Are bigger pixels less noisy?

Started 4 months ago | Discussions thread
57even Forum Pro • Posts: 15,505
Re: Are bigger pixels less noisy?

Futax wrote:

Aren't specialised "low-light" cameras lower in pixel-count because fewer pixels implies lower read noise from the electronics?

Most have low pixel counts to improve readout speed as they are typically used for sport and or video. Less need to drop to 12-bits and cause quantisation issues.

I think a larger signal per-pixel also makes it easier to perform noise filtering at high ISO (ie the 'extended' range) where the signal from smaller pixels would be closer to or even below the noise floor and therefore not recoverable.

I don't think that - at moderately high ISO - pixel size makes a significant difference. Or rather, the design of the pixel makes a bigger difference than the size. Read noise is quite unpredictable and doesn't correlate all that well with sensor size.

However, 3D stacked CMOS kind of cures the readout speed issue, if not the other problems.

-- hide signature --

"A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away." Antoine de Saint-Exupery

 57even's gear list:57even's gear list
Fujifilm X-Pro2
Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow