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ISO on the R5

Started 10 months ago | Discussions thread
Quarkcharmed
Quarkcharmed Senior Member • Posts: 2,713
Re: ISO on the R5
1

bclaff wrote:

MarshallG wrote:

Disclaimer: I’m only the messenger.

I’m at a trade show all weekly so I stopped in the Canon booth and spent a long time talking with one of their experts about the R5.

He then me that the R5 sensor slightly boosts voltage as you increase ISO,

Not slight but in proportion to the ISO setting.

and it did so in one stop increments.

True of many Canon bodies including the R5

Intermediate ISO changes are made post sensor read,

True of many Canon bodies including the R5

How do we establish that? I don't see it in rawdigger. With the interim ISO values (e.g. 125, 160, 320, 500 etc.) there are no regular gaps in the histogram.

4ex:

There are strange regular 'dips' though but they present at any ISO setting including 100, 200, 400

Anyway digital amplification should have produced much more frequent regular gaps with bins at zero.

 Quarkcharmed's gear list:Quarkcharmed's gear list
Canon EOS R5 Canon EF 70-200mm F2.8L IS II USM Canon EF 24-70mm F2.8L II USM Canon EF 16-35mm F4L IS USM Canon EF 50mm F1.8 STM
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