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Optics Theory - This forum is aimed towards the TECHNICAL side of photographic OPTICS THEORY. There will be some overlap by camera/manufacturer, but this forum is for the heavy duty tech discussions. This is NOT the place to discuss a specific lens or lens line, do that in the appropriate forum. This is the forum to discuss optics or lenses in general, to learn about the tech behind the lenses and images. IF you have a question about a specific lens, post it in the forum about that type of camera, NOT HERE.

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Old 04-16-2011   #41
Bob Michaels
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Any other fans of the Zeiss Biogon 21/2.8 for Contax G?
Yes, this is the lens that makes it worthwhile to buy a body just so you can use this lens. I am keeping mine.

One of the few lenses that I have never read a negative comment about. In fact I have never heard anyone say they thought there was a better 21mm. As good, yes. Better, no.
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Old 04-16-2011   #42
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Check this out, 21mm fans. Apparently only 700 of these babies were made. Bjorn Rorslett praises it but likes the modern VC 21/4 for Nikon S mount better. Which I didn't know existed either....

http://cgi.ebay.com/Nikon-S-2-1cm-21...item4aaa58adab
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Old 04-16-2011   #43
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You could sell the Nikkor and spend the month in Rome taking pictures with the VC.... and whatever else you feel like bringing. The 50 and the 85....

Or you could sell the VC and buy a sweater.
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Old 04-17-2011   #44
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21mm Super Angulon f/3.4 "There is no substitute."
Both taken with the SA:





After that one, the ZM 21mm f/2.8 takes second place in my book but it's too big for my taste and isn't a SA. Great lens, but the SA takes the cake here IMO.

Phil Forrest
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Old 04-17-2011   #45
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I Agree with Phil ..a 21 SA is a Must have ...must Try at least once in your Life
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Old 04-17-2011   #46
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Very nice P, Helen - As always!
Ronny
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Old 04-17-2011   #47
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Roger -- wow. Those are stunning shots. You have controlled the shadows and highlights on an Ansel-Adams kind of level; really beautiful (of course I suppose the trick would be to print them that way but I know nothing, yet, of that art so cannot say). Is that developer you mention a divided developer like Acufine? What EI / ISO did you shoot the Tri-X at? How long in what formula did you develop? Obviously I'm hankering to try the same approach.
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Thanks.

Aculux is Paterson's standard fine grain developer. 13 minutes at 20 deg C. They are scanned negatives so obviously I've had to adjust the brightness and contrast because they're very grey straight off Vuescan (it doesn't understand that I metered from the mid-tones and *most* of the scene is actually supposed to be dark). In the old days I would print everything on grade 3 Record-Rapid and that's the look I'm trying to get.

To be honest, I'm not totally happy with the negatives. Kodak have reformulated Tri-X and it doesn't seem to achieve its full speed (I rated it at 400 ASA and used a hand meter). The negs are rather thin, although when you're taking pictures of largely black things in dark sheds, you expect fairly light negs. Grain is also excessive, although there is shadow detail if you look for it.

What Tri-X does achieve is remarkable sharpness despite the hevay grain; without any artificial sharpening, the scans are far crisper than from any digital camera. The grains obligingly seem to line up around the fine details.

Now I'll let you into a secret. The scans are very slightly "toned" as if they'd been dipped in selenium toner, by using the Colorize control in Photoshop (the one in Paint Shop Pro does exactly the same thing, so there's no need to spend lots of money on software). This gives them the warm look and the impression of deepened tonality. It's an optical illusion which I discovered a little while ago.

Last edited by rogerzilla : 04-17-2011 at 09:45.
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Old 04-17-2011   #48
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I do my vuescan set to RGB rather than b&w -- I should try doing it the right way to see if I get better scans -- but then I have lots of tones to play with. Generally everything has a yellow/red cast much as what a Selenium wash would add, only often too much so.

Anyway thanks for the info. Have you tried Neopan 400? I find it very beautiful these days.
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Old 04-17-2011   #49
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I have used the CV 21/4, but sold it because it just seemed "character-less".
Perhaps the best characteristic a lens can have.
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Old 04-18-2011   #50
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After that one [21mm Super Angulon f/3.4], the ZM 21mm f/2.8 takes second place in my book but it's too big for my taste and isn't a SA. Great lens, but the SA takes the cake here IMO.

Phil Forrest
Hmm - for 'character' and '50s charm' - maybe - but in technical respects, the Zeiss Biogon 21/2.8 ZM, and even the Zuiko 21mm f/2.0 (SLR lens) will eat if for breakfast - not so much resolution-wise, but contrast, modern coatings, light falloff, etc.

The Zuiko 21, while no match for the Biogon 21/2.8 whatsoever, is much smaller though (and it's an SLR ultrawide that's a stop faster - quite an engineering feat - length is 44mm, 21/2.8 Biogon is 75mm)

Anyway, I love the 21mm focal length!
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Old 04-18-2011   #51
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I was traveling light today with IIIf and CV Skopar 35/2.5 and shot a roll of Tri X but saw a dozen pictures that made me wish I had the 21mm with me. So light was I, I had not Gossen Digisix so I'm about to process the roll and we shall see how well we see, as it were. If they come out decently I'll post a couple of the pics that I wish were 21s.
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