I’ve been busy the past few days learning how to use Imatest so that I could do some analysis of the sharpness of handheld photographs taken with the Sony a7 and a7R. I’ll write it up in a day or so, but here’s a little teaser:
Handholding
No, not that kind of handholding. The kind when it’s just you and your camera against the world. We don’t need no stinking tripods! Or do we?
Comparing Sony a7 and a7R sharpness, part 4
I should be better at accepting defeat. Knowing your personal failings is one thing. Overcoming them is another. So I tried one more time to tame the s7R shutter shock in portrait orientation. I ditched the Arca Swiss C1 entirely, and mounted the vertical post from a RRS pano setup directly on the tripod deck…. [Read More]
Comparing Sony a7 and a7R sharpness, part 4
Continuing in my portrait-orientation shutter vibration mitigation experiments, I removed the cable tie from the setup of the preceding post. There was no change to the test images. That was a relief. The cable tie made it difficult to focus the lens, and I didn’t think such an attachment would be a good field solution… [Read More]
Comparing Sony a7 and a7R sharpness, part 3
In an attempt to ameliorate the a7R portrait-orientation vibration blur in the preceding post, I made two modifications to my setup. I cinched the lens to the support with a cable tie (shown before the ends were cut): And I put a two-pound weight on the bottom of the camera: The result was an improvement… [Read More]
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