I finally have started using my camera on Manual and was wondering if I could get some feedback on this shot.
Thanks in advance
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KarlosDaJackal Goldmember 1,740 posts Likes: 2 Joined Jul 2008 Location: Dublin, Ireland More info | Jul 15, 2008 07:23 | #1 I finally have started using my camera on Manual and was wondering if I could get some feedback on this shot.
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PMatthes Senior Member 598 posts Joined May 2008 Location: Chicago-ish, IL More info | Jul 15, 2008 12:56 | #2 I like the lighting... -Pete
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Robert_Lay Cream of the Crop 7,546 posts Joined Jul 2005 Location: Spotsylvania Co., VA More info | Jul 15, 2008 22:21 | #3 The left eye is too dark. As a result, the catchlight in that eye seems out of place. So, in my opinion the image is rendered too dark here. Bob
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Irreverent Senior Member 393 posts Joined Jul 2008 Location: Devon, UK More info | Jul 15, 2008 23:43 | #4 I'd agree.
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KarlosDaJackal THREAD STARTER Goldmember 1,740 posts Likes: 2 Joined Jul 2008 Location: Dublin, Ireland More info | Thanks for the feedback. My Website
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KarlosDaJackal THREAD STARTER Goldmember 1,740 posts Likes: 2 Joined Jul 2008 Location: Dublin, Ireland More info | New Photo
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Irreverent Senior Member 393 posts Joined Jul 2008 Location: Devon, UK More info | Jul 16, 2008 14:17 | #7 don't you have a 1.8 lens?
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Robert_Lay Cream of the Crop 7,546 posts Joined Jul 2005 Location: Spotsylvania Co., VA More info | Jul 16, 2008 15:57 | #8 Adjusted using PSCS3 Image>Adjustments>Levels. Bob
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Irreverent Senior Member 393 posts Joined Jul 2008 Location: Devon, UK More info | Jul 16, 2008 18:01 | #9 Bob, as I'm sure you already suspect, I believe the very brief reason for the posterisation is because of the fact that so many potential bits in the image have not been utilised. Assuming an average modern camera with a 12 bit sensor (capable of capturing 4096 discrete tonal levels) and assuming that the average RAW can accommodate a dynamic range of approx 5-6 stops, and knowing that of those 4096 steps available, 2048 are taken by the first highlight stop, 1024 for the 2nd stop, and so on down until the lowest exposure stop in the image is assigned only 64 or 128 discrete values to represent its range of tones. Given this image was shot in what would look like alsmot exlusively the lower 2 stops, we're probably talking about something like 200 levels or so to describe the entire image. That's worse than 8 bit greyscale. With that in mind it's hardly surprising that when you try to bring out some detail with fill light, shadows/highlights, or curves, you are going to encounter this posterisation - there's simply not enough tonal variety in the image to create the smooth gradations from one tone to the next.
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Robert_Lay Cream of the Crop 7,546 posts Joined Jul 2005 Location: Spotsylvania Co., VA More info | Jul 16, 2008 20:52 | #10 Irreverent wrote in post #5924243 Bob, as I'm sure you already suspect, I believe the very brief reason for the posterisation is because of the fact that so many potential bits in the image have not been utilised. Assuming an average modern camera with a 12 bit sensor (capable of capturing 4096 discrete tonal levels) and assuming that the average RAW can accommodate a dynamic range of approx 5-6 stops, and knowing that of those 4096 steps available, 2048 are taken by the first highlight stop, 1024 for the 2nd stop, and so on down until the lowest exposure stop in the image is assigned only 64 or 128 discrete values to represent its range of tones. Given this image was shot in what would look like alsmot exlusively the lower 2 stops, we're probably talking about something like 200 levels or so to describe the entire image. That's worse than 8 bit greyscale. With that in mind it's hardly surprising that when you try to bring out some detail with fill light, shadows/highlights, or curves, you are going to encounter this posterisation - there's simply not enough tonal variety in the image to create the smooth gradations from one tone to the next. Yes, you are preaching to the choir Bob
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KarlosDaJackal THREAD STARTER Goldmember 1,740 posts Likes: 2 Joined Jul 2008 Location: Dublin, Ireland More info | Robert, My Website
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Robert_Lay Cream of the Crop 7,546 posts Joined Jul 2005 Location: Spotsylvania Co., VA More info | Jul 17, 2008 06:15 | #12 KarlosDaJackal wrote in post #5926786 Robert, I know your trying to help, but you have not done that by post processing the image and posting it, as stated before I have not post processed it myself, because I want to discuss the bit before it comes out of the camera. Yes I could have done what you did with the image using the GIMP and I have done it plenty of times in the past, but I don't want to be stuck in that loop. Also correct me if I'm wrong but if I don't have "image editing ok" enabled you shouldn't be editing my image, correct? Anyway all the non-PP related comments from everyone have been useful, and I'm going back over the reading material I have about metering and exposure. I am extremely sorry, Karlos - For some reason I failed to check the Editing Permission. I apologize and have edited my post accordingly. Bob
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yogestee "my posts can be a little colourful" More info | Something funny going on here.. There is no EXIF data available for these images.. EXIF data is often erased by post processing.. Jurgen
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KarlosDaJackal THREAD STARTER Goldmember 1,740 posts Likes: 2 Joined Jul 2008 Location: Dublin, Ireland More info | Jul 17, 2008 07:56 | #14 yogestee wrote in post #5927737 Something funny going on here.. There is no EXIF data available for these images.. EXIF data is often erased by post processing.. nothing funny, when you export from RAW to Anything, you get the choice to include EXIF or not, depending on the format. My Website
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KarlosDaJackal THREAD STARTER Goldmember 1,740 posts Likes: 2 Joined Jul 2008 Location: Dublin, Ireland More info | Jul 17, 2008 08:28 | #15 Robert_Lay wrote in post #5927383 I am extremely sorry, Karlos - For some reason I failed to check the Editing Permission. I apologize and have edited my post accordingly. No harm done Robert My Website
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