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I thought I was going to make it but I'm being sucked in again. Help me guys! - Printable Version +- Opticallimits (https://forum.opticallimits.com) +-- Forum: Forums (https://forum.opticallimits.com/forumdisplay.php?fid=4) +--- Forum: Just Talk (https://forum.opticallimits.com/forumdisplay.php?fid=17) +--- Thread: I thought I was going to make it but I'm being sucked in again. Help me guys! (/showthread.php?tid=1065) |
I thought I was going to make it but I'm being sucked in again. Help me guys! - Brightcolours - 09-14-2015 Quote:The fringing is also present at the left side of the picture.Im not talking about the CA, when I mentioned the purple on the right. I am talking about the purple pattern/blotches in that bush, huge purple blobs, very weird! [ATTACHMENT NOT FOUND] I thought I was going to make it but I'm being sucked in again. Help me guys! - JJ_SO - 09-14-2015 Can't see blotches, sorry. Purple borders on some leaves, but no blotches. I thought I was going to make it but I'm being sucked in again. Help me guys! - Brightcolours - 09-14-2015 If you can't see them on the crop I posted above, your screen has issues (of calibration or just capability nature)... [ATTACHMENT NOT FOUND] I enhanced the issue a little, so you can see where the odd "purple" blotches appear. Letting one of the Nik Color Efex "infrared" settings change the colours, lets the odd purple patches appear in clear blue (for you to see it is there indeed). [ATTACHMENT NOT FOUND] I thought I was going to make it but I'm being sucked in again. Help me guys! - JJ_SO - 09-14-2015 The screen I use in the office is calibrated - but admittedly no high-end wide gamma type. So maybe you consider looking for a problem with your screen ![]() I thought I was going to make it but I'm being sucked in again. Help me guys! - davidmanze - 09-14-2015 Quote:Can't see blotches, sorry. Purple borders on some leaves, but no blotches.They are there all right, vague stains, but I've seen on "The Camera Store" video problems they have had with strange colour effects with the Quatro! I thought I was going to make it but I'm being sucked in again. Help me guys! - JJ_SO - 09-14-2015 Sorry to use your thread for debating Sigma dp 0 or dp 1 stuff. First: I would be mad to use any Sigma camera for video - that's pointless. Second: talking of "blotches", I just want to be sure you mean these stuff here: ![]() At 500% enlargement at f/4 = wide open in the top right corner Please, any of the flaw seekers, deliver a picture with a 21 mm FF lens at f/4 in backlight or better, a 14 mm lens APSC at f/4. I checked my library, but could not find an f/4 at 14 or 21 mm which was absolutely free of purple in the corners - plus, definitively less sharp. Backlit. Top left or right. I'm looking forward to it. Also, to the master of printing these "blotches". ![]() Now, the diff between lens profile ON/OFF, best visible with a DP1 (19 mm), because that's the weakest lens of the old Merrill series: ![]() Full res here Here's ON ![]() And here's OFF ![]() Noticeable and visible - but no big deal. I suspect, it was OFF at the sample picture. What I like is that kind of stuff: ![]() And the 100% crop ![]() Anybody calling it "fake sharpness" is highly welcome to show "true sharpness". I thought I was going to make it but I'm being sucked in again. Help me guys! - Brightcolours - 09-14-2015 Come on already,. posted crops that you can see, right? So look at the original crop, to locate the very weird blotches. I also posted one with the colour made a tad stronger, and one with the colours changed in a standard way, which show the blotches in blue, might your screens be so bad that somehow you don't see the purple blotches (or has a colour blindness). Quote:Sorry to use your thread for debating Sigma dp 0 or dp 1 stuff. First: I would be mad to use any Sigma camera for video - that's pointless.Not only fake sharpeness, also false detail. Don't you see the bad moire and colour moire? I thought I was going to make it but I'm being sucked in again. Help me guys! - JJ_SO - 09-14-2015 Don't you see you're plain incapable to deliver something better wit your stuff? At least I discovered your screenshot. Confusing shadow areas in fog situation with purple blotches is just too stupid to debate any longer. Deliver something better with your Voigtländer and 6D, might be a good way to start to get used to the lens - or just shut up. I thought I was going to make it but I'm being sucked in again. Help me guys! - Brightcolours - 09-14-2015 Ok you are being silly. Indeed no reason to try to have a normal conversation with you. I saw very odd purple blotches, and wonder whether they are from the camera, from Foveon sensors standard, or from the RAW conversion. Since you don't want to shed light on that, never mind. I guess you also do not see the bad moire in the image crop you posted. This image shows similarly odd grey green and grey purple road surface, I suspect it may be the same issue. http://www.sigma-photo.co.jp/english/sgv/dp0_quattro/img/gallery/large/gallery_010.jpg I thought I was going to make it but I'm being sucked in again. Help me guys! - popo - 09-14-2015 I can see the effect described by BC, but only after it was pointed out, so that I knew what to look for. On first glance I didn't see anything with either picture. It is very subtle. Note my monitor is a full sRGB gamut one. I don't know if it would be much different if I used my old AdobeRGB model. I'd describe the effect as like processing when you didn't quite have enough data to start with, or you reduced the data too much somewhere. |