ISO 100, OMD-EM1II and firmware 3.0?

Started 2 months ago | Questions thread
bobn2
bobn2 Forum Pro • Posts: 61,760
Re: Calling your bluff

katastrofa wrote:

Ok, so what if we applied multiplication to the digital signal instead of gain to the analog one? That wouldn't add any noise.

It depends on how well you do the multiplication. A big problem with digital processing is rounding errors, which whilst not strictly noise can look a lot like it. Image processing tools which work in extended floating point representation do produce better results than those that work in integers. Older digital cameras had 16-bit image processing pipelines, and really could add 'noise' due to rounding errors. Camera processors are often taken from mobile phone technology, and these chips often have GPUs in them which allow fast FP arithmetic, so it can be expected (if the programmers use them) that they'll produce essentially noise free processing.

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263, look deader.

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