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02-28-2010, 11:35 AM   #1
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k mount teleconverter

i have a k10d with the lenses that came with it. can i use a k mount teleconverter with it and if so on what settings

02-28-2010, 12:07 PM   #2
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I'm not 100% sure but I would assume that the lens will fit onto the teleconverter. However a couple things you should keep in mind.

1) If the teleconverter can not transmit the aperture information to the body and can not control the blades then you will always be shooting wide open. Also if you have no aperture ring

2) You will lose auto focus abilities from all your lenses unless the teleconverter has auto focus pass through.

3) If the teleconverter is completely manual you are looking at manual mode for everything no Av, Tv, Sv, or P mode at all
02-28-2010, 01:15 PM   #3
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so much 2 learn

QuoteOriginally posted by epqwerty Quote
I'm not 100% sure but I would assume that the lens will fit onto the teleconverter. However a couple things you should keep in mind.

1) If the teleconverter can not transmit the aperture information to the body and can not control the blades then you will always be shooting wide open. Also if you have no aperture ring

2) You will lose auto focus abilities from all your lenses unless the teleconverter has auto focus pass through.

3) If the teleconverter is completely manual you are looking at manual mode for everything no Av, Tv, Sv, or P mode at all
Good Greif >there is so much to learn. I just bought a teleconverter for my range of Kmounts . Now i know it won't work on my AF junk It's also POPS so I won't be using it on telephotos. Thanks for the info. though...that's why i signed up.
02-28-2010, 01:24 PM   #4
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no no. It will work on your AF lenses but not in AF mode. you will be doing the focusing by hand/Manual focus. I know Sigma sells an AF teleconverter for Pentax but it's $200+ CDN i believe not too sure about the number of elements and quality though.

03-01-2010, 09:21 AM   #5
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What functions are available depends on the specifc TC. Some support SDM focus but others don't, some support screw drive focus but others don't, some support auto-aperture but others don't.
03-05-2010, 10:25 AM   #6
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I hope you didn't buy the one that only have "don'ts"..
In any case, it should still work whatever you got.
03-05-2010, 08:43 PM   #7
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well i think i will bid on Item number: 230444862899 on ebware it's metal- automatic teleconverter but i don't see any contacts and/or bid on this: Item number: 230444865581 it's a kiron but strictly for Pentax K mounts(which I understand are different than regular Kmounts and definately wont work not SA mounts.)
03-05-2010, 08:54 PM   #8
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another ebware item...but could you tell me what i would use it for? does HOYA refer to the lens within the "Kiron Reverse Mate 55 P/K HOYA 49-55,for Pentax K mt,NR item 230444811747

03-05-2010, 09:37 PM   #9
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QuoteOriginally posted by EyeSpy Quote
well i think i will bid on Item number: 230444862899 on ebware it's metal- automatic teleconverter but i don't see any contacts and/or bid on this: Item number: 230444865581 it's a kiron but strictly for Pentax K mounts(which I understand are different than regular Kmounts and definately wont work not SA mounts.)
If you don't want to spend a mint and want a 2x AF, Get one of these..

Tamron 2x Pz-AF BBAR MC7 teleconvertor for Pentax K7 Kx - eBay (item 300403133070 end time Apr-02-10 19:33:28 PDT)

Works with FA, DA, and SDM.

03-05-2010, 09:41 PM   #10
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QuoteOriginally posted by EyeSpy Quote
another ebware item...but could you tell me what i would use it for? does HOYA refer to the lens within the "Kiron Reverse Mate 55 P/K HOYA 49-55,for Pentax K mt,NR item 230444811747
It is made for turning the lens around so you can use it as a closup/macro lens. Fun to do, could produce nice results, you can buy a generic reverse adapter for less than that one is likely to go for, just because of the Kiron brand. Could be wrong about that. Worth watching..

The Hoya is a separate stepping ring to adapt the 55mm thread to a 49mm thread (standard 50mm lens filter thread).

03-05-2010, 09:56 PM   #11
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QuoteOriginally posted by EyeSpy Quote
well i think i will bid on Item number: 230444862899 on ebware it's metal- automatic teleconverter but i don't see any contacts and/or bid on this: Item number: 230444865581 it's a kiron but strictly for Pentax K mounts(which I understand are different than regular Kmounts and definately wont work not SA mounts.)
Actually, I think I'd suggest that you stay away from eBay at this point. I get the sense from the questions you're asking that maybe you should do some more studying up before you dive in. I'd hate to see you put out good cash on stuff that's not going to work the way you expect.
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