Critique Welcomed Foggy
- Thread starter Ivar Dahl-Larsen
- Start date
Pete Askew
Admin
Nice. There's that pattern again though. Is this shot through a window?
Ivar Dahl-Larsen
Well-Known Member
No Pete, it is the same as Julian mentioned previously. I have tried to find out how it occurs, but so far in vain. I know there has been this trouble before during the process in some ways! Banding from the sensors when lifting the exposure in processing says the Cornywall man. But I have a few doubts albeit he may be right. But this here has not been lifted exposure wise. There must be more to it. I'll go through my process step by step to find out. Can't have it like this. I may have to go back to film
It seems to occur when skies are involved, very strange. May also have something to do with anti aliasing filter which I suspect?
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Pete Askew
Admin
It looks like a sensor pattern to me. Antialiasing just adds a touch of blur. Which camera? I thought you were using Fuji which I don't think has one anyway does it?
The reason I asked about windows was that some have antireflective coatings that can produce patterns.
The reason I asked about windows was that some have antireflective coatings that can produce patterns.
Julian de'Courcy
Well-Known Member
Nah. its that fence they've secured Ivar behind
Julian de'Courcy
Well-Known Member
A fine pattern Ivar and boat houses and land. The fog as always gives that enigmatic feel which is often a pleasant way to hide the real world.
Beth Carter
Well-Known Member
do your images have that pattern before processing? if it only appears later then what software are you using? i've never seen anything like this from my fujis. i use lightroom, but tend to be a little more conservative with my processing.
Ivar Dahl-Larsen
Well-Known Member
Many above here with good reasoning and I'll try to answer them all as best I can. Pete, anti aliasing filter is not found in Fuji, you are right, but I meant because of that, that banding may occur at times. Beth says it never happens to hers and I believe that. So in this respect, as much as I hate to admit it, I am doing something wrong, since it is not there before processing. Elimination method shall be used here. There are times I use NIK and different filters as well as sharpening and I kind of thought the problem could be there, but no. I use an older photoshop 5,8 and that one has not made any problems for me unless I experiment slightly with curves and shadows and highlights, which actually are the only ones I use. It is all weird. But I'll get to the bottom of this. I also have to go back to my raw converter and again look at my parameters. I have an older version of lightroom, but I have not familiarised myself with it much.
Alas, Julian may have come up with the right answer. It is that fence I never really saw to keep me at bay so as to hide me and to keep me away from the real world.
Thank you Julian for your understanding and from your own experience in the matter from where you have absorbed such a notion I gather. Always nice to share common experiences Here are two samples where I have only added curves mildly, shadows and highlights, brightness and contrast as well as unsharp mask at 50% It now seems to be gone on even a large A3+ Have a look.
and here
I still have not found the reason for why it happened before, but I may have added a little too much of sharpening and therefore produced banding. There still is a slight pattern I feel, but now I feel I see ghosts in broad daylight. If so, please help, then there is the sharpening.
Alas, Julian may have come up with the right answer. It is that fence I never really saw to keep me at bay so as to hide me and to keep me away from the real world.
Thank you Julian for your understanding and from your own experience in the matter from where you have absorbed such a notion I gather. Always nice to share common experiences Here are two samples where I have only added curves mildly, shadows and highlights, brightness and contrast as well as unsharp mask at 50% It now seems to be gone on even a large A3+ Have a look.and here
I still have not found the reason for why it happened before, but I may have added a little too much of sharpening and therefore produced banding. There still is a slight pattern I feel, but now I feel I see ghosts in broad daylight. If so, please help, then there is the sharpening.
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Pete Askew
Admin
Yes, I can still see the pattern as well.
Julian de'Courcy
Well-Known Member
yes lots of pattern again Ivar. I still think the likely cause is recovering and image to much in processing. If it is sensor banding, it is usually seen on under exposed images or parts of the image that are under exposed and then the exposure corrected in processing via levels curves or whatever. What is intriguing in what you present though is the uniformity. On a bayer sensor it takes on a banding rather this precise grid array. Though although not familiar with the xtrans sensor I wonder if this type of banding is because of the xtrans sensor.
One way to find out would be, in a similar lighting condition to take an image with your usual exposure setting , one some minus ev and some well over exposed. The over exposed shots aught not to show sensor banding.
The Canon 5Dmk2 has the problem of banding in shadows, the answer was in those situations to over expose. With Raw files it is easy to bring back the highlights so this solved that problem. The sensor banding brought the saying TTR to To The Right, when applied was to make sure the histogram was pushed well to the right side, to avoid these issues.
One way to find out would be, in a similar lighting condition to take an image with your usual exposure setting , one some minus ev and some well over exposed. The over exposed shots aught not to show sensor banding.
The Canon 5Dmk2 has the problem of banding in shadows, the answer was in those situations to over expose. With Raw files it is easy to bring back the highlights so this solved that problem. The sensor banding brought the saying TTR to To The Right, when applied was to make sure the histogram was pushed well to the right side, to avoid these issues.
