A reader asked me to run some tests to see how much the a7 suffered from shutter shock with and without the electronic first curtain shutter. I was intrigued. I decided to start with what should be a pretty easy test, so I used a 55mm lens. Since I haven’t tested the a7R with this… [Read More]
Search Results for: a7R shutter shock
Back to the firehouse
After an extensive technical detour that will be familiar to regular readers, yesterday I started back on the Firehouse pictures. I took three cameras, the a7 (for handholding) the a7R, the D800E, and four lenses, the Zony 55 (on the a7), the Zeiss 135mm Apo Sonnar, the Zeiss 55mm Apo Distagon, and the Coastal Optics… [Read More]
Leica 50 ‘lux on the M240, Sony 55 FE on the Sony a7
I’d had really good luck with the Zony 55 (official name: Carl Zeiss 55mm f/1.8 Sonnar FE) on the a7R, and I expected superlative results on the less-demanding a7. Just to make things interesting, I compared the combination to the Leica 50mm f/1.4 Summilux-M ASPH on the M240. In some ways, it’s a fair comparison:… [Read More]
Testing the Sony a7, part 1
Well, it’s not really part 1, since I did some shutter shock testing earlier. But now I know that the camera’s vibration is no problem, I’ll give it my regular testing regime. [Added later: If you’re interested in the a7 noise floor in single shot mode, look here. If you care that the a7 becomes… [Read More]
Is exposure important for ISO 12233 testing?
When I listed all the things that could affect the ISO 12233 sharpness testing here, I didn’t list exposure. Not because I was sure that it didn’t, but because I just didn’t know. I figured that it probably would, since exposure affects resolution in the computer-mediated testing regimes. Long-term readers of this blog are no… [Read More]