Large Format Landscapes

[vinny]

I've never seen a 4x5 camera who's bellows couldn't handle a 200mm lens, so I'm a little confused about your comment that you couldn't get focused with the Bellows.

Also, I don't know what you're talking about with exposure because this is perfect, whatever you thought you wanted this is much better, I'm just saying this is such a beautiful image, I suspect the brighter exposure would not have been as good.

he removed the rear elements, which changes the focal length.

[StoneNYC]

he removed the rear elements, which changes the focal length.

Oh! Somehow I missed that, DUH! Ok thanks, still think it's lovely.

[Jmarmck]

The image does look soft but it is not unpleasant.

[David Lobato]

Colorado CJ, you don't need a bellows exposure correction if you're focused at infinity. The bellows draw will be the same (or nearly the same) as the focal length of the front lens group you used. Nice view of Longs Peak, its North face, the Notch, parts of the Boulder Field, and Mt. Lady Washington. Good photo.

[JaZ99]

Colorado CJ, you don't need a bellows exposure correction if you're focused at infinity. The bellows draw will be the same (or nearly the same) as the focal length of the front lens group you used. Nice view of Longs Peak, its North face, the Notch, parts of the Boulder Field, and Mt. Lady Washington. Good photo.

But if you remove piece of glass does it change the effective aperture?

[Jiri Vasina]

Yes it does. On convertible lenses, there is the secondary inscription. On non-convertible, you can roughly approximate by measuring the aperture's diameter and divide the focal length by the diameter. From what I understand, real aperture size might differ from apparent aperture based on lens construction. I might be wrong here, though...

[David Lobato]

My first LF lens was a 210mm Rodenstock Sironar convertible. With one lens group it was very difficult to find the correct focus so I rarely used it that way. The lens did have dual aperture scales, the green numbers were for the converted setup and its focal length was over 400mm.

[Colorado CJ]

Thanks everyone.

I DID say it was an experiment . I guessed at F64 as the shutter is only marked to F45. The lens stops way past the F45 mark though. It may be F90 for all I know. I'll definitely be experimenting more with this as I can see its usefulness as a somewhat soft focus telephoto lens.

[Colorado CJ]

Here's one more of the experimental shots using just the front element of the Ektar 203mm F7.7 lens. These negatives were EXTREMELY thin. I had to do a lot of work to try to get anything out of them.


Zone VI, Kodak Ektar 203mm F7.7 lens, Foma 200, Pyrocat MC

203mm-Experiment-2 by Colorado CJ, on Flickr

[Jmarmck]

Fantastic!