Sensor sizes and f stops

Started 11 months ago | Discussions thread
OpticsEngineer
Senior MemberPosts: 2,879Gear list
Like?
Re: Sensor sizes and f stops
In reply to starlight110, 11 months ago

"the only reason why I´m considering a digicam instead of a camcorder is the sensor size"

Since you largely interested in video, along with light sensitivity, there is something unpleasant you need to know.

Almost all digicams, when taking video, only use every other row of pixels of the chip (maybe even less).   This is done to maintain the high rate of data readout from the chip that is needed.  So the light sensitivity is a lot less than one would expect just looking at the sensor size.

I have read that only the very newest Sony 1" chips use the full active area of the chip for video.

My experience with my camcorders in low light with those tiny chips is that they do just as well or better than my somewhat larger chipped digicams for video.   It was confusing to me until I learned the reason.

 OpticsEngineer's gear list:OpticsEngineer's gear list
Fujifilm XF1 Olympus XZ-2 iHS Panasonic Lumix DMC-LF1 Sony Alpha NEX-7 Sony SLT-A65 +17 more
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow