Forum: Pentax K-5 & K-5 II
06-13-2018, 11:10 AM
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I'm looking at the O-GPS1 as well, for astro-photography. Does anyone know if the Sigma DC 18-250mm 1:3.5-6.3 macro HSM lens would work at all for this? Also, I notice that on the K5 the astro-photo feature takes firmware revision 1.12 or better. Which revision of the firmware is needed for the K5-II?
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