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Rangefinder for TLR
Rangefinder for TLR
i heard people use rangefinder to help focusing a TLR. i have a
Rolleiflex TLR and want to know what is a rangefinder and whether it
helps. is there any introduction on the net for these kind of
rangefinders?
thanks.
i heard people use rangefinder to help focusing a TLR. i have a
Rolleiflex TLR and want to know what is a rangefinder and whether it
helps. is there any introduction on the net for these kind of
rangefinders?
thanks.
Re: Rangefinder for TLR
In article <1181751163.914333.279130@z28g2000prd.googlegroups,com >,
Steven Woody <narkewoody@gmail,com > wrote:
> i heard people use rangefinder to help focusing a TLR. i have a
> Rolleiflex TLR and want to know what is a rangefinder and whether it
> helps. is there any introduction on the net for these kind of
> rangefinders?
>
> thanks.
There were rangefinder devices that Rollei offered for the 2.8 and the 3.5 called the Rolleimeter. These fit into the sports finder on the waist level hood and allowed
one to focus by a rangefinder rather then by through the ground glass under very dim lighting
conditions. Its advantage over the GG focusing was that it was brighter.
On some versions of the Rollei TLR cameras there is an additional mirror
on the back of the sports finder which allows eyelevel focusing with the waist level hood.
The vast majority of users simply use the ground glass focusing or, if
your TLR has it, the rangefinder spot on the GG to focus.
The add on rangefinder and the rangefinders built-in to cameras like a Leica RF use two windows, a beam splitter and a prism. These show you two
images of the subject. As you focus the lens one image moves closer or
further away from the other. When they are aligned you are in focus.
There are two types of rangefinders:
coincident moves one image over the other. When you see one image of the
subject you are in focus.
Split image shows a top half and a bottom half of the subject. When the
two halves are aligned you are in focus.
It may be easier to visualize the two types this way.
With a coincident RF you see two lines. You focus the lens until they
merge into one line.
With a split image you see one line that is broken into two parts. You
focus the lens until you have a single line that is not broken.
Some better coincident RF systems had one window that was colored,
usually a yellow or green. So you would see two images. One colored and
one not. As you focused they would become one image and you are in focus.
--
To reply no_ HPMarketing Corp.
In article <1181751163.914333.279130@z28g2000prd.googlegroups,com >,
Steven Woody <narkewoody@gmail,com > wrote:
> i heard people use rangefinder to help focusing a TLR. i have a
> Rolleiflex TLR and want to know what is a rangefinder and whether it
> helps. is there any introduction on the net for these kind of
> rangefinders?
>
> thanks.
There were rangefinder devices that Rollei offered for the 2.8 and the 3.5 called the Rolleimeter. These fit into the sports finder on the waist level hood and allowed
one to focus by a rangefinder rather then by through the ground glass under very dim lighting
conditions. Its advantage over the GG focusing was that it was brighter.
On some versions of the Rollei TLR cameras there is an additional mirror
on the back of the sports finder which allows eyelevel focusing with the waist level hood.
The vast majority of users simply use the ground glass focusing or, if
your TLR has it, the rangefinder spot on the GG to focus.
The add on rangefinder and the rangefinders built-in to cameras like a Leica RF use two windows, a beam splitter and a prism. These show you two
images of the subject. As you focus the lens one image moves closer or
further away from the other. When they are aligned you are in focus.
There are two types of rangefinders:
coincident moves one image over the other. When you see one image of the
subject you are in focus.
Split image shows a top half and a bottom half of the subject. When the
two halves are aligned you are in focus.
It may be easier to visualize the two types this way.
With a coincident RF you see two lines. You focus the lens until they
merge into one line.
With a split image you see one line that is broken into two parts. You
focus the lens until you have a single line that is not broken.
Some better coincident RF systems had one window that was colored,
usually a yellow or green. So you would see two images. One colored and
one not. As you focused they would become one image and you are in focus.
--
To reply no_ HPMarketing Corp.
