| Joined: | Wed Apr 4th, 2012 |
| Location: | St Louis, Missouri USA |
| Posts: | 106 |
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| View single post by Dave Groen | ||||||||||
| Posted: Fri Jun 1st, 2012 12:36 |
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Dave Groen
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I heard that it's more about the reflectivity of the coating used on the rear element of certain lenses. Specific coatings reflect IR light better than others. Coatings that reflect it very well are more efficient at creating hotspots.
____________________ I started out with nothing and still have most of it left |
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