Teleconverter magnification comparison. (5 imgs)

Started Aug 25, 2013 | Photos thread
KentG Veteran Member • Posts: 4,705
Re: Klaus...Groups and Elements...

Seven reflections is not possible with any combination of 4-5 elements regardless of the number of groups (except with no coatings because then you will get reflections of reflections). The same number of groups will produce the same number of internal reflections regardless of the number of elements. Only the number of air-to-glass surfaces count in that. However depending on the coatings some IRs will be suppressed more than others.

Kent Gittings

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Pentax K-5 IIs Pentax K-S1 Pentax K-1 Pentax smc D-FA 50mm F2.8 Macro Pentax FA 150-450mm F4.5-5.6 +3 more
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