Thats very poor on canons behalf .as i said live zebras finely tuned are un beatable for perfect "exposure evaluation" raw digger is not an exposure evaluation tool. in fact its useless in the field.
May 4, 2023
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You realize the meaning of the word "perfect", right?
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A1 a74 a7r5 use the latest processors. not sure about the a7s3
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i always remember sitting for a 4 hour celestial navigation exam and walking out in 90 mins. the next week i got my results 99% the teacher said i got 100% but no one is perfect.
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Does it matter ? that would be like saying an analogue multimeter is better than a digital because its measuring the raw voltage.
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Once one enters the quantum world - our concept of continuum is no longer completely accurate. Both photons and electrons are particles and while exposure in lux-seconds can be viewed as the energy of the incident wave - its statistics are a quantized version of that in that the number of photons incident. Such processes are described statistically as a Poisson process which describes the arrival of objects, be in cars at an intersection, rain in a rain gauge or photons on a photodetector. en.wikipedia.org/wiki/Shot_noise
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Yes. the correct equations are:
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How imperfect is the method you are using?
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after last nights testing, its as close as it gets. at least fast raw viewer is getting used for these conversations. its been a valuable tool so far.
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Sorry I don't understand your answer.
We can continue when you will decide to post raw files, exposed by zebras and overexposed relative to zebras, under various lights, regular scenes as well as red flowers and blue flowers, a flower filling the frame. -
Sorry I don't understand your answer.
sorry its as close to perfect as posable.
id like to post a utube of the lcd . but sorry it has my full name attached and not prepared to disclose for obvious reasons. i would like to but certain members have ruined the trust.
i havnt a tripod with me so cant even take a snapshot with my phone of the rear lcd capturing the zebras. you will have to wait till im home from my camping trip. -
Don't even bring this up.
You obviously misread the situation.
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All ISO invariant ranges start somewhere.
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Any camera having a range of ISOs across which it is invariant...is invariant.
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Invariance it's always defined within some domain under certain transformations, so it was a moot point to start with. It's fine to define invariance of noise when ISO setting changes within a specified range.
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This explains what Sony have done to resolve the raw file histogram issue. this is not a replacement for Jims excellent article. but explains a few un-answered questions about Sonys latest camera inclusions.
