Search results for 'back focus' - page 1390
"catch in focus"
When using it keep an eye on your focus indicators, the red square in the centre and green hexagon below don't always agree! The red square shows only which focus point is being used and manual lenses will use only the centre one. The green hexagon is the only true indication that accurate focus ...
Posted by Mannesty on 29/12/2008 - 09:30
"catch in focus"
Thanks Mannesty,I'd forgotten about that. :oops:
Posted by Hardgravity on 29/12/2008 - 11:29
"catch in focus"
Ahaaaa! ... so, i have manual focus 50mm prime and a manual 28-70mm, using both for portrait stuff. The theory here is that by setting up on 'c.i.f', i can stop worrying (too much) about whether i'm in focus or not! yay! :mrgreen: ... completely missed that i could use it for that! Excellent.
Posted by fleaberto on 30/12/2008 - 16:00
"catch in focus"
Focus Trap is a useful tool for some sports events, leave the camera body on AF and with a manual lens pre focus on a point and hold the shutter release down. When the subject comes into focus the shutter fires. That is the theory, but with my Ist D the light and subject contrast has to be good........
Posted by Aiki on 10/01/2009 - 16:19
"catch in focus"
Focus trap only works with manual-focus lenses, not auto-focus lenses.
Posted by iceblinker on 10/01/2009 - 16:41
"catch in focus"
Camera body is set to AF. A manual lens is fitted. The shutter will now only fire when the green hexagon is lit to signify the lens is in focus (centre spot only) Now, point the camera at a subject moving towards or away from you and pres the shutter release and hold it down. If and when the subj...
Posted by johnriley on 10/01/2009 - 16:42
"catch in focus"
So, I can't do that ? :( Even if I switch the lense (pentax Da* 16-50) to MF. And body to AF. It shoots anyway, even when it is not in focus (the greeen hexagon is not on) Anyway, this was very interesting to hear about such possibility. Thanks for being patient with me :oops:
Posted by Aiki on 10/01/2009 - 18:39
"catch in focus"
It has to be a manual focus lens, perhaps an AF lens that can be set to MF won't work? A Pentax A series lens would be perfect for this technique.
Posted by johnriley on 10/01/2009 - 18:46
"catch in focus"
Hi John, Like many I have a bag of MF lenses, but for those that don't, would it be possible for someone with only AF lenses to tape up one or more of the lens/body contacts to achieve the same result, and if so which ones? Just a thought.. :) Cheers Liam
Posted by LiamD on 10/01/2009 - 21:04
"catch in focus"
So, I can't do that ? No, not with your lenses (Pentax DA* 16-50mm; Sigma 70-300mm APO DG), or any AF lens, unless Liam's idea works!
Posted by iceblinker on 10/01/2009 - 23:04
"catch in focus"
Maybe, but the much simpler answer is to use an A series lens. They are cheap enough on eBay.
Posted by johnriley on 10/01/2009 - 23:27
"catch in focus"
I must be dense, but I can not make this work. Here's what I'm trying: •The K7 with both the Asahi 50mm f1.4 and the Rokinon 85mm f1.4. •I'm trying both with and without tinfoil over the contacts •I have the camera set center point, single focus, and catch-in activated in the camera's C men...
Posted by Dubious Drewski on 13/12/2010 - 19:57
"catch in focus"
Do you have the camera set to AF? If not, do so and it should work.
Posted by johnriley on 13/12/2010 - 19:59
"catch in focus"
Yes, I have it on AFS. I can make it work with the K5 we have at work when I put our (broken) Pentax 16-50 on it. The AF stopped working, but with catch-in, it works again. So I've done it before, but I can't do it now.
Posted by Dubious Drewski on 13/12/2010 - 20:02
"catch in focus"
Perhaps you are starting with the lens too much in focus? Don't forget that if the green hexagon is lit and anything is in focus it will fire the shutter.
Posted by johnriley on 13/12/2010 - 20:05
"catch in focus"
Thanks for the advice so far, but I have to ask. Green hexagon? I've never seen that. But I am using an aftermarket focus screen, if that has anything to do with it. And I'm not starting in focus at all. I can be 10 feet out of focus on a subject 3 feet away from me and it fires anyway. Please...
Posted by Dubious Drewski on 13/12/2010 - 20:16
"catch in focus"
Looking through the viewfinder, there is a green hexagon that lights steadily when a lens is in focus, be it an AF or MF lens. The essentials: You need a manual focus lens and the camera body set to AF. The shutter will only release when the lens is in focus, as indicated by the green hexagon.
Posted by johnriley on 13/12/2010 - 20:23
"catch in focus"
Ah. I see the hexagon now when I attach my 50-135. I've never looked for that because I only look at the red focus-confirmation square when I shoot. Anyway, if I mount a manual lens and try it, the green hexagon never lights up. Oi! What's going on here.
Posted by Dubious Drewski on 13/12/2010 - 20:45
"catch in focus"
This is interesting for me as I love to take Whitewater Canoe pictures and as it seems it will work with the K5. Will I need a Pentax A lens or can I take my manual 500mm M42 with the PK adapter? Also, can I use a manual TC? I never heard about this technique (but then again I am only shootin...
Posted by SmutjeUK on 13/12/2010 - 20:49
"catch in focus"
I don't know, but the red square is not focus confirmation. It just shows you where the camera is focusing and when it's finished. It's the green hexagon that confirms focus. And our eyes of course...
Posted by johnriley on 13/12/2010 - 20:49
