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Softish RF 24-105, Any thoughts?

Started Mar 25, 2021 | Questions thread
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Peak freak Contributing Member • Posts: 938
Softish RF 24-105, Any thoughts?

So I bought a couple of RF 24-105 lenses, but have ended up returning both. They were slightly soft on the left side, most noticeable from 35-50mm. Probably 'within spec', but I expected / wanted better. (My EF 16-35/4 by comparison is beautifully sharp from side to side at 35mm, which is supposedly its weakest F/L)

Part of the problem is that the lenses are tack sharp in the center and right hand side, possibly exaggerating the LHS softness. Corners are pretty good.

Some examples and a weird observation: The f4 boarders were sharper than the f8 boarders. [Very obvious in PS but I think these screen grabs have undergone some sharpening / compression].

Screen grab at normal size, 35mm

100% crop. f8 on the left, f4 on the right, plane of focus. Check bunched rope and background concrete detail.

f8 on the left, f4 on the right. This is beyond the plane of focus, but background white posts showed 'double image' or ghosting (hard to see here).

[I am aware of RSA's but right side behaves as expected].

Any thoughts?

Simon.

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