Re: Rangefinder for TLR
On Jun 14, 2:49 am, Bob Salomon <bob_salo...@mindspring,com > wrote:
> In article <1181751163.914333.279...@z28g2000prd.googlegroups,com >,
> Steven Woody <narkewo...@gmail,com > wrote:
>
> > i heard people use rangefinder to help focusing a TLR. i have a
> > Rolleiflex TLR and want to know what is a rangefinder and whether it
> > helps. is there any introduction on the net for these kind of
> > rangefinders?
>
> > thanks.
>
> There were rangefinder devices that Rollei offered for the 2.8 and the 3.5 called the Rolleimeter. These fit into the sports finder on the waist level hood and allowed
> one to focus by a rangefinder rather then by through the ground glass under very dim lighting
> conditions. Its advantage over the GG focusing was that it was brighter.
>
> On some versions of the Rollei TLR cameras there is an additional mirror
> on the back of the sports finder which allows eyelevel focusing with the waist level hood.
>
> The vast majority of users simply use the ground glass focusing or, if
> your TLR has it, the rangefinder spot on the GG to focus.
>
> The add on rangefinder and the rangefinders built-in to cameras like a Leica RF use two windows, a beam splitter and a prism. These show you two
> images of the subject. As you focus the lens one image moves closer or
> further away from the other. When they are aligned you are in focus.
>
> There are two types of rangefinders:
>
> coincident moves one image over the other. When you see one image of the
> subject you are in focus.
>
> Split image shows a top half and a bottom half of the subject. When the
> two halves are aligned you are in focus.
>
> It may be easier to visualize the two types this way.
>
> With a coincident RF you see two lines. You focus the lens until they
> merge into one line.
>
> With a split image you see one line that is broken into two parts. You
> focus the lens until you have a single line that is not broken.
>
> Some better coincident RF systems had one window that was colored,
> usually a yellow or green. So you would see two images. One colored and
> one not. As you focused they would become one image and you are in focus.
>
> --
> To reply no_ HPMarketing Corp.
thank you for sharing such enrich information.
On Jun 14, 2:49 am, Bob Salomon <bob_salo...@mindspring,com > wrote:
> In article <1181751163.914333.279...@z28g2000prd.googlegroups,com >,
> Steven Woody <narkewo...@gmail,com > wrote:
>
> > i heard people use rangefinder to help focusing a TLR. i have a
> > Rolleiflex TLR and want to know what is a rangefinder and whether it
> > helps. is there any introduction on the net for these kind of
> > rangefinders?
>
> > thanks.
>
> There were rangefinder devices that Rollei offered for the 2.8 and the 3.5 called the Rolleimeter. These fit into the sports finder on the waist level hood and allowed
> one to focus by a rangefinder rather then by through the ground glass under very dim lighting
> conditions. Its advantage over the GG focusing was that it was brighter.
>
> On some versions of the Rollei TLR cameras there is an additional mirror
> on the back of the sports finder which allows eyelevel focusing with the waist level hood.
>
> The vast majority of users simply use the ground glass focusing or, if
> your TLR has it, the rangefinder spot on the GG to focus.
>
> The add on rangefinder and the rangefinders built-in to cameras like a Leica RF use two windows, a beam splitter and a prism. These show you two
> images of the subject. As you focus the lens one image moves closer or
> further away from the other. When they are aligned you are in focus.
>
> There are two types of rangefinders:
>
> coincident moves one image over the other. When you see one image of the
> subject you are in focus.
>
> Split image shows a top half and a bottom half of the subject. When the
> two halves are aligned you are in focus.
>
> It may be easier to visualize the two types this way.
>
> With a coincident RF you see two lines. You focus the lens until they
> merge into one line.
>
> With a split image you see one line that is broken into two parts. You
> focus the lens until you have a single line that is not broken.
>
> Some better coincident RF systems had one window that was colored,
> usually a yellow or green. So you would see two images. One colored and
> one not. As you focused they would become one image and you are in focus.
>
> --
> To reply no_ HPMarketing Corp.
thank you for sharing such enrich information.
Re: Rangefinder for TLR
In article <1181751163.914333.279130@z28g2000prd.googlegroups,com >,
Steven Woody <narkewoody@gmail,com > wrote:
> i heard people use rangefinder to help focusing a TLR.
Steven-
Bob's answer is probably what you're looking for, but here is another
approach.
