Search results for 'uv filter' - page 225
Interesting Reading about simulated AA filter of K-3
Which comes back to point I made earlier.... if its so easy to sort out in software, why would Pentax go to all this trouble of creating this new revolutionary technololgy if they could have just provided an update to PDCU??
Posted by McGregNi on 09/10/2013 - 22:54
Interesting Reading about simulated AA filter of K-3
Which comes back to point I made earlier.... if its so easy to sort out in software, why would Pentax go to all this trouble of creating this new revolutionary technololgy if they could have just provided an update to PDCU?? I don't think an update to PDCU would have had quite the same impact do you...
Posted by davidstorm on 09/10/2013 - 22:57
Interesting Reading about simulated AA filter of K-3
It is actually a brilliant little bit of design, wonderful lateral thinking. Competitors are probably kicking themselves for not doing it first and of course those with no sensor shake technology can't do it in-lens so easily. There are three settings I think, off and two strengths of moire reduc...
Posted by johnriley on 09/10/2013 - 23:08
Interesting Reading about simulated AA filter of K-3
It is actually a brilliant little bit of design, wonderful lateral thinking. Competitors are probably kicking themselves for not doing it first and of course those with no sensor shake technology can't do it in-lens so easily. Not quite. Actually the patents for this go way back, covering both lens ...
Posted by kh1234567890 on 09/10/2013 - 23:37
Interesting Reading about simulated AA filter of K-3
There is a difference between splitting the light into four beams which then fall onto adjacent sensor sites and jiggling the sensor - the result is similar but not the same. Yes, exactly, that was what I have been trying to say but couldn't put it quite that way! :) The aa filter is one 'method' of...
Posted by McGregNi on 10/10/2013 - 00:24
Interesting Reading about simulated AA filter of K-3
Which comes back to point I made earlier.... if its so easy to sort out in software, why would Pentax go to all this trouble of creating this new revolutionary technololgy if they could have just provided an update to PDCU?? Isn't moire famously hard to get rid of in software?
Posted by Mongoose on 10/10/2013 - 09:46
Interesting Reading about simulated AA filter of K-3
Well, if the only method of removing it is blur, as it has been said here, then that would be a tricky matter. Bits of slightly out of focus areas on a photo can ruin the whole thing. If we are moving to cameras without aa filters generally then you'd expect software progrmmers to start to write in ...
Posted by McGregNi on 10/10/2013 - 16:04
Interesting Reading about simulated AA filter of K-3
Which comes back to point I made earlier.... if its so easy to sort out in software, why would Pentax go to all this trouble of creating this new revolutionary technololgy if they could have just provided an update to PDCU?? Isn't moire famously hard to get rid of in software? Lightroom 4 onwards ha...
Posted by Smeggypants on 10/10/2013 - 16:26
Interesting Reading about simulated AA filter of K-3
good to know Smeggy, thanks
Posted by Mongoose on 10/10/2013 - 16:31
Interesting Reading about simulated AA filter of K-3
If we are moving to cameras without aa filters generally then you'd expect software progrmmers to start to write in some special removal tools, if its possible, along the lines of Noise Reduction. I'm not aware of any myself yet - but then again, maybe you can do it all with one click in Lightroo...
Posted by Cuchulainn on 10/10/2013 - 16:32
Interesting Reading about simulated AA filter of K-3
[quote:3496ace15f="McGregNi"]Which comes back to point I made earlier.... if its so easy to sort out in software, why would Pentax go to all this trouble of creating this new revolutionary technololgy if they could have just provided an update to PDCU?? Isn't moire famously hard to get rid of in sof...
Posted by SteveEveritt on 10/10/2013 - 18:22
Interesting Reading about simulated AA filter of K-3
Best solution is to re-shoot it :shock: --
Posted by Algernon on 10/10/2013 - 18:56
Interesting Reading about simulated AA filter of K-3
I've only had really bad moire once (ironically on the K10D :wink:) and it was hard to imagine cleaning it up easily in software without destroying the image. It was on some steel grating/mesh, and the image was basically covered in coloured stripes. Something about the spacing of the mesh just ...
Posted by Pentaxophile on 10/10/2013 - 19:44
Interesting Reading about simulated AA filter of K-3
The AA is done at 500Hz evidently, and SR happens at subsonic few Hz frequencies, so yes they can work together as they don't overlap and even if they did it would probably cope. adding a HF signel to a LF signal wont' hurt I'd like to know if it works at all during a flash exposure which is of...
Posted by sbrads on 11/10/2013 - 14:33
Interesting Reading about simulated AA filter of K-3
So the contention that 'its a bit tricky' to deal well in software holds does it? So far no has detailed an effective software solution apparently, at least not anyone who has actually done it themselves. I can understand that its not just about removing the colours from the moire patterns - the...
Posted by McGregNi on 11/10/2013 - 14:47
Interesting Reading about simulated AA filter of K-3
What does all this speculating matter?.....the main thing is whether it works or not and that you can turn it on or off instead of buying two versions of the same camera! :roll:
Posted by michaelblue on 11/10/2013 - 15:42
Interesting Reading about simulated AA filter of K-3
What does all this speculating matter?.....the main thing is whether it works or not and that you can turn it on or off instead of buying two versions of the same camera! :roll: here here
Posted by Mongoose on 11/10/2013 - 17:31
Interesting Reading about simulated AA filter of K-3
So the contention that 'its a bit tricky' to deal well in software holds does it? It is impossible to accurately deal with it in software. You can mask/replace colour artifacts and/or moiré but you cannot systematically "undo" these artefacts. The term "aliasing" refers to the fact that spat...
Posted by Class_A on 27/10/2013 - 08:06
Interesting Reading about simulated AA filter of K-3
So the contention that 'its a bit tricky' to deal well in software holds does it? It is impossible to accurately deal with it in software. Actually not quite true. If you oversample sufficiently then you can anti-alias accurately in software. CD players have been doing this for years. than the pun...
Posted by kh1234567890 on 27/10/2013 - 08:35
Interesting Reading about simulated AA filter of K-3
Also, its effect varies across the image with shutter speeds higher than the sync-speed, i.e., it is not a uniform blur that is applied. It will be interesting to see how well it suppresses artefacts and responds to sharpening near its limits. In what way does its effect vary across the image? The p...
Posted by BarryPearson on 27/10/2013 - 08:41
