I need your help with choosing a new lens

[Eyal_bin]

Hi all,

I want to buy a 35mm film equivalent lens for my rd-1s. due to the crop factor it should be a 23mm lens but I cant seem to find one...

Do you know about a close enough lens?

 

[Ronchnam]

New lens

New lens

Have a look here :

http://www.cameraquest.com/voigtlen.htm

you have the choise between 21 or 25
You can also choose a lot more expensive Leica Elmarit 24/2.8 or Elmar 34/3.8
Btw I use a Minolta M Rokkor 28/2.8 that just fit the field of my 35mm Voigtlander external viewfinder

 

[sanmich]

21, 24, 25...

 

[pagpow]

Depends on how close you want to be.

Some people shoot the CV 21, but report vignetting that can either be ignored or countered in post-processing

Some shoot the cv 25, and find they can use the whole VF, thus avoiding the need for, and inconvenience of, an externalVF

I have the CV 21, but I have ended up really enjoying the CV 28 Skopar -- it is only 42mm equivalent -- you can decide if it is too long -- advantage -- there are framelines for it

I find I am enjoying the 40mm equivalence shooting that on the RD1 and the 40 Nokton on full frame -- avoids the need to choose between the 35 and the 50 equivalents.

 

[jke]

I think the advice on a 28mm lens is a good one, especially as a one-size-fits-all single lens kit. Ask anyone with a Canonet QL-17 GIII how they like the 40mm focal length.

 

[f16sunshine]

The 28mm FL is my next target.
I just let go my CV25 as I really wanted a RF coupled lens (mine was the excellent but uncoupled LTM version).
Having the frame lines is a plus.

 

[LCT]

24/25 are closer focal length but they don't behave like a 35 as far as DoF is concerned. AFAIC my 35 equivalent is the 28. Also there are 28mm frame lines in the R-D1 viewfinder. Which 28? Matter of tastes and wallet as usual. My all time favourite is the Summicron 28/2 but it is an expensive lens. The Elmarit 28/2.8 asph is smaller & cheaper but very sharp, in fact perhaps the sharpest 28 i've used so far. Beware that it is a very contrasty lens though. Also it's bokeh is (slightly) harsher than that or the Summicron. FWIW.

 

[Eyal_bin]

Thanks for your help and tips, but unfortunatlly I am now more confused...

24/25 are closer focal length but they don't behave like a 35 as far as DoF is concerned. AFAIC my 35 equivalent is the 28. Also there are 28mm frame lines in the R-D1 viewfinder. Which 28? Matter of tastes and wallet as usual. My all time favourite is the Summicron 28/2 but it is an expensive lens. The Elmarit 28/2.8 asph is smaller & cheaper but very sharp, in fact perhaps the sharpest 28 i've used so far. Beware that it is a very contrasty lens though. Also it's bokeh is (slightly) harsher than that or the Summicron. FWIW.

Where are the 28mm framelines on the R-D1?

 

[sebastel]

LCT refers not to the field of view, but to the way of how to use the lens.

and the 28mm framelines are in the finder.
on top of the camera, there is a little switch with positions for 28mm, 35mm and 50mm. switch it to 28mm and look through your finder.

i prefer the biogon 25mm, by the way.

 

[LCT]

...Where are the 28mm framelines on the R-D1?

Look for the frame selector lever on the top plate. Set it to 28 and you'll see the 28mm frame lines in the viewfinder. You might have to remove your spectacles if any though.😎

 

[phototektour]

...
on top of the camera, there is a little switch with positions for 28mm, 35mm and 50mm
...

That´s one of the reasons I like the Tri-Elmar very much for the R-D1

 

[Eyal_bin]

One thing I probably don't get, the framelines on the R-D1s are refering to FoV of 28mm, but, but when a 28mm lens is on the camera, due to the crop factor, the lens' FoV will be ~44, so actually the frame lines are not helping at all...

 

[phototektour]

One thing I probably don't get, the framelines on the R-D1s are refering to FoV of 28mm, but, but when a 28mm lens is on the camera, due to the crop factor, the lens' FoV will be ~44, so actually the frame lines are not helping at all...

No,
the framelines on the R-D1 are refering to the focal length of a lens.

Don´t think too much, otherwise it is confusing ... built in 28mm frameline for a 18,666mm lens :bang:

 

[LCT]

One thing I probably don't get, the framelines on the R-D1s are refering to FoV of 28mm, but, but when a 28mm lens is on the camera, due to the crop factor, the lens' FoV will be ~44, so actually the frame lines are not helping at all...

When you put a 28mm lens on the R-D1, its focal length doesn't change. It is still a 28mm lens the FoV of which is reduced due to the crop factor. This is indeed this reduced FoV that frame lines aim to delimitate but the numbers associated to them (28, 35, 50) represent the focal lengths of the lenses.

 

[phototektour]

When you put a 28mm lens on the R-D1, its focal length doesn't change. It is still a 28mm lens the FoV of which is reduced due to the crop factor. This is indeed this reduced FoV that frame lines aim to delimitate but the numbers associated to them (28, 35, 50) represent the focal lengths of the lenses.

That´s what I said (and don´t think in terms of a 35mm-camera)

 

[LCT]

That´s what I said (and don´t think in terms of a 35mm-camera)

Sorry i did not understand your:

...built in 28mm frameline for a 18,666mm lens

What's this 18,666mm value?

 

[phototektour]

Everything is allright, just a silly joke, see at the banging smiley

 

[Catto]

Just in case you're still confused - the people designing the R-D1 knew about the crop factor when building the camera; so, when you put a 28mm lens on, the '28' framelines are showing you what the sensor covers - NOT the full width of the lens on a full-frame camera. Same for 35 & 50 - so don't try to correct for the crop factor, that's already been done in the camera design...
R

 

[Eyal_bin]

Just in case you're still confused - the people designing the R-D1 knew about the crop factor when building the camera; so, when you put a 28mm lens on, the '28' framelines are showing you what the sensor covers - NOT the full width of the lens on a full-frame camera. Same for 35 & 50 - so don't try to correct for the crop factor, that's already been done in the camera design...
R

Are you sure? I am not sure if I read it somewhere or just my instinct, but I think that the 28mm frameline refers to what is eventually equals 28mm after the crop, e.g - a 18.6mm lens X ~1.5 camera crop factor = 28mm FoV seen thrue camera's RF.

I just want to clarify that what is written here is NOT a fact but just my assumption.

It would be great if someone will be able to clarify this issue for me (and I'm sure for several more) for once and for all.

Thanks guys for all your help 🙂

 

[Catto]

Are you sure? It would be great if someone will be able to clarify this issue for me (and I'm sure for several more) for once and for all.

Well, I've only been using mine for ~1year or so, but...

When I put a 28mm f/2 Ultron on, what the lines show matches what the sensor captures. Same for the 50mm Summicron & 50mm lines, and the 40mm Summicron-C - that's quite close to the 35mm viewfinder lines. When I use the 15mm Super Heliar, I add an external (21mm) finder as the view from that lens is far too wide for the 28mm lines.

Conclusive enough? If you were designing a camera like this, knowing the lenses for it would be from full-frame 35mm film bodies, wouldn't you mark the finder lines with their actual lengths?
R!