Chris Malcolm <> writes:
> In rec.photo.digital RichA <> wrote:
>> On Apr 19, 12:38*pm, Alfred Molon <alfred_mo...@yahoo.com> wrote:
>>> So do we all need 24MP and never knew?
>>> --
>
>> Doesn't hurt, especially for the person who can only afford a D3200-
>> class camera. They won't need quite as much expensive telephoto since
>> they'll be able to produce higher-resolution crops.
>> The funny thing is that this sensor will probably destroy Sony's in
>> their A77 and A65 DSLRs ($1500/$1100 each, resp) which are horribly,
>> horribly noisy.
>
> At high ISOs. Why is everyone so obsessed with high ISO noise?
Wouldn't care to speak for everybody.
I spent last weekend shooting at ISO 3200 and 6400, usually around 1/200
sec, at f/2.8 to f/4. Would have been nice to have a solid 1/250 and a
solid f/5.6 (partly because the action had depth, but also to cover
focus inaccuracy a bit more). But on balance, I don't feel the HI.1 and
up ISOs on my D700 are good enough to use except in severe necessity,
which this wasn't, quite. (Mostly I avoid 6400 also, but that may be
overly conservative; the difference is much more obvious pixel peeping
than looking at actual pictures.)
I'm going to spend a chunk of the weekend after that doing similar
shooting (though that arena is a bit better lit, at least).
Generally, I do a LOT of high ISO shooting. It's why I bought a D700 in
the first place.
> I was under the impression that sensor noise and image quality were a
> trade off. If you made a sensor to get the best possible low ISO
> quality it would be noisy at high ISOs. And if you made a sensor to
> give the least noisy high ISOs low ISO image quality would suffer.
>
> What's the low ISO image quality of this noisy sensor like?
I don't think that's mostly true, though we don't seem to have a lot of
actual sensor designers to give expert opinions available.
--
David Dyer-Bennet,
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