lifeandmylens wrote:
1st is 8x10! The Xenotar is maybe 75 years old and has a similar rendering.
one can tell because the oof discs are slightly larger on the 1st and since 150/2.8 would be equivalent to 300/5.6, the 300mm f4.5 should be the one with a bit more background blur.
But they're so similar I wouldn't be able to tell without the direct side-by-side comparison..
Isn't 8x10 more about the quality though? I would imagine you get significantly more resolution, though not sure with these very old lenses..
Would be interesting how a 35mm image shot on a 50mm f0.95 / f1.0 compares. DOF should be similar to the 150mm f2.8.
dourbalistar wrote:
Much appreciated, @Cloud75@! Yes, I'm the climber. The most painful part was running down in my climbing shoes so that I could position myself in a relatively static position before the self-timer went off.
To account for the filter factors, I take an incident meter reading and add +3 stops, +2 stops, and +2 stops for R/G/B, respectively. It's not exact since my FM2n only has full stop shutter speed increments, but close enough. Good luck and hope you can share some results!...Show more →
Awesome. Already ordered from filterfind.net, along with some more stuff I was after. They're great, an excellent rec from @madNbad
fjablo wrote:
one can tell because the oof discs are slightly larger on the 1st and since 150/2.8 would be equivalent to 300/5.6, the 300mm f4.5 should be the one with a bit more background blur.
But they're so similar I wouldn't be able to tell without the direct side-by-side comparison..
Isn't 8x10 more about the quality though? I would imagine you get significantly more resolution, though not sure with these very old lenses..
Would be interesting how a 35mm image shot on a 50mm f0.95 / f1.0 compares. DOF should be similar to the 150mm f2.8.
Yes, the extra compression of the longer lens on 8x10 is the primary difference in this particular comparison. It also shows that stopping down the lens on both at least a little is good. Neither are very sharp wide open. The Heliar for example, I often shoot at f/5.6 for the wide open look but with some added sharpness. The Zeiss 135 f/3.5 however, is sharp wide open.
