| Joined: | Wed Apr 18th, 2012 |
| Location: | United Kingdom |
| Posts: | 4186 |
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I dont know anyone who has a D5 but I think we need to consider that the D5 (21MP), as is the D500, while the D850 (45MP) and D800 (36MP) have many more photosites (pixels). The extra pixels in the D850 and D800 are probably detrimental to their low ability to yield low noise images as the extra photosites are competing for the same amount of light so the S/N ratio is much worse.
So if I understand your reasoning correctly, you are saying that the no. of pixels AS WELL AS the actual pixel dimension (recognising they are linked) both have a contribution to noise generation.
... I cant remember where I saw it but I read a technical paper on the S/N output from various cameras and its conclusions were essentially if we want better low noise images then we need less pixels but if you want better resolution we need to get a modern high pixel count camera but need extra light (bright conditions).
This is one of the reasons I have multiple cameras - right tool for the job.
Wherever you read it, it strikes a chord with me. When you are juggling external lighting and location constraints you need a camera that will generate the least noise in the conditions you will be working....but deliver the detail your subject and use for the image demands.
It will be interesting to see if Z6 images are better for general use (ie lower noise in dull conditions) than the Z7. It may be that the definition of 45mp is rarely needed, or the lighting where it's going to be used is typically in sufficient to keep iso down.
So different bodies for different lighting conditions may be more appropriate?
Last edited on Mon Feb 4th, 2019 08:39 by Eric
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Eric