Re: Zeiss 35mm f1.4 ZM or Voigtlander 35mm f1.7 Ultron for Landscape with deep DOF for A7rM and A7rII
hiepphotog wrote:
I would not be surprised if the Cron 28\'s corners are sharper on film than on the M9/240.
I agree though I don\'t think we really know. There is also copy variation in the 28 cron. hiepphotog wrote:
Rich, vignetting and color cast should be similar. I believe there is a slight Cyan cast on the A7R with the WATE.
Here I would think the color cast will be less. I just base this on my own A7.mod, where colorcast is less, to my impression. It\'s too bad Ron did not have a ZM 35/1.4 to test pre-mod.
And interesting side note to this: the ZM35/2 shifts color on the M240, which in body lens correction will not remove (this from Edward\'s shots and some other examples). It\'s subtle, but it\'s there (my belief), yet on the M9 the same lens needs no correction at all, and does not cast color.
In the same vein, it took me some time to figure out that the ZM18/4 can be freed of colorcast in body on the M9 if set as 21/2.8 pre-asph. That\'s the only one that really kills it
Another interesting thing is the MTFs from Lloyd (TY tariq ) which are so striking in comparison. The question of measurement comes up as the thick cover says: 2.5mm. Presumably this is meant to represent the Sony A7 coverglass, yet Kolari measures this as 1.9mm. So, either 1) it\'s not the Sony per say, but arbitrary, or 2) it\'s the \"optical thickness\" of the 1.9mm stack, or 3) it\'s a physical measurement which adds a lower cover: one which is not replaced in the mod.
hiepphotog wrote:
both the A7s and A7RII are better at handling vignetting and color cast (the first reason for that 6-bit coding) than any M digital. I guess it\'s time for Leica to adopt BSI 42MP .
Well we know this is \"collateral improvement\", since the BSI was adopted soley for video reasons and so was the 42mp.
For general still photography ISO performance is more valuable, so I would love to see a 24ishmp BSI with great ISO than just another bone to the pixel counters
Re: Zeiss 35mm f1.4 ZM or Voigtlander 35mm f1.7 Ultron for Landscape with deep DOF for A7rM and A7rII
hiepphotog wrote:
I would not be surprised if the Cron 28\'s corners are sharper on film than on the M9/240.
I agree though I don\'t think we really know. There is also copy variation in the 28 cron. hiepphotog wrote:
Rich, vignetting and color cast should be similar. I believe there is a slight Cyan cast on the A7R with the WATE.
Here I would think the color cast will be less. I just base this on my own A7.mod, where colorcast is less, to my impression. It\'s too bad Ron did not have a ZM 35/1.4 to test pre-mod.
And interesting side note to this: the ZM35/2 shifts color on the M240, which in body lens correction will not remove (this from Edward\'s shots and some other examples). It\'s subtle, but it\'s there (my belief), yet on the M9 the same lens needs no correction at all, and does not cast color.
In the same vein, it took me some time to figure out that the ZM18/4 can be freed of colorcast in body on the M9 if set as 21/2.8 pre-asph. That\'s the only one that really kills it
Another interesting thing is the MTFs from Lloyd (TY tariq ) which are so striking in comparison. The question of measurement comes up as the thick cover says: 2.5mm. Presumably this is meant to represent the Sony A7 coverglass, yet Kolari measures this as 1.9mm. So, either 1) it\'s not the Sony per say, but arbitrary, or 2) it\'s the \"optical thickness\" of the 1.9mm stack, or 3) it\'s a physical measurement which adds a lower cover: one which is not replaced in the mod.
Nov 17, 2015 at 02:01 PM
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