The "poor man's beam splitter" consists of something like a pencil, a
finger or a popsicle stick held close in front of the lens. You should
notice ghost images of an object behind the stick, that will merge when
in focus. You may need to try different width sticks to get it to work
with a particular system.
This approach also works when focusing a projector lens.
Fred
In article <1181751163.914333.279130@z28g2000prd.googlegroups,com >,
Steven Woody <narkewoody@gmail,com > wrote:
> i heard people use rangefinder to help focusing a TLR.
Steven-
Bob's answer is probably what you're looking for, but here is another
approach.
The "poor man's beam splitter" consists of something like a pencil, a
finger or a popsicle stick held close in front of the lens. You should
notice ghost images of an object behind the stick, that will merge when
in focus. You may need to try different width sticks to get it to work
with a particular system.
This approach also works when focusing a projector lens.
Fred
Re: Rangefinder for TLR
Steven Woody wrote:
> i heard people use rangefinder to help focusing a TLR. i have a
> Rolleiflex TLR and want to know what is a rangefinder and whether it
> helps. is there any introduction on the net for these kind of
> rangefinders?
In addition to the devices mentioned by Mr. Salomon there is such a
thing as a ground glass with a rangefinder in the center. The split
image rangefinder part was two optical wedges like those in numerous
35mm cameras. It was small and was really only useful when viewing
with the magnifier and when there was something in the subject with a
good edge as the rangefinder offset the edge; when in focus, the
offset parts were once again congruent. AFAIK it was an after market
item; i.e., never made or provided by Rollei.
--
dadiOH
____________________________
dadiOH's dandies v3.06...
...a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http :// mysite.verizon,net /xico
Steven Woody wrote:
> i heard people use rangefinder to help focusing a TLR. i have a
> Rolleiflex TLR and want to know what is a rangefinder and whether it
> helps. is there any introduction on the net for these kind of
> rangefinders?
In addition to the devices mentioned by Mr. Salomon there is such a
thing as a ground glass with a rangefinder in the center. The split
image rangefinder part was two optical wedges like those in numerous
35mm cameras. It was small and was really only useful when viewing
with the magnifier and when there was something in the subject with a
good edge as the rangefinder offset the edge; when in focus, the
offset parts were once again congruent. AFAIK it was an after market
item; i.e., never made or provided by Rollei.
--
dadiOH
____________________________
dadiOH's dandies v3.06...
...a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http :// mysite.verizon,net /xico
Re: Rangefinder for TLR
dadiOH wrote:
> Steven Woody wrote:
>> i heard people use rangefinder to help focusing a TLR. i have a
>> Rolleiflex TLR and want to know what is a rangefinder and whether
>> it helps. is there any introduction on the net for these kind of
>> rangefinders?
>
> In addition to the devices mentioned by Mr. Salomon there is such a
> thing as a ground glass with a rangefinder in the center. The split
> image rangefinder part was two optical wedges like those in numerous
> 35mm cameras. It was small and was really only useful when viewing
> with the magnifier and when there was something in the subject with
> a good edge as the rangefinder offset the edge; when in focus, the
> offset parts were once again congruent. AFAIK it was an after
> market item; i.e., never made or provided by Rollei.
Like this one...
http :// www .adorama,com /RLSSI.html
And come to think of it, there was also a microprism "rangefinder"
ground glass. They were nice, may have been made by Rollei as well as
3rd party.
--
dadiOH
____________________________
dadiOH's dandies v3.06...
...a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http :// mysite.verizon,net /xico
dadiOH wrote:
> Steven Woody wrote:
>> i heard people use rangefinder to help focusing a TLR. i have a
>> Rolleiflex TLR and want to know what is a rangefinder and whether
>> it helps. is there any introduction on the net for these kind of
>> rangefinders?
>
> In addition to the devices mentioned by Mr. Salomon there is such a
> thing as a ground glass with a rangefinder in the center. The split
> image rangefinder part was two optical wedges like those in numerous
> 35mm cameras. It was small and was really only useful when viewing
> with the magnifier and when there was something in the subject with
> a good edge as the rangefinder offset the edge; when in focus, the
> offset parts were once again congruent. AFAIK it was an after
> market item; i.e., never made or provided by Rollei.
