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Forum: Troubleshooting and Beginner Help
08-30-2019, 01:50 AM
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The rig has an object lens cell only which unfortunately is highly discoloured and may be unrecoverable.
I have some workshop skills and facilities and I am wondering if a telescope objective is the appropriate lens to use for replacement. Please note that this is not a true telephoto lens having only the one optic cell.
I know these Novoflex lens show up on Ebay but I do rather enjoy "playing around in my shed"
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Forum: General Photography
02-14-2019, 12:17 PM
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That is all part of the challenge.
John
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Forum: General Photography
02-13-2019, 05:58 PM
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Ahem, I don't care how hard it is to do manually or what some camera (other than my K-5 with heritage PK lenses) can do and I did say the principal motivation for this is make a practical device in my own shop with my own tools etc.
Thanks
John
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Forum: General Photography
02-13-2019, 12:49 AM
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Hi Brian
This is a manual version of what I have in mind..
Trigger for shutter release and the front handle moves the focus, I assume you could do something similar with the zoom.
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Forum: General Photography
02-12-2019, 12:22 PM
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The main motivation of this idea is the actual making of the motorized device and seeing that no one has said it is a 'bad idea' I may go ahead with it!
thanks
John
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Forum: General Photography
02-12-2019, 01:12 AM
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I have a K-5 and a variety of mostly manual lenses and I am interested in focus stacking for outdoor scenes.
I have read about changing focus points between shots and about manually turning the focus but I expect there would be movement issues with both.
So I am considering making a motor mechanism to manually turn the focus ring between shots. Any comments please?
john
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Forum: Travel, Events, and Groups
12-21-2012, 07:09 PM
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Oh dear! Just heard from the head JAFA and plane wont be coming here after all!
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Forum: Travel, Events, and Groups
12-19-2012, 01:20 AM
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... I have just learned the de Havilland Mosquito will be at the Ashburton aviation museum around about 11-13 January!;)
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Forum: Travel, Events, and Groups
12-12-2012, 11:55 AM
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Bugger! I have been wondering why it is becoming so hard to focus my camera then my optician tells me I have cataracts developing! Most of my lenses are MF too!
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Forum: Travel, Events, and Groups
12-08-2012, 03:36 PM
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Page 151 in the manual
"Continuous Shooting
Pictures can be taken continuously while the shutter release button is kept pressed"
{LATER} Well that didnt take long, when all else fails RTFM! On a different page is says continous shooting is not available in the green square setting. (but it does not say that on the continous shooting page) {/later}
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Forum: Travel, Events, and Groups
12-08-2012, 03:19 PM
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I tried continuous mode with my K5 but when I go to the menu there is no option for it?
I suppose I have something set that precludes continous mode? I have gone back to default setting and still no joy!:confused:
Any clues please before I go to a wider audience?
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Forum: Travel, Events, and Groups
12-07-2012, 01:10 PM
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The ring would have to be matched to the one I have for perfect alignment.
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Forum: Travel, Events, and Groups
12-07-2012, 12:38 PM
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Hey! Maybe I could buy that and made a stereo photo snaiper rig!!:D
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Forum: Travel, Events, and Groups
11-14-2012, 08:10 PM
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Grerat start Pete!
I have a Sigma 400mm 5.6 on my camera and was out standing quitely by the fence waiting for those little finches to stop flittering about. Two little waxeyes landed on the fence about 6' away, way inside minimum focus distance and I swear the little shits were laughing at me! Nice little critters too they were!
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Forum: Travel, Events, and Groups
11-14-2012, 01:33 PM
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Ahem, about that Tair, how is the ring modification coming along?
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Forum: Travel, Events, and Groups
11-06-2012, 01:49 PM
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Did you have the Tair in full combat configuration?
Thats a very nice radiator mascot!:lol: Can we see the rest of your car?
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Forum: Travel, Events, and Groups
11-04-2012, 12:53 AM
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Forum: Travel, Events, and Groups
11-03-2012, 10:46 PM
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The ring thingy is something I do when converting an M42 to Pentax K.
No locking pin on M42 mount.
Not all lenses have enough meat around the mount to provide a place to drill to accept the K mount locking pin, some are awkward and have a tapered bit right there but the Tair is much easier in that a simple ring can be fixed around the base of the lens to increase the diameter.
Once you have a place for the locking pin to engage it is an easy matter to firmly screw the M42/K adapter onto the lense and leave it there. No more sticking big, hairy, sticky finger into the camera to disengage the adapter as the adapter is now a (semi) permanent fixture on the lens.
I am confident we will be seeing a series of pictures detailing the procedure..:)
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Forum: Travel, Events, and Groups
11-03-2012, 07:11 PM
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Forum: Travel, Events, and Groups
10-31-2012, 07:53 PM
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So it arrived? We require full detailed account of the project with photos at every stage!:)
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Forum: Travel, Events, and Groups
10-31-2012, 03:42 PM
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Transit, check your snail mail!:D
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Forum: Travel, Events, and Groups
10-30-2012, 12:06 PM
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As 500mm mirror lenses go that Tokina is quite un-stubby.
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Forum: Travel, Events, and Groups
10-29-2012, 12:41 AM
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Ross, it is not a big diameter so I assume f1:8. I think it would be quite usable and worth a few dollars.
However, you are only 50 miles from me so if you want to mess with mirror lenses I have a selection you could borrow. 500mm Sigma f1:4 (huge), 600mm Sigma f1:8 and 1000mm Sigma f13:5. (I note to my horror that I actually have two of the 500mm f1:4 and the 600mm f1:8!) One of the 500mm has a matched 2X teleconverter (but I am not sure it is really any good, maybe it has been messed with in an earlier life).
None of them seem to give startling image quality and of course there is the issue of the donut boket but they are a way to get right "out there" with a lens that is still light enough to carry around.
Let me know... John
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Forum: Pentax SLR Lens Discussion
10-24-2012, 10:34 PM
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I suggest what we used to do with moto cross cycle magnetos and cover the entire ensemble with Plasticine.:confused:
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Forum: Pentax SLR Lens Discussion
10-24-2012, 10:31 PM
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He he, things are still a little shook up around there..;)
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