Search results for 'uv filter' - page 228
K3 resolution
AA filter simulator was not active for penguin shot
Posted by mille19 on 12/11/2013 - 15:47
K3 resolution
Vaards, you may have misunderstood what I was saying. The K-3 has no AA filter but it does have two strengths of AA Filter Simulator that will reduce or remove moire. So in the one camera you have a choice, with or without moire reduction as you wish. I'm currently trying to get a repeatable moir...
Posted by johnriley on 12/11/2013 - 16:22
K3 resolution
Vaards, you may have misunderstood what I was saying. The K-3 has no AA filter but it does have two strengths of AA Filter Simulator that will reduce or remove moire. So in the one camera you have a choice, with or without moire reduction as you wish. I'm currently trying to get a repeatable moir...
Posted by Vaards on 12/11/2013 - 16:30
K3 resolution
[quote:3496ace15f="johnriley"]The lack of AA filter isn't any sort of worry as there is the AA Filter Simulator. Why are we discussing an Olympus camera Test Image? John K Because we are not just Pentax fanboys and might talk about technical principles of digital image in general.
Posted by Vaards on 12/11/2013 - 16:34
K3 resolution
Well there's no way to assess the effectiveness of the aa filter system here at all - because the shot was taken with it off! We would need a comparison shot exactly the same but with the simulator on to be able to determine anything. No doubt there will in time become available examples for test...
Posted by McGregNi on 12/11/2013 - 19:20
K3 resolution
As I mentioned earlier, the reason I regard it as moire is because of the way the colours come and go as the textures change - noise would remain consistent across areas of the same colour tone. The jury's out though! Its interesting that the noise reduction had effect - I imagine it can deal with m...
Posted by McGregNi on 12/11/2013 - 21:13
K3 resolution
It is very unlikely that colour effect on the birds is anything to do with moire but their natural iridescence. The colours in the feathers of a bird are formed in two different ways, from either pigments or from light refraction caused by the structure of the feather or sometimes a combination of b...
Posted by JAK on 12/11/2013 - 23:10
K3 resolution
It is very unlikely that colour effect on the birds is anything to do with moire but their natural iridescence. The colours in the feathers of a bird are formed in two different ways, from either pigments or from light refraction caused by the structure of the feather or sometimes a combination of b...
Posted by dcweather on 13/11/2013 - 00:30
K3 resolution
I'm sure this is right in many cases of bird feathers, but I can't believe that is the explanation for this particular case - this penguin is black, and there's nothing on its head that would produce any 'iridescence'. I'm not trying to overplay any moire here - no doubt it could be reduced in p...
Posted by McGregNi on 13/11/2013 - 00:36
K3 resolution
We'll have to agree to disagree on this particular Penguin, the poor thing :) It seems that we are still to find a common consensus on how to define moire exactly, and how it differs from colour noise, or indeed colour iridescence. As I said before, I'm not wanting to overplay the effect here, i...
Posted by McGregNi on 13/11/2013 - 11:41
K3 resolution
I think the colour artefacts on the penguins head are noise, in LR5 I had the colour noise setting at the default 25, if I bump it up to 50 the colour artefacts dissappear, so probably noise not moire NR algorithms don't just affect noise, they also affect wanted parts of the signal so you can't aut...
Posted by Smeggypants on 13/11/2013 - 23:04
K3 resolution
Thats right - just because the noise reduction had some effect on our Penguin head here doesn't automatically mean that it is only noise. I'm not sure really why people refuse to see these particular artifacts as moire. Its not unexpected, given the nature of the surface texture here, and the fa...
Posted by McGregNi on 14/11/2013 - 00:34
K3 resolution
I'm not sure really why people refuse to see these particular artifacts as moire. Because they're not; there would be no difference in that colouring if the image had been taken on a K-5. A K-5 can photograph a rainbow just as well as a K-3 despite it having an AA filter! This was taken with a...
Posted by JAK on 14/11/2013 - 00:44
A K3 test pic - not for critique!
I don't think there is any doubt about the clarity on offer John, due to the 24mp sensor and no AA filter. The jury's out on the noise levels and dynamic range, but I've just picked up a K-3 today and first impressions are very positive. Cheers David
Posted by davidstorm on 11/11/2013 - 23:27
K3 handling
.... I think the increased number of functions where you hold down a button and turn an e-dial is probably a reasonable approach to the number of things they have shoe-horned into the camera and coupled with the main screen it's reasonably intuitive.... Its a big change from the setup thats been in ...
Posted by McGregNi on 12/11/2013 - 19:46
K3 handling
A lot of interesting comments there. Particularly that most find the ergonomics and handling of the K3 an improvement on the K7/K5, the only small issue being placement of the AF button. It must be my 'Kenny Everett' hands that make the K3 a little uncomfortable for me :D Hopefully the new D-BG5 gri...
Posted by Jimbro66 on 13/11/2013 - 11:34
K3 handling
Even putting aside megapixels and IQ aspects, there's plenty new on board the K3 to fully justify the extra cost over the K5II or 's' models. It opens up real new control & feature choices at the top end - something missing for a while with Pentax I think. As such it gives us a lot more to consider ...
Posted by McGregNi on 18/11/2013 - 22:21
K-3 Vs. K-5iis
It seems like many of us have been through similar thought processes to arrive at our decisions over whether to go for a K3 or K5iis (or stick with the K5iis if you've already got one). At the end of the day it comes down to what suits you! The higher pixel count of the K3 gives greater flexibil...
Posted by LennyBloke on 25/11/2013 - 13:41
Upgrading from a K-r
As I said, not everyone shares my views ! :D Steve, I take it then that you would regard the revolutionary new 'aa filter simulator', bought to us for the very first time by Ricoh & Pentax, as a waste of money? :wink:
Posted by McGregNi on 13/11/2013 - 20:08
Upgrading from a K-r
I've shot a lot of images now with cameras that have no AA filter and it really is not a problem. The K-3 solves the dilemma all in one model, this saving the need for endless discussions about which model to buy. I would leave the AA simulator switched off, but I guess some would leave it swi...
Posted by johnriley on 13/11/2013 - 20:13
