Search results for 'back focus' - page 1659
Opinions on focus comparison please
brilliant - thanks very much for that. To be honest thinking about it I'm pretty sure I did NOT turn off SR (Doh !!!!) I'll try a few more and also do the comparison you suggest of live view v normal. Was quite disappointed with the results from both cameras to be honest - doesn't seem to me ...
Posted by judderman62 on 30/12/2011 - 12:17
Opinions on focus comparison please
The Canon looks OK to me, considering it's the kit lens. Nothing a quick sharpen in PP wouldn't fix! When your Pentax set up is working properly, the same will be true.
Posted by Pentaxophile on 30/12/2011 - 12:28
Opinions on focus comparison please
thanks Sir :)
Posted by judderman62 on 30/12/2011 - 12:35
Opinions on focus comparison please
You said both were processed in exactly the same way, I would be surprised if RAW files from different models let alone different brands would require exactly the same process settings. For a fair comparison test you would need to use a same model third party lens on each camera, even then you ma...
Posted by fatspider on 30/12/2011 - 12:53
Opinions on focus comparison please
see I didn't know that :( shows how little I know about digital photography :( I've just set up presets in lightroom as recommended in a book by Scott Kelby (meant to be a bit of a lightroom guru) and always just use those. have to admit to being pretty clueless when it comes to processing - ...
Posted by judderman62 on 30/12/2011 - 13:02
Opinions on focus comparison please
see I didn't know that :( shows how little I know about digital photography :(( I wouldn't get hung up on that. Your concern is the gross lack of sharpness, not minor differences in tone and colour. You can twiddle about with the Pentax files to make them look just like the Canon files and vice ver...
Posted by Pentaxophile on 30/12/2011 - 13:27
Opinions on focus comparison please
maybe I should go back to jpeg There is nothing wrong with jpeg, 99% of my "finished" images are from jpeg although I have got into the habit of shooting RAW+, then if the exposure on the jpeg is iffy I can correct it in the RAW file.
Posted by fatspider on 30/12/2011 - 13:34
Opinions on focus comparison please
Yep and jpeg would make more sense for these sort of 'testing' shots as it's quicker to deal with.
Posted by Pentaxophile on 30/12/2011 - 13:37
Opinions on focus comparison please
I just like the idea of being able to change the WB after the event - very useful indeed :). also there is more scope for tweaking with raw files :D
Posted by judderman62 on 30/12/2011 - 13:38
Opinions on focus comparison please
I notice the EXIFs for these shots show a six second exposure. You do have to be careful when using a tripod for long exposures - just the fact of using the tripod doesn't guarantee a stable image and any lack of stability whatsoever will adversely affect the sharpness, which may be what we're seein...
Posted by MarkTaylor on 30/12/2011 - 13:54
Opinions on focus comparison please
I notice the EXIFs for these shots show a six second exposure. Well spotted Mark, that is more than likely the cause of the poor Pentax image.
Posted by fatspider on 30/12/2011 - 14:06
Opinions on focus comparison please
I notice the EXIFs for these shots show a six second exposure. Well spotted Mark, that is more than likely the cause of the poor Pentax image. Doubtful. Although Mark's advice is very good. Both images were taken under exact same conditions (same tripod, same 6 sec exposure), and confirm the OP's...
Posted by Pentaxophile on 30/12/2011 - 14:26
Opinions on focus comparison please
thanks guys - I'll use jpeg for my next round of tests - thanks a lot for all your help :) I'll perhaps do a mix of more "technical" type set ups as John suggests and some more "real world" shots. thanks again to all
Posted by judderman62 on 30/12/2011 - 15:18
Opinions on focus comparison please
Yes next time I'll ensure SR/IS is switched off and maybe look at mirror lock up or indeed use in a brighter environment so such a long exposure is not needed. thanks again all
Posted by judderman62 on 30/12/2011 - 15:21
Opinions on focus comparison please
I'll perhaps do a mix of more "technical" type set ups as John suggests and some more "real world" shots. 'Real world' shots are invariably useless for testing focus accuracy. It's virtually impossible to compare like with like that way. The first thing to do, as JR said, is use a test chart a...
Posted by ChrisA on 30/12/2011 - 15:42
Opinions on focus comparison please
Doubtful. Although Mark's advice is very good. Both images were taken under exact same conditions (same tripod, same 6 sec exposure), and confirm the OP's general observation that his K5 images are soft. True, but there is no way of telling whether external factors which could cause movement in t...
Posted by MarkTaylor on 30/12/2011 - 23:49
Opinions on focus comparison please
One of our former members, Richard Day, suggested this method; "I don't like test charts either, they have always given me misleading results. I setup using a near infinity subject like a car number plate and working in 5 unit steps from -10 to +10, I review the results and work around the bes...
Posted by JohnX on 31/12/2011 - 12:06
Opinions on focus comparison please
Ok .. thought I would join in the fun. Camera 1 = Pentax K-5 with Sigma MKI 70-200mm f2.8 Camera 2 = Canon 50D with Sigma MKI 70-200mm f2.8 Both shots taken wide open in darkish conditions, converted from raw with no PP done whatsoever. I turned off SR on the K-5, focus is on the cup face. ...
Posted by Mike-P on 31/12/2011 - 15:30
Opinions on focus comparison please
Hmmm, looking at them now (the straw) they are posted I wonder if the K-5 lens isn't front focusing a little more than I have adjusted for.
Posted by Mike-P on 31/12/2011 - 15:34
Opinions on focus comparison please
As for actual sharpness, I would say there is not much in it but the Canon has the edge. I'd put it the other way round, myself. And the Canon image is way noisier.
Posted by ChrisA on 31/12/2011 - 15:39
