Jim,
As far as I'm aware, only the L-series of Canon EF lenses are made with fluorite which I believe is an ED-type glass.
I use my EF 50mm F/1.4 (non-L-series) lens for most of my widefield images. There is a lot of chromatic aberration when the lens is wide open; I mainly image at F/2.5 and there is a little aberration, especially around the edges. Gary imaged at F/2.8 (with the same lens) which I believe would have helped in lowering the aberration.
In general, the L-series lenses (those with the red stripe around the front of the barrel) are two or three (and more) times the cost of the standard EF series of lenses.
Regards,
Humayun
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Originally Posted by FOOTPRINT
Hi All,
Wonder if anyone knows if the Canon EOS300D and 350D Lenses are made from ED glass, I ask because pictures taken of the Milky-Way by myself and the recent ones posted by- garyh- seem to have quite good colour resolution, (colours in focus) which normal glass camera lenses dont, when used for astrophotography, ED camera lenses cost a heap (looked on E-Bay at prices), Ill post one of my pictures also as an example, appreciate any imput here on the subject.
cheers....Jim
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