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Metabones EF to M43rds Speed booster ultra

UV Lens
3 replies to this topic

#1 dabateman

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Posted 20 October 2018 - 05:27

I had made an attempt to test the Metabones speed booster in the past. But that was with my Stock EM1.

This time I used the Pentax UAT 85mm f4.5 lens, set at f5.6 to test if there was an effect on the UV transmission with the Speed booster.

UAT only using 390bp25 filter:
F5.6, Iso 200, 2 seconds for good exposure.

UAT plus speed booster lens set at F5.6, ISO 200 the same exposure was 1.3 seconds. So slight improvement.

UAT only using 370bp15 filter:
F5.6, ISO 200, 4 seconds.

UAT plus speed booster lens set at f5.6, the same exposure was at 4 seconds. So no gain in light, but there was a gain in field of view, and loss in depth of field.

UAT only using 340bp10 filter:
F5.6, ISO 800, 20 seconds for good exposure.

UAT plus speed booster lens set at f5.6. The image was black, No UV through. So this is the limit.

#2 Andy Perrin

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Posted 20 October 2018 - 06:05

No images?

#3 dabateman

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Posted 20 October 2018 - 17:02

Sorry Andy, I ran out of space and trying to figure out how to resize my old 405nm light shots that I uploaded full size.


#4 Andrea B.

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Posted 20 October 2018 - 17:57

Dabateman has been moved to the Members+ group, so now has increased upload space. Any member can be moved to Members+ as the need arises.
Andrea G. Blum
Often found hanging out with flowers & bees.