K-1 II : other versions of the studio scene

Started May 13, 2018 | Discussions thread
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left eye
left eye Senior Member • Posts: 1,608
K-1 II : other versions of the studio scene
3

To keep this short, from what I can see the 50mm macro lens used might have a curved focal plane, or at least it seems to be only in exact focus on a small area of the test scene - the rest being out of focus.

Ok so there's the main studio scene using the 50mm that most people are looking at; there the left side looks out of focus, actually maybe the whole scene is a bit out!!

Switch to another instance of the studio scene :

1.

ISO-invariance test, choosing one of the high ISOs - which are causing all the fuss, here 3200 ISO,

https://www.dpreview.com/reviews/image-comparison/fullscreen?attr134_0=pentax_k1ii&attr134_1=pentax_k1&attr136_0=6&attr136_1=6&attr176_0=off&attr176_1=off&normalization=full&widget=611&x=-0.665286392099118&y=0.30224321133412047

...this is now the 24-70mm, and now the left side is sharp, meaning the K-1 II has more detail than the K-1, and that's at high ISOs. But then scroll over to the right side, it's terrible!!! - I mean really really bad.

There's no doubt there's some raw NR going on, but I don't think it's eating detail, that seems to be more of a hunger of the lenses. I wish they'd tried the 28-105mm (which is known to have a flatter and sharper plane of focus than the 24-70mm), or found a 77mm again.

2.

Exposure Latitude test, again good on the left,

https://www.dpreview.com/reviews/image-comparison/fullscreen?attr144_0=pentax_k1ii&attr144_1=pentax_k1&attr146_0=100_0&attr146_1=100_0&attr177_0=off&attr177_1=off&normalization=full&widget=608&x=-0.2217775709632388&y=-0.6001665972511452

again the K-1 II has sharper detail than the K-1.

 left eye's gear list:left eye's gear list
Olympus E-300 Pentax K-5 Fujifilm GFX 50S Panasonic GH5 +5 more
Pentax K-1
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