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General photography questions and answers: Discuss Airy Disks...Bit quiet here so I've been looking at some of my bookmarks. This Site was one I chanced upon. No ...
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Old 04-11-2005, 22:01   #1 (permalink)
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Airy Disks

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

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?
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Old 04-11-2005, 22:19   #2 (permalink)
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Couldn't choose so I did a partial backup of my bookmarks under favourites/photography/tutorials and uploaded it here
Help yerselves!
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Old 04-11-2005, 22:29   #3 (permalink)
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Too much information!

Appreciate the spirit in which it is given but I'd not get through that lot in a whole winter
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Old 04-11-2005, 23:24   #4 (permalink)
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some good stuff in ther bachs, thanks

might have a look through mine.
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Old 05-11-2005, 08:00   #5 (permalink)
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Quote:
Originally Posted by RobertP
Too much information!

Appreciate the spirit in which it is given but I'd not get through that lot in a whole winter
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
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Old 05-11-2005, 09:31   #6 (permalink)
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Great bookmarks guys.....I've bookmarked the bookmarks
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Old 05-11-2005, 09:33   #7 (permalink)
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Some really helpful links there folks, cheers

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Old 05-11-2005, 10:18   #8 (permalink)
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good stuff, should add some of those links to the links section later!
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