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Would like to know the following
- What does the coating on the elements of the lens do to the image?
- How will the image suffer if some of the coating of the elements are gone or eaten up?
- How do you check a 2nd-hand lens that the coatings are still there?
- How much coating on each elements are there on a typical lens?
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:dunno:
:dunno:
Originally posted by Bean
Would like to know the following
- What does the coating on the elements of the lens do to the image?
> better light transmission, and less internal reflection.
- How will the image suffer if some of the coating of the elements are gone or eaten up?
> uneven light transmission, might not be able to notice though.
- How do you check a 2nd-hand lens that the coatings are still there?
> Look at the surface...about 130 degree to your eyes...and you should see good even colour on the glass surface.
- How much coating on each elements are there on a typical lens?
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> different company apply differently.
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