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Old 24-01-2013, 11:25 AM
Wavytone
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Wavytone is offline
 
Join Date: Jul 2008
Location: Killara, Sydney
Posts: 4,147
Yes they are massive beasties. The MTO lens has a TWO-ELEMENT achromatic corrector (!) with about 4cm of solid glass up front. I expect yours does, too. Take a close look at the reflections you can see in the front corrector...

BTW is the corrector coated, or uncoated ? Mine was uncoated and after 4 surfaces was losing about 50% of the incoming light through reflections.
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