I think I have very-late-onset dyslexia. I reported yesterday on handholding tests with the Nikon 58mm f/1.4. The graphs were actually of the second set of tests I attempted. When I did the first ones, this was the result: Very strange, I thought. The electronic flash resolution was much lower than I thought it would… [Read More]
Testing handholding
In the fall of 1958, when I was a photographer for my high school newspaper, I borrowed a Linotype font chart from the newspaper office, taped it to the darkroom wall, lit it with two blue-dipped photofloods, metered it with a Weston Master II, and made a bunch of handheld exposures at various shutter speeds… [Read More]
Handholding the a7 and a7R, part 3
I’ve been asked to compare a7R handheld sharpness to that of the Nikon D800E. Here goes, although this is adding one more imponderable to the mix. In the previous testing, the lens was the same for the images made with both cameras. Not just the same model, the very same lens. Since handheld testing requires… [Read More]
Handholding the a7 and a7R, part 2
The cameras: the Sony a7 and a7R. The lens: the Sony/Zeiss (aka Zony) 55mm f/1.8 Sonnar FE. The lighting: a single Fotodiox LED-200WA-56 daylight balanced variable-power flood. ISO set to 400, f-stop set to 5.6, focusing in single shot AF mode with the small focus area setting, drive set to single, the exposure mode set… [Read More]
Handholding the a7 and a7R, part 1
You may have noticed that I haven’t posted much for the last week or so. I’ve spent the time trying to come up with a way to measure the absolute and relative image sharpness of a7 and a7R when not firmly mounted to a tripod. I had been resisting this exercise in the past because… [Read More]
- « Previous Page
- 1
- …
- 263
- 264
- 265
- 266
- 267
- …
- 380
- Next Page »