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Forum: Pentax SLR Lens Discussion 07-03-2010, 08:02 AM  
Promaster spectrum 7 2x auto TC
Posted By UTAphotodude
Replies: 1
Views: 8,601
I just added a Promaster MC7 2x teleconverter to my camera gear.

Not sure what's going on. I have a Pentax SF1, K110D and neither work 100% with the converter although the lens work fine without.

On the K110D I can only get lens info if I have the lens in the A setting positio, which is expected, but NO AUTOFOCUS.

On the SF1 (a film camera) I can not get the converter to work at all, just a flashing error in the viewfinder window no matter how it is set.

The teleconverter has a full set of pins or seems to, as opposed to some other that I have seen with less pins.

Figured my results would be the other way around. The lens I was testing on both was a TAMRON 28-200 F3.8-5.6 zoom. Not a DA only lens.

I can shoot manual focus with the lens. Looking for a manufactuer manual on the TC so I can see if there are some recommendations or disclaimers.

:(
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