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C-mount adaptor for k3?


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#1 Sir Alvin Ekarma

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Posted 19 July 2006 - 08:21 PM

Has anyone ever tried using one of these? It's a c-mount adaptor for a Pentax M42 mount. Kinda intriguing.

http://www.borg-tele.../shop/7527.html
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#2 Olex Kalynychenko

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Posted 20 July 2006 - 03:44 AM

Has anyone ever tried using one of these? It's a c-mount adaptor for a Pentax M42 mount. Kinda intriguing.

http://www.borg-tele.../shop/7527.html


M42 screw mount lenses have flange focal distance 45.5 mm
C-mount lenses have flabge focal distance 17.52 mm.
I not see draft of this adapter, but, i can suppose, they set C-mount lens on M42 flange focal distance.
45.5-17.52 = 27.98 mm, this is super macro mode for C-mount lens.
I don,t know what focusing distance will have this system, possible 2....5 sm.
You need macro shoots ?
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#3 Sir Alvin Ekarma

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Posted 20 July 2006 - 11:32 AM

M42 screw mount lenses have flange focal distance 45.5 mm
C-mount lenses have flabge focal distance 17.52 mm.
I not see draft of this adapter, but, i can suppose, they set C-mount lens on M42 flange focal distance.
45.5-17.52 = 27.98 mm, this is super macro mode for C-mount lens.
I don,t know what focusing distance will have this system, possible 2....5 sm.
You need macro shoots ?


I poked around some more and it looks like you'd need one of those teleconverters or something on that order if you wanted to make a c-mount work as something other than a macro lens. Of course then, it might vignette like crazy.
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#4 Ian Marks

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Posted 20 July 2006 - 11:54 AM

That thing won't work on a K3. Otherwise, everyone would be using it.
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#5 Leo Anthony Vale

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Posted 20 July 2006 - 01:10 PM

Has anyone ever tried using one of these? It's a c-mount adaptor for a Pentax M42 mount. Kinda intriguing.

http://www.borg-tele.../shop/7527.html


---An astronomical telescope site.

Could that imply these aren't for terrestial photography?

---LV
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#6 Sir Alvin Ekarma

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Posted 20 July 2006 - 01:40 PM

---An astronomical telescope site.

Could that imply these aren't for terrestial photography?

---LV


That's the problem. It's for mounting an SLR on a telescope basically. Too bad it's a no-go.
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