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Old 28-12-2015, 08:12 AM
Kunama
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Kunama is offline
 
Join Date: Sep 2012
Posts: 3,588
Quote:
Originally Posted by Profiler View Post
A side by side comparison will be pretty meaningless as both are beautiful pieces of optics but the 20mm aperture differences throws everything out the window.

What is however very interesting is the colour/contrast variations in the lens which are presumably attributable to where the glass is being made and who is coating it. A number of folks o'seas have commented on the green hue on some Taks and now the new FCs are returning to the original clear/transparent coatings.
I, for one, would like to see a side by side of these two scopes both being 900mm focal length, the TSA with its perfect colour correction would make a great scope to compare the performance of the FC100DL. Yes, the extra aperture will give an edge to the TSA overall but I would not consider the comparison meaningless.

"In the blue corner, the incredibly well corrected 120mm F7.5 Super Apochromat versus in the red corner, the 100mm F9 Fluorite Doublet .......... let's rumble !!!!"

The referee for the match, also from Japan, the beautiful Tak FC76DCsv on EM10 USD-3

The green hue of the coatings is only visible looking into the objective from the outside, these is no visible hue in the TSA120 when viewing with it. The light coffee colour of the FC100DL is an interesting change, given that the FC76 has deeper green coatings.
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