Airy Disks

RobertP

RobertP

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Bit quiet here so I've been looking at some of my bookmarks.

This Site was one I chanced upon. No idea where I got it from - but anyway.... there is some fascinating stuff there.

Edit: think it may have been from a thread about monitor calibration here some time.

If I am reading this page right, images on the 20D will degrade above f11 due to diffraction. Airy disks sound like frisbees but define where this diffraction will come in and become visible.
Other sensor pixel densities will have the same problem but at different apertures.
So as your lens gets sharper with a smaller aperture your sensor starts to work against you because of diffraction :ponders:

Can't see it amounts to much in real world use of the camera... but it's interesting stuff.

Oh and there are some items about sensor noise for SammyC too.

Anyone else got a good bookmark to share for the long evenings?
 
Too much information!

Appreciate the spirit in which it is given but I'd not get through that lot in a whole winter :)
 
some good stuff in ther bachs, thanks :)

might have a look through mine.
 
RobertP said:
Too much information!

Appreciate the spirit in which it is given but I'd not get through that lot in a whole winter :)
Click to expand...

The spirit in which it was given was called Glenmorange.
If I had have been sober, I would have just posted a couple :icon_cool
 
Great bookmarks guys.....I've bookmarked the bookmarks :ponders: :thumb:
 
Some really helpful links there folks, cheers :thumb:
 
good stuff, should add some of those links to the links section later!
 
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