Yesterday’s experiments with the D810 dark-field noise, which showed that Nikon employs some low-pass filtering when long exposure noise reduction is turned on, made me wonder if there was any similar filtering at high ISO settings, a la the Sony a7S. I looked at one of the green channels of exposures made at ISO 64… [Read More]
Archives for August 2014
Nikon D810 noise reduction raw processing
Yesterday I reported on some of the processing the D810 does to raw files, apparently in an attempt to reduce noise. A few weeks ago, I published these curves which look at dark-field noise vs shutter speed with the in-camera long exposure noise reduction on and off. You will note that there is some processing… [Read More]
Nikon D810 long exposure noise reduction
There has been some discussion on the web about long-exposure noise reduction in the Nikon D810 that occurs even when the menu setting for such process is set to off. I have seen some indications of this kind of processing in my dark-field versus shutter speed tests. Now that I have a tool for analyzing… [Read More]
CCD vs CMOS: an end to the war?
“What war?” you say, “CMOS won that war a long time ago.” If the criterion is chips shipped, I agree. But CCDs have their fans in the photographic community, and they tend to be vocal. I’m from Missouri about the supposed color rendering advantages of CCD’s, and I really don’t like the poor dynamic range… [Read More]
Easy ETTR for Canon users
From the mailbag: Thanks for the blog series on ETTR and UniWB. I’m not sure, but I may have been among the earliest to describe the trivial way for UniWb with Canon: lens cap black or totally blown over-exposure. I was unable to easily find the date on your blog article. You may or may… [Read More]