The Center for Photographic Art has an annual juried exhibition. This year, it is a portfolio event. Not all the exhibited work was to be portfolios — that privilege was reserved for a favored few — but the judging was on the basis of submitted portfolios of eight images. I submitted the following images from… [Read More]

A few posts ago, I did a series of D810 dark-field exposures with different shutter speeds to make sure that one of my test methods, which involved varying exposure by varying shutter speed, wasn’t affecting the quality of the read noise. It wasn’t. Today I did a similar series at long shutter speeds to find… [Read More]

A couple of posts ago I reported getting rid of almost all the Nikon 810 low-frequency dark-field noise by averaging many (256) dark-field images and subtracting the average from individual images. I wondered if the same trick would work with the Sony alpha 7S. Sadly, the answer is no. Here’s the standard deviation of the… [Read More]

Thanks, everybody. I’ll even thank the ‘bots. Jim