Like this one...
http :// www .adorama,com /RLSSI.html
And come to think of it, there was also a microprism "rangefinder"
ground glass. They were nice, may have been made by Rollei as well as
3rd party.
--
dadiOH
____________________________
dadiOH's dandies v3.06...
...a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http :// mysite.verizon,net /xico
Re: Rangefinder for TLR
dadiOH wrote:
> dadiOH wrote:
>> Steven Woody wrote:
>>> i heard people use rangefinder to help focusing a TLR. i have a
>>> Rolleiflex TLR and want to know what is a rangefinder and whether
>>> it helps. is there any introduction on the net for these kind of
>>> rangefinders?
>>
>> In addition to the devices mentioned by Mr. Salomon there is such a
>> thing as a ground glass with a rangefinder in the center. The
>> split image rangefinder part was two optical wedges like those in
>> numerous 35mm cameras. It was small and was really only useful
>> when viewing with the magnifier and when there was something in
>> the subject with a good edge as the rangefinder offset the edge;
>> when in focus, the offset parts were once again congruent. AFAIK
>> it was an after market item; i.e., never made or provided by
>> Rollei.
>
> Like this one...
> http :// www .adorama,com /RLSSI.html
>
> And come to think of it, there was also a microprism "rangefinder"
> ground glass. They were nice, may have been made by Rollei as well
> as 3rd party.
I'll get it right yet...
You used to be able to get ground glasses with EITHER split image OR
microprism rangefinders. There was also one that had both like the
one I linked.
--
dadiOH
____________________________
dadiOH's dandies v3.06...
...a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http :// mysite.verizon,net /xico
dadiOH wrote:
> dadiOH wrote:
>> Steven Woody wrote:
>>> i heard people use rangefinder to help focusing a TLR. i have a
>>> Rolleiflex TLR and want to know what is a rangefinder and whether
>>> it helps. is there any introduction on the net for these kind of
>>> rangefinders?
>>
>> In addition to the devices mentioned by Mr. Salomon there is such a
>> thing as a ground glass with a rangefinder in the center. The
>> split image rangefinder part was two optical wedges like those in
>> numerous 35mm cameras. It was small and was really only useful
>> when viewing with the magnifier and when there was something in
>> the subject with a good edge as the rangefinder offset the edge;
>> when in focus, the offset parts were once again congruent. AFAIK
>> it was an after market item; i.e., never made or provided by
>> Rollei.
>
> Like this one...
> http :// www .adorama,com /RLSSI.html
>
> And come to think of it, there was also a microprism "rangefinder"
> ground glass. They were nice, may have been made by Rollei as well
> as 3rd party.
I'll get it right yet...
You used to be able to get ground glasses with EITHER split image OR
microprism rangefinders. There was also one that had both like the
one I linked.
--
dadiOH
____________________________
dadiOH's dandies v3.06...
...a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http :// mysite.verizon,net /xico
Re: Rangefinder for TLR
On Jun 14, 4:58 am, "dadiOH" <dad...@guesswhere,com > wrote:
> dadiOH wrote:
> > Steven Woody wrote:
> >> i heard people use rangefinder to help focusing a TLR. i have a
> >> Rolleiflex TLR and want to know what is a rangefinder and whether
> >> it helps. is there any introduction on the net for these kind of
> >> rangefinders?
>
> > In addition to the devices mentioned by Mr. Salomon there is such a
> > thing as a ground glass with a rangefinder in the center. The split
> > image rangefinder part was two optical wedges like those in numerous
> > 35mm cameras. It was small and was really only useful when viewing
> > with the magnifier and when there was something in the subject with
> > a good edge as the rangefinder offset the edge; when in focus, the
> > offset parts were once again congruent. AFAIK it was an after
> > market item; i.e., never made or provided by Rollei.
>
> Like this one... http :// www .adorama,com /RLSSI.html
>
> And come to think of it, there was also a microprism "rangefinder"
> ground glass. They were nice, may have been made by Rollei as well as
> 3rd party.
>
> --
>
> dadiOH
> ____________________________
>
> dadiOH's dandies v3.06...
> ...a help file of info about MP3s, recording from
> LP/cassette and tips & tricks on this and that.
