rscheffler
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 p.4 #2 · TTartisan 75mm 1.5 Biotar copy | |
Edward Teller wrote:
That is all I have got, unlikely to do any more as it is probably enough or more than enough to see how they perform in most of the settings that people might use these for. My personal conclusions would be that:
1.The Biotar always needs a hood, and, if you have a lot of direct sun, or even indirect sun, it's not enough unless you just like veiling flare. The TT Artisan also benefits from a hood, significantly in drastic situations like the last comparison, and slightly in other situations.
2. The TT Artisan is in any case sharper, more resolving, contrastier, and more saturated than the copy of the Biotar used here, but the contrast and saturation differences diminish if the Biotar is kept away from backlit conditions. Neither lens is particularly sharp.
3. The TT Artisan bokeh is noticeably janglier and busier than the Biotar bokeh, and this can't be solely put down to contrast differences. I don't think. The Biotar backgrounds are more unfocused generally, but not always, as it does depend on distance differences between camera, central subject, and background. At least that is the way I see it.
I will probably keep both, because WTH, and those are my tendencies. The Biotar is capable of producing image pairs here, occasionally if there is no possibility of flare, that I prefer to the TT Artisan, though the TT Artisan is a "better lens". I'd get a CLA done on the Biotar if I could find someone who has done some, is good at it, and would agree to turn it around quickly enough I wouldn't die before I got it back, but don't know of anyone as the usual suspects seem unexcited about the prospect.
Thanks for watching to anyone interested enough to get this far, and apologies to those who were not, as I completely understand....Show more →
Thanks for these. Obviously the old and degraded coatings, plus whatever else is affecting the old Biotar provokes way more veiling flare, which in many of the images actually feels complementary. It seems to be similar to the effects many try to recreate with 'mist' filters.  The TTA images are almost jarring in direct comparison because they're so much cleaner, in relative terms. It almost feels too modern! 
Yeah, the swirly one of the chair does feel better with the old Biotar. I see lower central contrast, perhaps due to some inherent veiling flare, that tones down the more 'jangly' feeling seen in the clean TTA. That's the one image where I felt the swirl of the Biotar was palatable whereas the TTA's version was less so.
The f/8 shot of the aspens reveals glow in the Biotar but not in the TTA. So if you want/prefer the glow and lower contrast, all the time, then the Biotar would seem to be the choice. IMO it certainly has more of a 'vintage' feel than the TTA, which in 'contrast' (haha) delivers old school bokeh but with modern contrast and saturation.
Edited on Oct 07, 2024 at 03:45 PM · View previous versions
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