Did I get a lemon 200-600?

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Anio New Member • Posts: 21
Did I get a lemon 200-600?
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Hi,

after the covid times finally got money to buy the 200-600 for my 24mpix. A7C.

Took some test photos and I don't know what to make of the result.

It seems that is decentered but perhaps its kind of normal for this lens, I don't know.

I dont know if I return it, what are the odds to get worse one ..

The issue is that at 600mm the whole right side of the image is softer than the left and the center.

Increasing the aperture from 6.3 to 8 doesn't have any positive effect on it..

The lens is sharpest in the center at 7.1 but 6.3 is very close.

I have tested it inside and outside.

Used this guide to check it

https://phillipreeve.net/blog/how-to-check-how-decentered-your-lens-is/

Basically these were the settings:

Tripod, Electronic shutter, 100ISO, 10sec shutter timer, Manual focus at the center

Haven't tested the rest of the focal lengths, because didn't have the time and 600mm is the most important for me.

These Jpegs are from Raws in Adobe Lightroom with sharpening and noise reduction set at 0 .

I have also APSC a6300 and can make some test shots on it as well, but today didnt have the time. I'm kind worried if I get in the future 61mpix A7RIV, how much worse it will look.

Test at home at perhaps 7-8 meters:

Left 100% crop:

Right: crop:

Full image

Brick wall at about 12-15 meters:

Antenna at 30+ meters:

Antenna at the center CROP:

Antenna at the center FULL IMAGE:

Antenna at the top left corner CROP:

Antenna at the top left corner FULL IMAGE:

Antenna at the top right corner CROP

Antenna at the top right corner FULL

All the raw files of 6.3, 7,1 and 8 aperture tests:

https://drive.google.com/drive/folders/1jhKDO5f9HeFNDypHmfSEfj5EsUQ5b7F7?usp=sharing

Sony a6300
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