In praise of AA filters

Started 9 months ago | Discussions thread
rovingtim
Veteran MemberPosts: 7,979
Like?
ready to see your artifacts?
In reply to Basalite, 9 months ago

So, here we go:

1) purple tree phenomenon

Leaf-less trees are not this colour ... as you can see from the leaf-less trees in the foreground of your own image.

The following is a similar problem showing up in a camera with a 'weak' AA compared with a good one. Same lens, same time, same photographer.

http://www.dpreview.com/forums/post/38582026

Notice how the beach has turned 'purple' in the E5 shots (the one with the weak AA)

2) False detail

Notice how the detail on the roof suddenly changes as the angle changes. This is detail being invented out of whole cloth. There are lots of examples of this in your image.

3) Jaggies

Again, a single example of many.

If you want more fun ... see if you can spot the roof that's changed colour. See if you can find more 'invented' detail can could not possibly be right.

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