Nikon Z 24-200 f/4-6.3 compared to Canon RF 70-200 f/4

Started 8 months ago | Discussions thread
kenw
kenw Veteran Member • Posts: 6,926
Re: a little more on cross-system comparisons
3

jetstream wrote:

DxOmark is a whole different can of worms. There are a lot of people who think they are completely useless, and probably a similar number of people who think they are reliable.

DxO has a great team of experts, engineers, etc and some of their products are amazing (I'm a big fan of deep prime), guess which category I belong to?

Your faith is misplaced. Try this one:

https://www.dxomark.com/Lenses/Olympus/Olympus-MZUIKO-DIGITAL-ED-75mm-F18-mounted-on-Olympus-PEN-E-PL7__972

And compare to this:

https://www.dxomark.com/Lenses/Olympus/Olympus-MZUIKO-DIGITAL-ED-75mm-F18-mounted-on-Olympus-OM-D-E-M5__793

Same lens on two cameras using the same 16MP sensor.  And yet DXO gives a sharpness figure of merit of 13MP on one and 5MP on the other.

Their sensor tests are fairly useful if you understand what they are doing.

Their lens tests are a totally hot mess full of garbage-in, garbage-out data flung onto their website with reckless abandon.  Multiple people have pointed gross errors like this out to them on their forums with no response.

Best to ignore DxO lens tests if attempting to compare things.  Either their testing or their data presentation is completely broken and utterly unreliable for trying to compare even within systems.

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Ken W
See profile for equipment list

 kenw's gear list:kenw's gear list
Panasonic Lumix DMC-GM1 Nikon Z7 Panasonic Leica DG Summilux 15mm F1.7 ASPH Nikon Z 14-30mm F4 Nikon Z 24-200mm F4-6.3 VR +42 more
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