All Forum Comments
Comment by davidstorm posted on K5 2S moire-Just for the record at 18/09/2013 - 13:47
Looking at David's Genoa image, what I can say firstly is that it does not seem to have been cleaned up at all in terms of colour noise reduction. Most areas contain significant colour noise patterns, including the OOF zones on the dome and patterned wall to the left, which are swamped in blue & yellow noise. Even the in-focus foreground, the black areas of the sign for example, are covered in a pinky noise effect. The sky is speckled with fine luminance noise also. The yellow brickwork on the left side is riddled with red / yellow & blue noise also.
Take Gary's image at the top of page 2 for example, or the images you posted of the Steam Fair Waltzers a day or two ago - these also exhibit large areas of colour noise to a greater or lesser degree. I did not clean up colour noise on any of the Mediterranean images I posted and this one in particular was quite dark on the original so has had a fair increase to shadows / levels. This obviously impacts on image noise, especially if I haven't cleaned it up! Check out other images on the same Mediterranean thread taken with the K-5iiS and you will see far less noise where the exposure was more accurate, but if you choose to pixel-peep you can find some in any image on here.
We really are in danger of jumping to incorrect conclusions based on little or no knowledge of the facts. All I'm trying to do is to be sensible and explain that what people are seeing is not moire in these images, whereas in the recent examples posted tonight it clearly is moire. Colour noise does not mean moire, luminance noise does not mean moire, jaggies on compressed images does not mean moire. I don't strive to publish, print or display my images for any other reason than photography is my hobby, so I don't pay particular attention to ensuring they will withstand large print sizes or zooming to ridiculous levels on a website forum, so I would fully expect some of them to have colour and luminance noise!
It does annoy me slightly (you may have noticed) when people take images posted on this site as 'evidence' that for example the 'K-5iis is not suitable for architectural images'. Please excuse my bluntness, but 'what a load of codswallop'.
Regards
David
Comment by davidstorm posted on K5 2S moire-Just for the record at 18/09/2013 - 00:33
Here's a is an example of moire using the K52S. It's a crop at 2:1. f4.5 16mm
I think we have to be really careful not to give people the wrong impression and a misunderstanding of what is moire versus compression artefacts. If you zoom right in on Gary Cabstar's image taken with a K-5ii (not iis) at the top of page 2 on this thread, there are lots of jaggies around edges (see guitar especially), but this is not moire either, it is mostly the result of compression.
Regards
David
Comment by davidstorm posted on K5 2S moire-Just for the record at 17/09/2013 - 22:19
Regards
David
Comment by davidstorm posted on Commercial shoot in Doha at 17/09/2013 - 21:58
It is quite clear from your many quotes on this and other subjects that you don't tend to respect other people's opinions.
I've never had any attitude of 'mine is better than yours', I don't think you are in any position to judge this as you don't know me and have never met me, unlike many other members on here who have and who I think will be smiling to themselves when they read your remarks.
I respect Gary Cabstar's decision to buy a K-5ii, but frankly that has nothing to do with it. Do I know what Gary would say if he had a iis and shot thousands of images with it? No I don't, and neither do you.
It's a real shame you don't more often use your obvious intelligence and knowledge to contribute in a positive way more often instead of being so negative. That's just my opinion by the way.
Sincere apologies to Jon for posting this on his thread, I feel bad about it.
Regards
David
Comment by davidstorm posted on Commercial shoot in Doha at 17/09/2013 - 21:36
Notwithstanding that, both the 17-70 and 16-45 comfortably outperform the 18-55.
Regards
David
Comment by davidstorm posted on Pentax 18-55 DA AL with K5 at 17/09/2013 - 21:24
link
If you're meaning on the top of the building in the distance this is actually the tiles on the roof!! WOW even in OOF areas on the K-5iis you can still see the fine details! What a camera!
Also, please point out exactly where in the blue flowers it is on this one (no.2):
link
I really do think you are going off your head and confusing compression artefacts with moire. Don't forget, I've got the full size versions of these and I can tell you categorically there's no moire in them. Perhaps the method of compression I'm using to re-size images is creating a few jagged edges for the pixel peepers out there (usually bicubic sharper, sometimes ordinary bicubic in photoshop), but how you can say that the images in my portfolio have moire is very bizarre indeed.
Regards
David
Comment by davidstorm posted on K5 2S moire-Just for the record at 17/09/2013 - 21:19
You can partly remove moire in Photoshop, which is OK if you only have a couple to do..... bit of a bugger if it's
a 500 shot wedding though
I think it's time you stopped convincing yourself there's an issue and buy yourself a K-5iis to put your mind at rest I don't know how you sleep at night worrying about it.
Cheers
David
Comment by davidstorm posted on K5 2S moire-Just for the record at 17/09/2013 - 20:38
Ah.....but then his wife would probably nab it
Cheers
David
Comment by davidstorm posted on K-01 - First Outing & Images at 17/09/2013 - 20:32
It makes it even more of a pointless camera if no one other than K-5IIS owners can look at the pictures it produces.
Of.... if non K-5IIs owners can see K-5IIs pictures, do they see them differently from K-5IIs owners?
Actually given the hyperbole I think they probably do
Do you ever comment on the image quality of pictures taken on cameras you don't own David?
I don't think I've seen any observations, from anyone in that position, that does not agree with what Shaun has said in this thread and what I've said many times, i.e. the K-5iis consistently produces better images than the K-5 does. I'm not talking about AF, I'm talking about IQ.
I fail to see how anyone can argue with that logic as to do so is not common sense.
Regards
David
Comment by davidstorm posted on Commercial shoot in Doha at 17/09/2013 - 20:27


1. Zoom into any image posted on this Forum or on the Gallery and you will see jagged lines and pixel structure. Images are made up of small squares that are visible when viewed at the appropriate level of zoom. Please explain how you will correct this issue that all photographers on this site are falling foul of.
The No:1 Rule in professional photography is that you don't take
chances That's why in the film era 5"x4" was the minimum
acceptable for architectural photography even though it could
have been risked and done in half the time with a Hasselblad.
A magazine editor working to a deadline would love you if they sent you to get some shots of the piece of sculpture holding the blue flowers in it's natural surroundings and wanted it 800 pixels wide and they got a complaint from the printers
saying they couldn't use it and won't meet the deadline because
the edges were jagged
I don't think the editor would be very impressed with the excuse that you've got the full sized one in front of you and it's OK and it's Photoshops fault and you don't know
how to use any other tools with say Lanzcos algorithmns
The psycology of defending one's purchase.
Regards
David