fredmiranda.com
Login

  

  Previous versions of RustyBug's message #11974995 « A7/A7r - performance with WA RF lenses »

  

RustyBug
Offline
Upload & Sell: On
Re: A7/A7r - performance with WA RF lenses


+1 @ banding on the color push with WB variance neutral set to the wrong light/color.

I think the thing to conclude from the A7 vs. A7R images you presented is that there might be a color response variance between the two cameras that warrants more testing to discern the differences ... particularly at the blue channel. (reference Edward\'s point @ sensor design of color shift vs. smearing variance/balance). After all, the projected image should be the same from the same lens barring any real changes in lighting temp.

Even in the not-pushed images, the sky colors are different, the amount of blue in the \"blown neutral\" area is different (which imo is clearly wrong @ warm light on a warm building) and the same exists across the street. I\'d want to shoot them against some standardized neutrals with standardized light before I\'d make any meaningful assessments at how the two sensors respond .. and/or correct/adjust WB and/or channel response.

Imo, this has served to raise a significant question ... but does not serve to provide a good answer yet.



Dec 02, 2013 at 10:12 PM
RustyBug
Offline
Upload & Sell: On
Re: A7/A7r - performance with WA RF lenses


+1 @ banding on the color push with WB variance neutral set to the wrong light/color.

I think the thing to conclude from the A7 vs. A7R is that there might be a color response variance between the two cameras that warrants more testing to discern the differences ... particularly at the blue channel. (reference Edward\'s point @ sensor design of color shift vs. smearing variance/balance)

Even in the not-pushed images, the sky colors are different, the amount of blue in the \"blown neutral\" area is different (which imo is clearly wrong @ warm light on a warm building) and the same exists across the street. I\'d want to shoot them against some standardized neutrals with standardized light before I\'d make any meaningful assessments at how the two sensors respond .. and/or correct/adjust WB and/or channel response.

Imo, this has served to raise a significant question ... but does not serve to provide a good answer yet.



Dec 02, 2013 at 10:10 PM
RustyBug
Offline
Upload & Sell: On
Re: A7/A7r - performance with WA RF lenses


+1 @ banding on the color push with WB variance neutral set to the wrong light/color.

I think the thing to conclude from the A7 vs. A7R is that there might be a color response variance between the two camera that warrants more testing to discern the differences ... particularly at the blue channel.

Even in the not-pushed images, the sky colors are different, the amount of blue in the \"blown neutral\" area is different (which imo is clearly wrong @ warm light on a warm building) and the same exists across the street. I\'d want to shoot them against some standardized neutrals with standardized light before I\'d make any assessments at how the two sensors respond .. and/or correct/adjust.

Imo, this has served to raise a significant question ... but does not serve to provide a good answer yet.



Dec 02, 2013 at 10:06 PM
RustyBug
Offline
Upload & Sell: On
Re: A7/A7r - performance with WA RF lenses


+1 @ banding on the color push with WB variance neutral set to the wrong light/color.


Dec 02, 2013 at 09:59 PM





  Previous versions of RustyBug's message #11974995 « A7/A7r - performance with WA RF lenses »