Audii-Dudii
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 Re: Cambo Actus Photographs | |
akpo.ca wrote:
The 135mm Apo-Sonnar and the 85/1.4 Milvus/Otus/Planar will cover 44x33mm medium formats at infinity as well as a tiny bit larger.
Indeed. Unfortunately, I'm much more of a wide-angle kind of photographer, so as much as I enjoy the image quality of these longer lenses, it's highly unlikely I will ever have much use for them given the type of photography I presently do.
Wides usually do not have large image circles, unless they are wide angle zooms or tilt-shift/pc lenses where they were originally designed with a larger IC to accommodate 35mm full-frame shift.
With regard to the collection of lenses I'm presently experimenting with, only the Pentax FA Limited 43mm/f1.8 has so far proved to have an image circle that's too small to be useful for my purposes. (FYI, it's good for only 6-7mm of rise / fall / shift movements along the 24mm side of the frame at f8 and focused at infinity and 3-4mm along the 36mm side, which simply isn't enough to meet my needs. The IQ is quite nice, however. Fortunately, this situation improves somewhat with the FA Limited 31mm/f1.9, as its image circle allows for 8-9mm of rise / fall / shift movement along the 24mm short and 5-6mm along the long side. This is sufficient for probably 95+% of my photos.)
I'm still determining the extent of the usable image circles projected by the other lenses, but so far, I've determined the Zeiss ZK 35mm/f2 is good for ~10mm of rise / fall / shift along the 24mm side and 7-8mm along the 36mm side, which is plenty for me. And the Zeiss ZK 25mm/f2.8 is good for just a teeny bit less than that.
The IQ for both lenses is very good to excellent, however. Here's a photo taken with the 25/f2.8 early yesterday morning:
And one taken the night before with the 35mm/f2:
In both cases, I've applied approx. 5mm of rear fall to crop the foregrounds and no vignetting compensation (in fact, I actually added a bit of vignetting during post-processing.) Although it's difficult to tell from these small .jpgs, the IQ is excellent with both photos.
It's too early to say for certain, but as it stands right now, I think my friend is more likely to be getting a check from me rather than getting either of these two lenses back.
Next up is the ZK 21/f2.8 and needless to say, I'm very much looking forward to this one!
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