Help judging performance of my FE55z, FE35f2.8z horizon/infinity

Started Jul 5, 2016 | Questions thread
OP slstr Senior Member • Posts: 1,029
Re: Help judging performance of my FE55z, FE35f2.8z horizon/infinity

holin wrote:

I'm interested in cheap testing methods, too, so, I looked. Based on 1600 pix wide jpegs it's difficult to say anything. They look fine and if this is the format you'd always publish your stuff then there is little to complain. I'd use RAWs, unsharpened (not unsharp mask'ed ) exported to JPEGs if necessary. However, I would also like to ask, why do you want to test your lenses. Do you see something in your photos that prompts you to suspect there's something wrong?

As for the testing method, I'd test with a brick wall, carefully aligned, or try to find slightly flatter infinity subject - so that almost everything is far away in the photo. Now you only have very thin corner to corner line of detail (buildings) from which to judge sharpness. Trees won't do, especially when it's windy.

Thanks for checking, I tried brick wall test also but results were difficult to "imagine"/translate into more "normal" pictures

Also did a defocused led-light shot wide open to check for de-cenering, but the result was a nice round circle so not difficult to interpret that result.

I'll post a dropbox link o the raw files below lilke Jim suggested.

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