Search results for 'back focus' - page 2136
Out of focus or blur?
You might find this thread interesting ....... https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/346352-k-1-dfa-28-105-mirror-slap-shutter-shock-etc.html
Posted by pschlute on 25/05/2017 - 00:09
Out of focus or blur?
I think it happened again. It's starting to worry me. This time with the 50 1.4 lens. Is it every possible I can have a vertical blur at 1/160? Next time I will shoot a I will shoot TAV without SR. Crop attached: any suggestion? Should I start to shoot with the LV with the ES?
Posted by sebas77 on 01/06/2017 - 20:12
Out of focus or blur?
I made some tests in my garden, I have the suspect is due to a combination of me using the continuous shooting mode (H) and the bad habit to start moving the camera before the exposure ends (allegedly)
Posted by sebas77 on 01/06/2017 - 20:55
Out of focus or blur?
It's quite widely discussed on other forums so you need to look it up. Software such as http://www.focusmagic.com/ can fix the shots you've already done. Adobe have something as well... part of smart sharpening. --
Posted by Algernon on 02/06/2017 - 08:28
Out of focus or blur?
Thanks I wasn't looking for a solution after the shot, but before it. I really need to figure out of the problem is due to my way of shooting.
Posted by sebas77 on 02/06/2017 - 13:47
Out of focus or blur?
I came to the conclusion that this could be the result of me handling wrong the camera..the weight comes with a toll. I am not convinced that the SR didn't play a role, therefore I will keep on testing with and without it. Because of this, I was thinking to buy a battery grip, however I had once a ...
Posted by sebas77 on 08/06/2017 - 18:23
Out of focus or blur?
This has been a good post to read through, and reaffirm that I should do my own investigations. It's disappointing to see SR actively contributing to image shake, when obviously we think it's going to be doing the opposite. I've tended to leave SR always on, unless tripod mounted, but I think I ...
Posted by richandfleur on 08/06/2017 - 21:17
Out of focus or blur?
During my researches I read somewhere that the SR behaves the worst at 1/125. However I didn't investigate further to see how credible the source was.
Posted by sebas77 on 09/06/2017 - 10:17
Out of focus or blur?
an update, in my last photoshoot I didn't use SR when I was shooting at a speed above the inverse of the lens length. The number of blur images drastically reduced, however it could be due to the fact that I now paid more attention. Unluckily I found out that many photos where out of focus this time...
Posted by sebas77 on 27/06/2017 - 08:07
Out of focus or blur?
the camera preferred to focus the fully textured close background full of grafiti instead of the subject. I HATE that. Happens way too much. Definitely getting a vibe that the SR is actually limited to very low shutter speeds. I normally leave it on for most everything outside of tripod work, b...
Posted by richandfleur on 27/06/2017 - 09:12
Out of focus or blur?
Shake reduction actually ADDS shake when used at shutter speeds higher than the focal length you are shooting at (taking into account the crop factor unless using full frame)
Posted by michaelblue on 27/06/2017 - 09:15
Out of focus or blur?
Shake reduction actually ADDS shake when used at shutter speeds higher than the focal length you are shooting at (taking into account the crop factor unless using full frame) Be interested to know how you arrived at this conclusion. Are you refering to the K1 specifically?
Posted by pschlute on 27/06/2017 - 18:37
Out of focus or blur?
As above, is there any Pentax documentation around this?
Posted by richandfleur on 27/06/2017 - 21:16
Out of focus or blur?
I'm a bit dubious (although not dismissive) about the SR conclusions. I've shot a lot of images in my time, most not on a tripod and all of these with SR on. I have never seen any SR induced shake on any shots at high shutter speeds. I do think I am pretty good at holding a camera steady and can ...
Posted by davidstorm on 27/06/2017 - 22:28
Out of focus or blur?
I tend to agree with David there. Most of my longer telephoto shots (100-300mm), handheld, are shot at around 1/90th through to 1/500th sec, and I doubt that many would be usable without SR activated. I don't see why there should be any correlation between the focal length inverse and SR being e...
Posted by McGregNi on 27/06/2017 - 22:42
Out of focus or blur?
let's not get confused. I am not saying that the SR is bad, I am saying that the SR is allegedly bad if used when it's not needed. Above a given speed, the SR is not needed, so why enable it? Your theory is that it shouldn't affect the final result, but if this was true, why Pentax suggests to di...
Posted by sebas77 on 27/06/2017 - 22:48
Out of focus or blur?
let's not get confused. I am not saying that the SR is bad, I am saying that the SR is allegedly bad if used when it's not needed. Above a given speed, the SR is not needed, so why enable it? Your theory is that it shouldn't affect the final result, but if this was true, why Pentax suggests to di...
Posted by petrochemist on 27/06/2017 - 23:35
Out of focus or blur?
......I am saying that the SR is allegedly bad if used when it's not needed. Above a given speed, the SR is not needed, so why enable it? .....? Ok, so now we seem to have reached a point where some research and evidence is needed to determine what is this 'given speed', and how exactly to deter...
Posted by McGregNi on 27/06/2017 - 23:41
Out of focus or blur?
......I am saying that the SR is allegedly bad if used when it's not needed. Above a given speed, the SR is not needed, so why enable it? .....? Ok, so now we seem to have reached a point where some research and evidence is needed to determine what is this 'given speed', and how exactly to deter...
Posted by JAK on 27/06/2017 - 23:55
Out of focus or blur?
Agree with the firmware disable comment above. I'd be pretty annoyed if the SR caused known issues at certain shutter speeds, and this was allowed to proceed by the firmware. Bottom line is, if there is an issue at times then I'd like to know about it, but if there is I'd also have expected Pentax...
Posted by richandfleur on 28/06/2017 - 01:44
