Search results for 'back focus' - page 1675
catch in focus
No problems with the focus drive running here, so lenses obviously differ. My contactless tubes present a plain epoxy coated finish to the camera. Isolating the lens and AF, so I can't see it being variations in the lens. Masking tape over contacts just stops the AF but still takes blurred pics. ...
Posted by Frogherder on 11/04/2012 - 15:02
catch in focus
Seems daft to disable this feature for AF lenses in MF mode on the camera. It's not daft at all. Expecting it to work with the camera set to MF is just wrong. I disagree. There's no logical reason why the camera can't be programmed for CIF to work when the camera is set to MF whatsoever ... ...
Posted by Smeggypants on 12/04/2012 - 01:16
catch in focus
You're missing the point. The camera only detects the point of focus when its AF system is switched on. Switch it off and you can only use MF, obviously.
Posted by johnriley on 12/04/2012 - 08:02
catch in focus
It's only a matter of programming. Pentax have for some restrictive reason chosen otherwise. Well of course that's true. You can always argue for an alternative design. It should be programmable, to allow CIF with the camera set to MF - if there was an option in MF to prevent shutter release w...
Posted by ChrisA on 12/04/2012 - 08:15
catch in focus
Interesting that F*300 doesn't work with CIF. I wouldn't have expected that at all. The only F lens I have left in the house is the 70-210 and that has no MF switch. Virtually any lens without contacts is going to work with CIF, so my K lens and adapted to PK Zeiss, Cosina and Voigtander lenses w...
Posted by Frogfish on 12/04/2012 - 08:30
catch in focus
Isn't it much easier to just follow the instructions? I know some love to make things work where they "shouldn't" work, but for the majority of users that isn't really relevant. It's a useful, but minor, feature that's available on all the Pentax DSLRs I've used, and it's a consequence of how thi...
Posted by johnriley on 12/04/2012 - 08:40
catch in focus
Isn't it much easier to just follow the instructions? I know some love to make things work where they "shouldn't" work, but for the majority of users that isn't really relevant. Thank god heavens there are people that aren't content to just put up with the status quo. It's a useful, but minor, ...
Posted by ChrisA on 12/04/2012 - 08:46
catch in focus
Isn't it much easier to just follow the instructions? I know some love to make things work where they "shouldn't" work, but for the majority of users that isn't really relevant. It's a useful, but minor, feature that's available on all the Pentax DSLRs I've used, and it's a consequence of how thi...
Posted by Frogfish on 12/04/2012 - 08:49
catch in focus
Isn't it much easier to just follow the instructions? I know some love to make things work where they "shouldn't" work, but for the majority of users that isn't really relevant. It's a useful, but minor, feature that's available on all the Pentax DSLRs I've used, and it's a consequence of how thi...
Posted by DOIK on 12/04/2012 - 08:52
catch in focus
You have a point ChrisA, but I was only mentioning in the context that most users won't really care and probably have never used the feature. I wasn't defending a prnciple of accepting everything that happens! The trouble is that simple questions tend to go off on wild tangents that don't help th...
Posted by johnriley on 12/04/2012 - 08:52
catch in focus
What I do think is that I spend most of my time shooting images, not fiddling to make things work. If I want to use CIF I use a manual focus lens. The right tool for the job. :)
Posted by johnriley on 12/04/2012 - 08:54
catch in focus
The trouble is that simple questions tend to go off on wild tangents that don't help the simple, straightforward question. It can confuse. I suppose it would be nice if we started a new thread once it gets more esoteric in its appeal, but I doubt that will happen. Er, this thread is called 'Catch...
Posted by ChrisA on 12/04/2012 - 08:55
catch in focus
If I want to use CIF I use a manual focus lens. The right tool for the job. :) Pentax doesn't actually make any of those any more, and most of the lenses they do make don't have an A/M switch. You have to rely on old lenses - and you may have plenty of those, but plenty of people may not. It i...
Posted by ChrisA on 12/04/2012 - 09:02
catch in focus
Actually I think you are both right. Clearly the best lens for catch in focus is a manual one, then it works perfectly without adaptions. For those of us without huge budgets working with a limited number of lenses then sometimes work arounds are necessary. There are at least three active ...
Posted by milamber on 12/04/2012 - 09:07
catch in focus
Unfortunately there is often not a "definitive answer" and this is a forum for discussion....so people discuss what takes their fancy.
Posted by johnriley on 12/04/2012 - 11:59
catch in focus
Unfortunately there is often not a "definitive answer" and this is a forum for discussion....so people discuss what takes their fancy. Not sure if this would be classed as a 'competing' site, and hence against the rules... it's so different from what we have here that I'd doubt it somehow... ... ...
Posted by ChrisA on 12/04/2012 - 12:09
catch in focus
It's off topic though, as we are are what we are. Not sure about the idea of simply those who sound most convincing deciding the value of things, that's self-perpetuating and leads to those who shout loudest and most convincingly drowning out what could be a more correct but more quietly expressed a...
Posted by johnriley on 12/04/2012 - 12:47
catch in focus
Unfortunately there is often not a "definitive answer" I assume that you are refering to equipment here,in which case I cannot see why there cannot be a definitive answer as (I assume) :- All K5 cameras are intrinsically the same (OK some may have various boxes ticked differently) All Pentax A...
Posted by Frogherder on 12/04/2012 - 13:43
catch in focus
I believe the whole idea of 'Catch in focus' is to allow users of Manual lenses some degree of automation. Users of the DFA 100mm f2.8 macro lens can get CIF to work by turning the clamp to 'On.' I've got the older non WR version, I do not know if the newer WR version has that feature. Hope that ...
Posted by JAK on 12/04/2012 - 14:06
catch in focus
I believe the whole idea of 'Catch in focus' is to allow users of Manual lenses some degree of automation. John I'm sure that's right, but, in macro work where most people wouldn't use AF, catch in focus is a very good way of getting a decent shot, especially if hand holding on your knees in a dark...
Posted by milamber on 12/04/2012 - 14:11
