Earlier today I posted SNR vs ISO curves for exposures yielding values two stops down from clipping. Yesterday, I posted SNR vs ISO curves for exposures yielding values five stops down from clipping. I decided to explore what happens seven stops down from clipping in the blue channel, a little brighter than that in the… [Read More]
Search Results for: m240 green shadows
Is the Leica M240 ISOless, part 2
Yesterday we saw that the Leica M240 is “ISO-less” five stops from full scale — moderate shadows in a normal outdoor scene. Today, I repeated yesterday’s testing, but two stops from full scale — the brighter parts of a normal outdoor scene, but short of the highlights. Actually, the blue channel is two stops from… [Read More]
In-camera black point subtraction
This is the 23rd post in a series of tests of the Fujifilm GFX 100, Mark II. You can find all the posts in this series by going to the Categories pane in the right hand panel and clicking on “GFX 100 II”. It’s also of more general use, so I’ve tagged it with “The… [Read More]
Leica Q2 Monochrom dark-field ISO series
This is the fifth post in a series about the Leica Q2 Monochrom. You can see all the other posts in the series by looking in the Category List drop-down menu on the right side of the page. You can learn a lot about a camera with the lenscap on. I made a series… [Read More]
Sony a7R noise floor
I am not completely happy with the preceding two posts. In order to do a better job of characterizing the vibration effects of the a7R’s shutter, I need to get further from the ‘scope, make the light path longer with mirrors (no smoke), or come up with a completely different way of making the measurement…. [Read More]