Search results for 'back focus' - page 1370
shake control on the k10
'll spare chris from having an anurism bursting in his brain, by not rehashing what caused me to draw those conclusions, but will say his testing and results convinced me that the sr is of little use except for telephoto shots, handheld. "the sr is of little use to me," is what I meant to say. We ...
Posted by Don on 25/09/2008 - 19:45
Refurb / Ex Demo - Part 2!
Hi everyone, I have just had another delivery of refurb & ex-demo stock from the lovely people at Pentax UK. All these prices include postage to mainland UK. All with 12 months warranty K100D + 18-55 - £185 K100D Super + 18-55 - £210 K110D Body (New) - £190 16-50/2.8 DA* - £375 SOLD ...
Posted by Chris@SRSWATFORD on 23/09/2008 - 13:04
SR stabilisation
I'm starting this thread partly in response to the comments made by ChrisA and Don regarding SR. Shot a wedding on Saturday with the K20D - something like 6.5Gb of RAW files :P There are a few images (and I mean a few) that were blurred when the shutter-speed/focal-length would dictate that it s...
Posted by MattMatic on 29/09/2008 - 16:36
SR stabilisation
Mike, You are correct, SR does need stabilisation time. In continuous mode all is well - the camera will track any shake. My problem was probably that I'm quickly putting the camera to my eye, knowing that the focus is correct (because neither I nor the subject had moved and I was working at f/11-...
Posted by MattMatic on 29/09/2008 - 16:47
SR stabilisation
I focus with the shutter button, so SR is almost always on when I "fire". I originally had it set to the rear button, but that didn't give SR enough time to go on. And, focusing with the rear button and then waiting for SR to kick in gave enough time for the subject to move. Now, I have the rear ...
Posted by pentaxian450 on 29/09/2008 - 17:22
SR stabilisation
As there is a function to prevent shutter release if AF is not locked, I'd have thought it'd be relatively simple to impose the same restriction if SR is not ready (as an option, of course). I just registered to express my full support for that idea. I have been suggesting such a "force SR mode" for...
Posted by pareto on 04/10/2008 - 15:15
SR stabilisation
Wow, thank you. If I may add another suggestion which is not too off-topic as it also relates to SR: Auto ISO allows to set the upper and lower ISO limit. But the algorithm which chooses the respective ISO is not quite transparent and might be inadequate in many cases. I think that is one reason ...
Posted by pareto on 04/10/2008 - 23:21
SR stabilisation
Pareto, The K20D auto ISO algorithm differs slightly from the K10D, and tends to aim for lower ISO overall. However, in both cases, by far the easiest thing to do is to assign ISO to the front wheel and use Av mode. You'll have to go into the custom menu and look for the e-dial section. In that...
Posted by pareto on 05/10/2008 - 12:23
SR stabilisation
Check out the little video of the cornstarch :P More references: http://en.wikipedia.org/wiki/Cymatics Matt Thanks for this link - its great:P i wanted to know what happens if you then reduce the frequency back down again - do the patterns simply work their back down again to end up with the simpl...
Posted by alfpics on 09/10/2008 - 09:34
SR stabilisation
Ok, back on thread... Actually the test for this is NOT to use a vibrating plate, but to use a solid platform. I held the K20D+grip firmly down onto a table. I used 90mm and a slowish shutter speed. 1. SR enabled, hold button for a while and then fully press. 2. SR enabled, let the camera idl...
Posted by MattMatic on 10/10/2008 - 10:25
SR stabilisation
Tel, It's because I have "disconnected" the focus from the shutter button. I only focus with the rear AF button. This is probably why I can push the button down so quickly and catch the SR out :P (Sorry I forgot to mention that!! It's an option in the custom menu.) Matt
Posted by MattMatic on 10/10/2008 - 11:08
SR stabilisation
Ok, back on thread... Actually the test for this is NOT to use a vibrating plate, but to use a solid platform. I held the K20D+grip firmly down onto a table. I used 90mm and a slowish shutter speed. Sorry, Matt, I have to challenge your experimental design. I've already shown that there's ...
Posted by ChrisA on 10/10/2008 - 12:11
SR stabilisation
Chris - disagree ;) :P I'm not trying to discern the difference between SR and no SR on a solid foundation ;) The problem I had was with shutter speed and conditions that I would not have expected any blur-induced shake without SR. Yet there was clearly shake demonstrated - and I was suspecting ...
Posted by MattMatic on 10/10/2008 - 12:19
SR stabilisation
If by this, you mean 2) is SR stabilised, and 3) is SR unstabilised, then I completely accept the results, and your conclusion. I'll repeat the experiment when I get a chance, and I fully expect to get the same result. Absolutely. Bit rushed as I'm trying to multitask.. something I'm not too hot at ...
Posted by MattMatic on 10/10/2008 - 15:37
scratched sensor
yes i am making a claim on the home insurance its still going to cost me £125 though. Well if you are claiming for both the camera and lens you may do ok out of it depending on if they let you keep the broken items. If they do then you should get your £125 back without much trouble.
Posted by Mike-P on 29/09/2008 - 20:19
Autofocus prob on K20D
Am I doing something stupid?:roll: Was out playing with K20D and my 90mm Tamron macro. I was taking some long shots but when half pressing the shutter the central focus spot, which was on a fence post, made a "de-de-det" noise, jumped in and out of focus and refused to let me take a picture, the...
Posted by alig on 01/10/2008 - 21:31
Autofocus prob on K20D
Did you have the focus switch set to Continuous (AF-C)?? That would make it hunt around a bit if you were moving the camera slightly. Also, you may have had it set to Selective focus on the back dial, which probably meant you weren't focussing on what you thought you were? Get reading that man...
Posted by Tooks on 01/10/2008 - 21:39
Autofocus prob on K20D
I do not think this is anything to worry about. It happens on my k10D as well. I think the auto focus works by a little analysis that tries to peak the high frequency components of the image at focus point. This relies on there being some detail at the focus point. The subject matter, lighting, m...
Posted by GlynM on 01/10/2008 - 22:25
Autofocus prob on K20D
Nothing to worry about !......my K20 does the same,very difficult for the auto focus to pick up a point on a flat nondescript surface, my D's was just the same. As Glyn says look for an edge, or a surface with a change of colour and it will be fine!................this is with it set at centre focus...
Posted by beginner on 01/10/2008 - 22:32
Autofocus prob on K20D
The focussing mechanism relies on the contrast of the focus area. If you have trouble focussing on a horizontal edge, find a vertical one and recompose after focussing. If that fails, MF works every time.
Posted by Mannesty on 01/10/2008 - 22:42
