Lens sharpness - is this sharp enough?

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lmow20
lmow20 New Member • Posts: 8
Lens sharpness - is this sharp enough?

Hi all,

I am having difficulty judging a lens of mine. Its the 400mm 5.6 from canon. Coupled with a 5D IV, this thing should be sharp as anything, but I'm disappointed with the results. Let me know if it truly is horrible, and what I might do about it...

I shot this on a good quality manfrotto tripod, 2 second timer release, ISO 100, f/8 on a windless day. Shutter speed shouldn't matter on a tripod but it was 1/160th. The object was about 10-12m away.

I'll try some quicker shots later but this is the middle east at lunch time - as much light as you'll ever see...

This is the export max quality from light room. I focussed on the top of the lamp spike.

Thanks all,

Lawrence (UK)

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Canon EF 400mm f/5.6L USM Canon EOS 5D Mark IV
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