> Get it at http :// mysite.verizon,net /xico
thank you for the link, i think that is what i want. but, the price
is too high! i hope i can find used one in ebay. and, many these
screens selled are for 3.5F or 2.8F, mine is 2.8E, not sure there is
one for it.
On Jun 14, 4:58 am, "dadiOH" <dad...@guesswhere,com > wrote:
> dadiOH wrote:
> > Steven Woody wrote:
> >> i heard people use rangefinder to help focusing a TLR. i have a
> >> Rolleiflex TLR and want to know what is a rangefinder and whether
> >> it helps. is there any introduction on the net for these kind of
> >> rangefinders?
>
> > In addition to the devices mentioned by Mr. Salomon there is such a
> > thing as a ground glass with a rangefinder in the center. The split
> > image rangefinder part was two optical wedges like those in numerous
> > 35mm cameras. It was small and was really only useful when viewing
> > with the magnifier and when there was something in the subject with
> > a good edge as the rangefinder offset the edge; when in focus, the
> > offset parts were once again congruent. AFAIK it was an after
> > market item; i.e., never made or provided by Rollei.
>
> Like this one... http :// www .adorama,com /RLSSI.html
>
> And come to think of it, there was also a microprism "rangefinder"
> ground glass. They were nice, may have been made by Rollei as well as
> 3rd party.
>
> --
>
> dadiOH
> ____________________________
>
> dadiOH's dandies v3.06...
> ...a help file of info about MP3s, recording from
> LP/cassette and tips & tricks on this and that.
> Get it at http :// mysite.verizon,net /xico
thank you for the link, i think that is what i want. but, the price
is too high! i hope i can find used one in ebay. and, many these
screens selled are for 3.5F or 2.8F, mine is 2.8E, not sure there is
one for it.
Re: Rangefinder for TLR
In article <1181827853.609855.5720@o11g2000prd.googlegroups,com >,
Steven Woody <narkewoody@gmail,com > wrote:
> On Jun 14, 4:58 am, "dadiOH" <dad...@guesswhere,com > wrote:
> > dadiOH wrote:
> > > Steven Woody wrote:
> > >> i heard people use rangefinder to help focusing a TLR. i have a
> > >> Rolleiflex TLR and want to know what is a rangefinder and whether
> > >> it helps. is there any introduction on the net for these kind of
> > >> rangefinders?
> >
> > > In addition to the devices mentioned by Mr. Salomon there is such a
> > > thing as a ground glass with a rangefinder in the center. The split
> > > image rangefinder part was two optical wedges like those in numerous
> > > 35mm cameras. It was small and was really only useful when viewing
> > > with the magnifier and when there was something in the subject with
> > > a good edge as the rangefinder offset the edge; when in focus, the
> > > offset parts were once again congruent. AFAIK it was an after
> > > market item; i.e., never made or provided by Rollei.
> >
> > Like this one... http :// www .adorama,com /RLSSI.html
> >
> > And come to think of it, there was also a microprism "rangefinder"
> > ground glass. They were nice, may have been made by Rollei as well as
> > 3rd party.
> >
> > --
> >
> > dadiOH
> > ____________________________
> >
> > dadiOH's dandies v3.06...
> > ...a help file of info about MP3s, recording from
> > LP/cassette and tips & tricks on this and that.
> > Get it at http :// mysite.verizon,net /xico
>
> thank you for the link, i think that is what i want. but, the price
> is too high! i hope i can find used one in ebay. and, many these
> screens selled are for 3.5F or 2.8F, mine is 2.8E, not sure there is
> one for it.
If you have an E with the removable focusing hood that comes off by
pushing two rectangular buttons on either side of the body then you can
use screens from the F series and change them yourself. You can not use
the GX or SL66 or SLX/6000 screens.
If your camera does not have the removable hood then any good camera
repair person can change your screen but you can't.
--
To reply no_ HPMarketing Corp.
In article <1181827853.609855.5720@o11g2000prd.googlegroups,com >,
Steven Woody <narkewoody@gmail,com > wrote:
> On Jun 14, 4:58 am, "dadiOH" <dad...@guesswhere,com > wrote:
> > dadiOH wrote:
> > > Steven Woody wrote:
> > >> i heard people use rangefinder to help focusing a TLR. i have a
> > >> Rolleiflex TLR and want to know what is a rangefinder and whether
> > >> it helps. is there any introduction on the net for these kind of
> > >> rangefinders?
