SURVEY - Do FT / mFT users know the difference from "full frame"? Replies wanted!!

Started Apr 26, 2013 | Discussions thread
Shop cameras & lenses ▾
Kewee Regular Member • Posts: 104
Re: SURVEY - Do FT / mFT users know the difference from "full frame"? Replies wanted!!
2

Great Bustard wrote:

It's a shame that you can't understand that f/2.8 on mFT puts the same amount of light on the sensor as f/5.6 on FF for a given shutter speed, which, in turn, results in the same noise for equally efficient sensors.

I'm assuming you believe f/2.8 allows twice as much light to pass through the lens as f/5.6, if so your wrong, as are many others who calculate f-stops but multiplying by two. Aperture values are quite different. Each full f-stop either doubles or halves the light passing through a lens depending on whether your opening the aperture or stopping down. F/4 lets twice as much light through the lens than f5.6, f2.8 lets four times as much light through the lens as f5.6, it doesn't just double the light transmission as many appear to believe.

Post (hide subjects) Posted by
NRV
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow