Search results for 'back focus' - page 1677
Catch in Focus?
Hi, Can I use this on my K-r also? Ty for helping me out! Yes, absolutely. I use it frequently with the K-r, but it depends on the lens you are wanting to use it with. Let us know and I can can give you the K-r settings.
Posted by milamber on 12/04/2012 - 12:30
Catch in Focus?
I think what the op wanted was a way to leave the camera without having to keep the button depressed and have it take a shot when something comes in focus. I expect it can be done with a cable release, but not sure how else.
Posted by SteveDH on 12/04/2012 - 16:29
Catch in Focus?
If I use a Pentax-M 50mm 1:1.7 (I only have one lens that plays the game). I can manually fire the shutter with CIF provided the camera is set to AFS. It does not work with a cable release, remote IR, or if the camera is set to AFC. So it looks like the shutter button is treated as a sepera...
Posted by Frogherder on 12/04/2012 - 17:00
Catch in Focus?
My Giddy Aunt. I've started something. I am using a manual focus lens ( a Takumar 135 2.5). With my old film Chinon I put a brick in the middle of the bird bath, focused on it then took the brick out of the bath and fired the shutter. Nothing happened because nothing was in focus. I went for a cup o...
Posted by vic cross on 12/04/2012 - 19:28
Catch in Focus?
EDIT. Do I need a cable release? Vic. Yes, one with a lock button. Some thing like this: Can't vouch for that one but it is cheap and should do the job! Or something like this for something more elaborate. It needs to have a shutter lock function (on the first one it just slides up to ke...
Posted by JAK on 12/04/2012 - 19:45
Catch in Focus?
i think you will end up with double exposures, as once the shutter has fired the release button needs to be depressed again for the next subject to appear and trigger again if you lock open you get double exposure. you are not dealing with a film that is triggered to move on as in Vic,s camera. actu...
Posted by redbusa99 on 12/04/2012 - 23:26
Catch in Focus?
That's a good point but not double exposures. What you describe would happen with the drive mode set to single exposure, it would just take the one exposure. For multiple exposures the drive mode will need to be set to continuous (hi or lo) and at the point something is in focus it will fire off exp...
Posted by JAK on 13/04/2012 - 00:07
Catch in Focus?
It seems my memory is fading as I get past my sell by age. I now remember after your prompts that with my old Chinon I did use a locking cable. [The old plunger type] So it meens I will have to buy a modern cable release. The origonal Pentax one at £40.00 plus is a bit much for a little bit of use, ...
Posted by vic cross on 13/04/2012 - 01:11
Catch in Focus?
Here I am again. Pentax CS-205 cable release SRS £50.00 plus. I just ordered a genuine NEW Pentax CS-205 from Mifsuds for £18.00 + £3.99 P&P. Total £21.99. I thought at that price [a bit more than the copies] I might as well have the genuine article. Dispatch from UK 3-4 days. CHEERS Vic
Posted by vic cross on 13/04/2012 - 01:53
Catch in Focus?
i seem to remember giving about £20 each for wired and wireless, genuine pentax about 18 months ago
Posted by redbusa99 on 13/04/2012 - 02:08
Catch in Focus?
Looks a good buy and about the price I paid for something similar (I got one that does automatic timing and can preset the number of exposures.) One additional thought, it might prove necessary to use the eyepiece cover provided with the camera to stop stray light affecting the exposure. Worth an...
Posted by JAK on 13/04/2012 - 02:16
Catch in Focus?
Any ideas on how to do this with a K-r? I can't use a manual cable release as it's not compatible and the IR remote won't do it either. Short of a clamp holding the shutter button down I'm stuck at present.
Posted by milamber on 13/04/2012 - 08:16
Strange infinity on Pentax 18-250mm lens
I've managed to get hold of a used Pentax 18-250mm lens to go on my K-5. It appears to be in good condition and I've checked that the auto focus is correct in the middle and ends of the focal length range. Using auto and visual focus I notice that the infinity focus point reduces towards the wide...
Posted by WaypointCharlie on 13/04/2012 - 09:49
Strange infinity on Pentax 18-250mm lens
You can't use the technique of focusing at the longest focal length and then zooming out with many zoom lenses. They are not really true zooms, but varifocal lenses. The focus point will shift as you change focal length. We call them all zooms for simplicity, although the real meaning is probably ge...
Posted by johnriley on 13/04/2012 - 09:58
Strange infinity on Pentax 18-250mm lens
Thanks John. So reaching infinity at about 7m on the focus ring (about half the focus ring range) would be considered normal for this lens at the 18mm wide end? Yes DNA, these lenses are only available used now. I believe they are basically the Tamron design with minor tweaks to badge as Pentax. ...
Posted by WaypointCharlie on 13/04/2012 - 10:45
Strange infinity on Pentax 18-250mm lens
I missed the 7m reference, and that does seem a bit excessive, but when i check out Sue's lens I'm surprised to find that hers is the same. It depends how far away the infinity subject is of course but at quite long distances and 18mm the focus point does approach the 7m mark. Her lens is very sh...
Posted by johnriley on 13/04/2012 - 10:58
Strange infinity on Pentax 18-250mm lens
I've just checked mine and it's the same. Infinity focus at 18mm is roughly at 7m on the focus ring and doesn't change up to infinity. To be honest it's not something I've ever considered. I assumed it was normal to refocus when the focal length is changed. I love my 18-250mm. It's a brilliant...
Posted by milamber on 13/04/2012 - 11:00
Strange infinity on Pentax 18-250mm lens
Thanks guys, it's good to hear that my copy isn't anything abnormal. When I got the lens a few days ago I played around checking the focus and working out how best to use it. I tied focussing at 250mm then zoomed out to 18mm, keeping the same focus. Needless to say this resulted in it being way ...
Posted by WaypointCharlie on 13/04/2012 - 11:49
Strange infinity on Pentax 18-250mm lens
Thanks John. So reaching infinity at about 7m on the focus ring (about half the focus ring range) would be considered normal for this lens at the 18mm wide end? Yes DNA, these lenses are only available used now. I believe they are basically the Tamron design with minor tweaks to badge as Pentax. ...
Posted by DNA on 01/05/2012 - 20:56
