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L
Lupo
Guest
Re: Pentax 110 <-> mFT Tinkering
I took the bayonet from 110 body
(sorry old lady)
test with c-m4/3 adapters, lens mount and tape
(from left: 18, 24, 50, 70 and 20-40)
ready (without finish, but it works)
I took the bayonet from 110 body
(sorry old lady)
test with c-m4/3 adapters, lens mount and tape
(from left: 18, 24, 50, 70 and 20-40)
ready (without finish, but it works)
m3photo
New member
Re: Pentax 110 <-> mFT Tinkering
Excellent idea, now off to buy a Pentax 110!
Ach so, vielen Dank.
Excellent idea, now off to buy a Pentax 110!
Re: Pentax 110 <-> mFT Tinkering
I had been thinking about doing this but got put off because the screws were very difficult to remove. Now I've taken more drastic measures and I'm half way through.
Keith
Yes, Lupo - Thanks for showing us the way.
I had been thinking about doing this but got put off because the screws were very difficult to remove. Now I've taken more drastic measures and I'm half way through.
Keith
slosync
Member
Re: Pentax 110 <-> mFT Tinkering
Have you determined how you will make the mount permanent?
I have the Pentax 110 Kit also, so I will be doing some surgery as you outlined above.
Cheers,
Don
Great illustration and information Lupo.
I took the bayonet from 110 body
(sorry old lady)
test with c-m4/3 adapters, lens mount and tape
(from left: 18, 24, 50, 70 and 20-40)
ready (without finish, but it works)
Have you determined how you will make the mount permanent?
I have the Pentax 110 Kit also, so I will be doing some surgery as you outlined above.
Cheers,
Don
I will not show mine, because I was much crueler, and I still haven't finished. When I got tired of the jammed screws I used a chisel.
I have no love for this camera anymore, at the two-year point the advance lever broke, and the pictures were just plain awful. However I have hopes for the lenses after reading Vivek's post
Keith
L
Lupo
Guest
It was not cruel. The old lady has mild smiled!
It was all very easy and without violence. The reincarnation was a success.
(Viele möchten lieber als eine G1-Linse denn eine heilige Kuh wiedergeboren werden
)
S
simplebot
Guest
Cool, I just built one of those a couple of days ago. I didn't destroy my 110 though, I just removed the mounting flange from it and built up enough spacers into a jinfinance c mount adapter to hit close to infinity focus. I was trying to use parts I had lying around, so I used a couple of ring plates from an old hard drive and a circle I cut from some expanded PVC sheets that I had. I still need to adjust for infinity, but it's getting pretty close. I'll take some pics tomorrow.
m3photo
New member
Hmm, I've just bought a couple of dead 110's for spares that were available on EBay thinking of Lupo's idea and will try to mate the lens mount to a spare LTM/m43 adapter I have from Jinfinance that didn't quite make it to infinity focus and he kindly sent me a corrected one and let me keep this one.
I'm thinking maybe I won't need that many spacers in comparison to a C-Mount adapter. Once I get delivery of what I need together with a couple of Pentax 110 lenses I got from EBay I'll show you the results.
I've removed the flange assembly - had to grind off the heads of the screws. I plan on putting onto a T to m4/3 mount. Any clues on the distances involved? What is the best way to get it set up for infinity focusing?
Keith
S
simplebot
Guest
Here is the adapter I built. I'll try and do some measurements on the thickness. I've gotten my infinity focus pretty close, but my adapter isn't very stiff, and there is a bit of "squish" to it. Once I get to tapping holes and assembling it with screws it'll be more solid.
Here are all the parts that make it up:
and on the camera:
I haven't really done any decent test shots with it yet. It's difficult to use it outdoors since it's fixed aperture and in the sun it wants to max out the shutter speed. The 25mm lens is also a bit too small to use well. Perhaps the other lenses would work a better.
Here are all the parts that make it up:
and on the camera:
I haven't really done any decent test shots with it yet. It's difficult to use it outdoors since it's fixed aperture and in the sun it wants to max out the shutter speed. The 25mm lens is also a bit too small to use well. Perhaps the other lenses would work a better.
D
daggerlee
Guest
Anybody know what the flangeback distance for the 110 system is?
S
simplebot
Guest
Well, so far I'm measuring about 7.6mm from the front of the pentax flange to the back face of the c mount adapter that sits flush against the micro 4/3 flange. This gets pretty close to infinity.
I think the flange back distance for the 110 lenses is about 28mm. Not sure of the exact number though.
madmaxmedia
New member
Hi Vivek,
Thanks for posting all those pics and explanation of how you adapted the lens. I think this looks like a real sleeper lens- I would love a cheap and small wide like this. Too bad about the fixed aperture, but I shoot wide open more often than not anyway. It would be nice to be able to dial it down a bit and shoot hyperfocal though.
In looking at your photos of the adapter, I think all you basically did was glue the Pentax lens to a 10mm C-mount extension tube? At that point, the Pentax is basically a C-mount lens right? (I only have 1 C-mount adapter, so didn't want to permanently attach that as well.)
Is the 10mm extension exactly right for the distance? Is infinity focus okay?
Thanks,
Steve
Thanks for posting all those pics and explanation of how you adapted the lens. I think this looks like a real sleeper lens- I would love a cheap and small wide like this. Too bad about the fixed aperture, but I shoot wide open more often than not anyway. It would be nice to be able to dial it down a bit and shoot hyperfocal though.
In looking at your photos of the adapter, I think all you basically did was glue the Pentax lens to a 10mm C-mount extension tube? At that point, the Pentax is basically a C-mount lens right? (I only have 1 C-mount adapter, so didn't want to permanently attach that as well.)
Is the 10mm extension exactly right for the distance? Is infinity focus okay?
Thanks,
Steve
L
Lupo
Guest
The measure with my adapter. (My calipers are very simple)
Infinity works fine - but only a few tests so far.
V
Vivek
Guest
Steve, No. As the picture shows, the front end was ground down a bit (trial and error) which is easy to do with the aluminum tube.
While not exact, it was the closest match. After grinding (1mm or less), the infinity focus is achieved. The rear element of the 18/2.8 lens sits well inside 10mm extension tube.
My objective was to have the simplest possible solution for mounting the 18/2.8. After trying, I did not find the other lenses all that useful.
The 18/2.8 (with the help of a step ring) also can be used with a Ricoh GW-1 (0.75X converter) and that combination does a decent job.
madmaxmedia
New member
Thanks guys, that sounds very promising. I didn't figure out that the grinding was to match distance- I thought it was for better epoxy bonding. I will begin looking for one!
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