> >
> > > In addition to the devices mentioned by Mr. Salomon there is such a
> > > thing as a ground glass with a rangefinder in the center. The split
> > > image rangefinder part was two optical wedges like those in numerous
> > > 35mm cameras. It was small and was really only useful when viewing
> > > with the magnifier and when there was something in the subject with
> > > a good edge as the rangefinder offset the edge; when in focus, the
> > > offset parts were once again congruent. AFAIK it was an after
> > > market item; i.e., never made or provided by Rollei.
> >
> > Like this one... http :// www .adorama,com /RLSSI.html
> >
> > And come to think of it, there was also a microprism "rangefinder"
> > ground glass. They were nice, may have been made by Rollei as well as
> > 3rd party.
> >
> > --
> >
> > dadiOH
> > ____________________________
> >
> > dadiOH's dandies v3.06...
> > ...a help file of info about MP3s, recording from
> > LP/cassette and tips & tricks on this and that.
> > Get it at http :// mysite.verizon,net /xico
>
> thank you for the link, i think that is what i want. but, the price
> is too high! i hope i can find used one in ebay. and, many these
> screens selled are for 3.5F or 2.8F, mine is 2.8E, not sure there is
> one for it.
If you have an E with the removable focusing hood that comes off by
pushing two rectangular buttons on either side of the body then you can
use screens from the F series and change them yourself. You can not use
the GX or SL66 or SLX/6000 screens.
If your camera does not have the removable hood then any good camera
repair person can change your screen but you can't.
--
To reply no_ HPMarketing Corp.
Re: Rangefinder for TLR
In article <UPYbi.7199$pd5.5927@trnddc02>,
"dadiOH" <dadiOH@guesswhere,com > wrote:
> Steven Woody wrote:
> > i heard people use rangefinder to help focusing a TLR. i have a
> > Rolleiflex TLR and want to know what is a rangefinder and whether it
> > helps. is there any introduction on the net for these kind of
> > rangefinders?
>
> In addition to the devices mentioned by Mr. Salomon there is such a
> thing as a ground glass with a rangefinder in the center. The split
> image rangefinder part was two optical wedges like those in numerous
> 35mm cameras. It was small and was really only useful when viewing
> with the magnifier and when there was something in the subject with a
> good edge as the rangefinder offset the edge; when in focus, the
> offset parts were once again congruent. AFAIK it was an after market
> item; i.e., never made or provided by Rollei.
>
>
> --
>
> dadiOH
> ____________________________
>
> dadiOH's dandies v3.06...
> ...a help file of info about MP3s, recording from
> LP/cassette and tips & tricks on this and that.
> Get it at http :// mysite.verizon,net /xico
Rollei offers a groundglass with a split image rangefinder as well. Or
at least they did.
--
To reply no_ HPMarketing Corp.
In article <UPYbi.7199$pd5.5927@trnddc02>,
"dadiOH" <dadiOH@guesswhere,com > wrote:
> Steven Woody wrote:
> > i heard people use rangefinder to help focusing a TLR. i have a
> > Rolleiflex TLR and want to know what is a rangefinder and whether it
> > helps. is there any introduction on the net for these kind of
> > rangefinders?
>
> In addition to the devices mentioned by Mr. Salomon there is such a
> thing as a ground glass with a rangefinder in the center. The split
> image rangefinder part was two optical wedges like those in numerous
> 35mm cameras. It was small and was really only useful when viewing
> with the magnifier and when there was something in the subject with a
> good edge as the rangefinder offset the edge; when in focus, the
> offset parts were once again congruent. AFAIK it was an after market
> item; i.e., never made or provided by Rollei.
>
>
> --
>
> dadiOH
> ____________________________
>
> dadiOH's dandies v3.06...
> ...a help file of info about MP3s, recording from
> LP/cassette and tips & tricks on this and that.
> Get it at http :// mysite.verizon,net /xico
Rollei offers a groundglass with a split image rangefinder as well. Or
at least they did.
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To reply no_ HPMarketing Corp.
