I went from a 5D3 to an A7r. The 5D3 had a specific problem of banding in the deep shadows at iso's up to 400 which the sony sensors did not suffer from. There is of course the resolution advantage. Trying to meaningfully compare noise between two different sensor resolutions requires a level of expertise which I do not have to the extent of making qualified statements about. I'm sure there are those here who can weigh in on this matter with more authority.
I would suggest however that unless looking at these two specific cameras, both of which have been superseded by newer technology from either manufacturer, a more useful test would be of the current models from each at a more comparable resolution. The 5Dsr vs the A7r4 is a test relevant to myself currently for example as we look at systems to invest in for a new repro studio requiring high resolution output. This is further complicated by rumours of a new 45 megapixel Canon mirrorless camera which will have the latest sensor technology rather than the rather dated sensor in the 5Dsr and may be a fairer comparison when it is released, at least to the A7r3.
Feb 10, 2020 at 08:14 AM
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