Search results for 'back focus' - page 2205

Use * as a wildcard for partial matches


Macro and "Trap Focus"

I know this is an old'ish thread but I thought I'd add the following:- I was explaining to my son the possible uses of trap focus at the weekend and I tried to demonstrate it, and failed because I have only AF lenses with me at the moment. Snap-in or trap focus doesn't work with the 16-50 DA* ...

Posted by Mannesty on 16/08/2007 - 17:37

Macro and "Trap Focus"

EDIT: I can't seem to make trap focus work on the K10D, even with an old Vivitar manual K mount lens. Has anybody actually got this to work on a K10D? Yep.

Posted by ChrisA on 16/08/2007 - 17:52

Macro and "Trap Focus"

I have used it on the k10. I suggest that if you want snap-in focus with your af lenses, that a little peice of cello/scotch tape (or even a strip of paper) over the contacts on the lensmount will do it, providing it's not too thick...

Posted by Don on 16/08/2007 - 17:57

Macro and "Trap Focus"

EDIT: I can't seem to make trap focus work on the K10D, even with an old Vivitar manual K mount lens. Has anybody actually got this to work on a K10D? Yep. Thanks Chris, any chance you can add to that. I thought all that was needed was a MF lens and AF on the body. Clearly there is more to it. Do te...

Posted by Mannesty on 16/08/2007 - 18:38

Macro and "Trap Focus"

I have used it on the k10. I suggest that if you want snap-in focus with your af lenses, that a little peice of cello/scotch tape (or even a strip of paper) over the contacts on the lensmount will do it, providing it's not too thick... Thanks Don, I have enough manual lenses to try, just not with m...

Posted by Mannesty on 16/08/2007 - 18:41

Macro and "Trap Focus"

camera body set to af manual focus lens set to whatever distance you need. press and hold shutterbutton or lock the remote release. when camera or subject moves ito the correct focus, the shutter fires. that simple.

Posted by Don on 16/08/2007 - 18:44

Macro and "Trap Focus"

[quote:fc50dc5077="Mannesty"]EDIT: I can't seem to make trap focus work on the K10D, even with an old Vivitar manual K mount lens. Has anybody actually got this to work on a K10D? Yep. Thanks Chris, any chance you can add to that. I thought all that was needed was a MF lens and AF on the body. Clear...

Posted by ChrisA on 16/08/2007 - 18:57

Macro and "Trap Focus"

camera body set to af manual focus lens set to whatever distance you need. press and hold shutterbutton or lock the remote release. when camera or subject moves ito the correct focus, the shutter fires. that simple. Sorted. I had my 'AF when shutter button halfway' set to off. This technique req...

Posted by Mannesty on 16/08/2007 - 19:09

'The Coming Earthquake In Photography'

No amount of technology is going to change that. Wasn't 64K more memory than anyone would ever need in a personal computer? The point of my post was that this is not a technology issue, so analogies with 64Kb of RAM don't apply. I think it's the time to view, not the time to make, which is th...

Posted by George Lazarette on 22/04/2007 - 12:10

'The Coming Earthquake In Photography'

So we're back to stills, not video? Well I didn't take the article as saying that the need for stills will go away, just that the means of acquisition - in photojournalism particularly - will change. The time taken to edit video is a function of the number of frames to be edited, and the spee...

Posted by ChrisA on 22/04/2007 - 18:38

'The Coming Earthquake In Photography'

So we're back to stills, not video? Well I didn't take the article as saying that the need for stills will go away, just that the means of acquisition - in photojournalism particularly - will change. [quote:abd5ef7942] The time taken to edit video is a function of the number of frames to be ed...

Posted by George Lazarette on 22/04/2007 - 20:12

'The Coming Earthquake In Photography'

The human bottleneck, in this instance, is the time it takes a human being to assimilate and respond to the millions of frames in a piece of video. A computer can read a huge file in seconds. A human takes much, much longer. The fastest computer in the world won't help you to edit videos much fas...

Posted by George Lazarette on 22/04/2007 - 22:18

'The Coming Earthquake In Photography'

What a load of rubbish... Do people still not paint portraits? Carve furniture by hand? Cook on open fires? All because they choose to do so? Is chemical film not higher resolution than CCD/CMOS? Most prints are 3:2 ratio, all professional cameras shoot 3:2 by default, this is quite close the the...

Posted by Tyr on 28/04/2007 - 18:05

'The Coming Earthquake In Photography'

I have no interest whatsoever in video. But I've used a view camera for specific purposes. You can even buy a "view camera" type setup that takes a digital back, if yor lenses have a large enough image circle. There are some things that still photography is needed for, and they'll a...

Posted by Arthur Dent on 01/05/2007 - 14:49

Lightroom User Review

I originally did this review when Lightroom was launched and posted it on www.rockforum.co.uk . Thought it may be of interest to others here :) Adobe Photoshop Lightroom> Introduction I recently downloaded a trial version of Photoshop Lightroom as I need a RAW development tool and image...

Posted by Tyr on 28/04/2007 - 17:12

some pics of bluebell hill

I like the first one a lot, though I might crop a tad off the foreground. The second one I would crop to just below the patch of bluebells so that the sky is more the focus of the photo instead of all the boring grass in the foreground as it is now. The third one is an interesting effect. It certain...

Posted by Gwyn on 29/04/2007 - 08:12

some pics of bluebell hill

Just thought I'd come back to this thread after re-calibrating my monitor to a FujiFilm Frontier 370 RGB Laser Photo Printer. Wonderful sky in the first and no loss of detal on the hill (I can see it now :lol: ). Love the Third picture though :)

Posted by Tyr on 15/05/2007 - 10:56

some pics of bluebell hill

Just thought I'd come back to this thread after re-calibrating my monitor to a FujiFilm Frontier 370 RGB Laser Photo Printer. Wonderful sky in the first and no loss of detal on the hill (I can see it now :lol: ). Love the Third picture though :) Glad you like them, glad you got your monitor calibrat...

Posted by justgetoutandride on 15/05/2007 - 21:04

A bit more macro practice

Very short plane of focus, what apperture did you use? I know it isn't easy without a flash because of light obstruction. Biggest problem I have with macro is light, then DoF to get the whole subject in.

Posted by Tyr on 29/04/2007 - 12:31

A bit more macro practice

Very short plane of focus, what aperture did you use? F16, with a 50mm lens on a 52 mm tube for the beetle (31mm for the bee). It was very hard to focus, especially with the beetle running about. It was exclusively by moving the camera, not the focus ring. Short of applying glue to the paper ...

Posted by ChrisA on 29/04/2007 - 17:48

Proudly supporting Pentax User

Samsung Logo Asahi Pentax Logo