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07-27-2018, 05:20 PM   #16
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QuoteOriginally posted by jco Quote
are you saying you never used just the built in flash with k lenses at 1/180s?
I tried to use it as optical trigger for off camera flash set up in manual mode. (And was successful). It took some fiddling to reduce the exposure effect of the onboard flash and I was able to get it to work but I have adequate discretionary funds that i soon switched to radio triggers.

Having a flash shoot at 100% strength with only lens aperture control as a means to manage exposure is not my preferred option.

The fact you are capturing partially black and fully black frames between 1/40 and 1/180 would indicate a sync problem to me.

07-27-2018, 05:44 PM   #17
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QuoteOriginally posted by Adam Quote
For what it's worth, I just tested my K-50 with the M 50mm. The exposures were bright and consistent in M mode with the flash on, in both trailing curtain and regular sync, at 1/180s. F11 was needed for proper exposure for a subject about 3m away.

No reason why the K-5 wouldn't behave the same way, so I'm thinking sending it back may be the right call.
yeah, getting blank pictures on X setting is unacceptable. Ive triple checked all the settings and there simply must be some sort of defect.
07-27-2018, 11:44 PM   #18
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I think the technical term is busticated.

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