Sharpness: 5Ds vs. 5Ds R -- with amazing glass?

Started 2 months ago | Questions thread
icor1031
OP icor1031 Regular Member • Posts: 292
Re: 5Dsr for the win... provided have a plan for any moire (also available on 5Ds)

MitchAlsup wrote:

icor1031 wrote:

MitchAlsup wrote:

icor1031 wrote:

What's going on with this?

The sensor can ONLY capture the image presented by the lens. If the lens fails to produce dots as small as the pixels on the sensor, the the sensor simply captures the slight blur produced by the lens. That is, this is not a limitation of the sensor (especially when the lens is wide open) but a limitation of the optics in the lens and their ability to put up an image on the sensor with detail at the limit of the pixels on the sensor.

... I know that. But this is an 85mm Otus, and DXOMARK lists it as capturing almost twice as much data.

Are you suggesting that lens rental shot the image very stopped, perhaps at f/11 or such?

https://www.dxomark.com/Lenses/Compare/Side-by-side/Zeiss-Carl-Zeiss-Apo-Planar-T-Star-Otus-85mm-F14-ZE-Canon-on-Canon-EOS-5DS-R-versus-Zeiss-Carl-Zeiss-Distagon-T-STAR-Otus-55mm-F14-ZE-Canon-on-Canon-EOS-5DS-R__1383_1009_1241_1009

No, not al all.

twice as much data as what?

If you could find an MTF graph of the Otus maybe I could point out where the discrepancy lies.

... Twice as much data as the 6D or 5D Mk III sensors are even capable of capturing. They can capture about 20MP, but supposedly the Otus paired with a 5Ds R can capture 40MP or more.

 icor1031's gear list:icor1031's gear list
Canon EOS 5DS Carl Zeiss Apo Sonnar T* 2/135 Sigma 50mm F1.4 DG HSM | A Zeiss Otus 85mm F1.4 Sigma 85mm F1.4 Art +2 more
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