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ED Glass Comparisons, Roland Christen

ED Glass Comparisons

Revision title: ED Glass Comparisons

ED Glass Comparisons, Roland Christen

ED Glass Comparisons

Revision title: ED Glass Comparisons

Description

Comparing performance of FPL53  with FCD100 in a triplet lens
Lens size: 105 F7 Triplet Apochromat, optimized for visual and imaging

Ohara S-FPL53 SD glass paired with two matching Ohara crown glasses
Hoya FCD100 SD glass paired with two matching Hoya crown glasses

I have added another variation that optimizes the 105F7 FCD100 lens for imaging. The mating glass is slightly different and by letting the red end drop a bit in performance the blue-violet end can be brought up to a higher level of correction. Polychromatic RMS spot size is tighter over the spectrum and the energy is higher over a smaller area.

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  • ED Glass Comparisons, Roland Christen
    Original
  • ED Glass Comparisons, Roland Christen
    B
  • Final
    ED Glass Comparisons, Roland Christen
    C

B

Title: ED Glass Comparisons

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ED Glass Comparisons, Roland Christen