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Solar spectrum lens test - Canon 50mm f1.8 ii on SpeedBooster

4 replies to this topic

#1 Dmitry

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Posted 16 April 2019 - 18:24

Gear used:
Olympus e-m5 body full spectrum converted myself.
Canon 50mm f1.8 ii - cheap lens with plastic EF mount.
Viltrox EF-M2 ii (updated revision 5 elements in 4 groups)

Note: spectra not aligned!

iso 200 f1.3 1/200s no filters
Attached Image: P4169270.jpg

iso 200 f8 1/10s ZWB3 2mm
Attached Image: P4169274.jpg

iso 200 f8 1s ZWB2 2mm
Attached Image: P4169277.jpg

iso 200 f8 32s ZWB1 2mm
Attached Image: P4169278.jpg

#2 Dmitry

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Posted 16 April 2019 - 18:27

According to marks here I can guess 370-380nm reach on this combo.

Edited by Dmitry, 16 April 2019 - 18:28.


#3 Andrea B.

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Posted 16 April 2019 - 21:34

Just proves that we should try every lens. Never know what you're going to find! :D
Andrea G. Blum
Often found hanging out with flowers & bees.

#4 Dmitry

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Posted 16 April 2019 - 21:48

Once I receive m42-canon adapter, I'll check SpeedBooster with t-43 :blink:

#5 JMC

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Posted 17 April 2019 - 14:51

I've found my EOS 40mm pancake lens to be perfectly usable for UV. I must go and try the 50mm f1.8 now and see how they compare.