In this post, I’ll present pairs of images made with the a7RII on both sides of the conversion gain transition, corrected in post as explained here. The base ISO is 12800. The difference in noise level is apparent.
Archives for August 13, 2015
Noise in Sony a7RII pushed bookcase images — base ISO 12800
In the previous post we looked at color shifts in pushed Sony a7RII images, with push amounts from nothing to +5 stops, which is all you can get with the Lightroom Exposure control. See that post for the details of the conditions under which the images were captured. Now, I’d like to present blowups to… [Read More]
Sony a7RII pushed bookcase images — ISO 12800 base
This is a continuation of the testing started here, but with a base ISO two stops higher. For review, here is the test protocol. I set the a7RII on a tripod with the Zony 35/2.8 FE lens attached, determined that a not-very-aggressively-ETTR’d exposure at ISO 12800 was f/8 at 1/125 second. Varying nothing but the… [Read More]
Sony a7RII conversion gain visual changes
In this post, I’ll present pairs of images made with the a7RII on both sides of the conversion gain transition, corrected in post as explained here. The conversion gain change seems to take place with no material color shifts. Looking closer: We can see that the ISO 500 image is noisier.
Noise in Sony a7RII pushed bookcase images
In the previous post we looked at color shifts in pushed Sony a7RII images, with push amounts from nothing to +5 stops, which is all you can get with the Lightroom Exposure control. See that post for the details of the conditions under which the images were captured. Now, I’d like to present blowups to… [Read More]