Digital noise

[myshkin]

<p>I am pretty much at loss with studio lighting. Whenever I attempt low-key pictures I end up having digital noise (that's what I believe it is) in the pics. Please have a look at these samples. I would expect that overexposed parts would appear blown out and underexposed parts black. However, when I look at the histogram my problem zones are neither over-nor underexposed. I encircled the problem zones in red.<br />Your advice is greatly appreciated.</p><div></div>

[Matt Laur]

<p>Too hard to see what's going on in a down-sampled, lossily-compressed JPG. Can you post a 100% crop out of the problem area?</p>

[myshkin]

<p>Try this one, please...</p><div></div>

[myshkin]

<p>Weird, it"s ot visible on the internet. Cn I send it to your private mail?</p>

[eric merrill]

<p>It is visible in prints?</p>

[jaydesi]

<p>The link points to a different photo, but I don't see any noise in that link.</p>

[johnw63]

<p>The first photo is ISO 100 at 1/200th of a second. There should be about ZERO sensor noise with that choice. Any "noise" you see is probably due to stuff that has happened to the shot AFTER you took it.</p>

<p> </p>

[lex_jenkins]

<p>There's no noise in those samples. Check your monitor calibration.</p>

[scott_ferris]

<p>It is very easy to induce noise at 100iso in studio environments, you are doing it perfectly. What you are not doing is exposing for your sensors dynamic range.</p>

<p>What you need to do is shoot RAW and expose to the right, even if you want a dark picture it can't look dark on your camera LCD and the histogram can't bunch up to the left. Once you have this over exposed (in the sense that you want a dark picture) image, lower the exposure to where your vision is in post, this guarantees zero noise in even the darkest shadows.</p>

<p>Canon's, and I assume it is a Canon, are very bad at underexposure and dark tonality, but very good at over exposure, over expose and lower in post.</p>