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Hi all
I just bought this lens in a beautiful shape, everything working alright:
COSINA 70-210mm f/4.5-5.6 PK Mount Camera Lens - RB M29 | eBay
The problem is I can't make is work with my K5. Although I rotate the aperture ring, measuring the light with the green button doesn't stop down the lens. Nothing happens and the lens is always full open.
- I have other manual lenses an they all work properly with the K5 (Pentax M 50mm, Tokina 300mm 5.6, Vivitar 75-260mm just to name a few)
- The Cosina works great with my film cameras (P30, K1000)
Anyone have any ideas?
Thanks, Sev.