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Forum: Post Your Photos!
11-16-2019, 07:28 PM
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Yes prime focus, 12" Dob telescope 1500mm fl. I had to raise the mirror up two inches to reach focus with my K50.
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Forum: Post Your Photos!
10-12-2019, 06:49 AM
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lol It's a Zhumell Dob Telescope 300mm F5 1500mm fl
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Forum: Pentax SLR Lens Discussion
10-11-2019, 01:15 PM
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I want to try AP with the lens, thought a collar may make it better to mount.
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Forum: Post Your Photos!
10-11-2019, 01:08 PM
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Forum: Pentax SLR Lens Discussion
10-04-2019, 10:09 AM
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Hello all, Is there a lens collar made for this lens ?
Thanks
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Forum: General Photography
09-08-2019, 07:06 PM
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Thanks all for the replies, I'm new to photography, I bought my K50 to learn AP and really don't know a lot about photography other then Astrophotography guess I took the hard road first lol. But did learn a lot about polarizing filters here, thanks all.
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Forum: General Photography
09-08-2019, 12:58 PM
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Got this filter with a Sears 28mm lens from the 60s. Has a peg as shown in photo where you can rotate the filter, anyone know the purpose for that ?
Would this filter be good to use with todays DSLRs
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Forum: Pentax SLR Lens Discussion
09-07-2019, 08:14 AM
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Well was able to focus on the MW last night and like you said not a great lens for AP. Don't need to look far from the center of image to see the field curvature. Stopped down to F8, F4 was vary bad. Two min exposure ISO 800 bortle 8 sky.
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Forum: Pentax SLR Lens Discussion
09-06-2019, 04:48 PM
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Was able to adjust and now can go past infinity all is good. First pic at infinity before adjustment, distance about 200'
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Forum: Pentax SLR Lens Discussion
09-06-2019, 01:36 PM
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Yes the adapter inserts flush to the camera mount face...
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Forum: Pentax SLR Lens Discussion
09-06-2019, 01:18 PM
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I'm sure I have the correct adapter, no flange,lens screws tight to camera mount face. Here is a pic set to infinity, does it look in focus ? The tree just above the roof peak is about 100+ feet away but looks out of focus. I know not the best photo to check focus.
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Forum: Pentax SLR Lens Discussion
09-06-2019, 12:50 PM
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I bought the M42 adapter for my K50 and its a good fit. I also bought the 135mm f3.5 that was with this kit to the old Sears film camera that also did not reach infinity with my K50 but found directions on how, this lens is different however.
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Forum: Pentax SLR Lens Discussion
09-06-2019, 11:54 AM
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Would anyone know the procedure to adjust the infinity stop on this lens ? Will not quite reach infinity with my K50 Thanks...
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Forum: Post Your Photos!
06-15-2019, 07:57 AM
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Thanks guys , I can't believe a lens from the late 60s works this well .
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Forum: Post Your Photos!
06-12-2019, 09:34 PM
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Forum: Pentax SLR Lens Discussion
05-31-2019, 09:26 AM
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Thanks for the imfo Steve, I also bought a 135mm f 3.5 for $15.00 .He also has a 50mm or 55mm ,he bought the camera and three lenses for $15.00 lol .I may need to buy that one also. pic with the 135mm
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Forum: Pentax SLR Lens Discussion
05-31-2019, 06:50 AM
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Bought this from a friend last night for $15.00 . anyone know the maker and what year it may be ? I took a few close up shots this morning with my K50 , I'm no pro but they look pretty good to me.
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Forum: Pentax K-70 & KF
05-31-2019, 06:13 AM
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I went to Amazon ,searched M42 adapter ,several choices
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Forum: Pentax K-70 & KF
05-27-2019, 05:33 PM
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Thanks for the reply, yes a screw in mount ,My T ring has a flange I use it for AP ,found the right one thanks
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Forum: Pentax K-70 & KF
05-27-2019, 10:43 AM
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Hello all, I just bought a 135mm lens, its old and from sears made in Japan , Seems to be a sharp lens but cant focus to infinity .I need a few more mm of in focus.
Is there a low profile T ring for the K50 ? or other way to mount this lens Thanks
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Forum: Post Your Photos!
12-27-2018, 09:37 PM
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Forum: Post Your Photos!
12-27-2018, 07:53 AM
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53x240s 127mm f9.4 CG-4 mount K50
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Forum: Post Your Photos!
12-04-2018, 03:47 PM
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Forum: Post Your Photos!
12-04-2018, 02:32 PM
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The Moon through my 12" Dob
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