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#1
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Lightroom vs. Apertu Curves
Here's an example of a feature I'm missing in Lightroom.
I use curves extensively, it's the holy grail of exposure editing. If you're not using it, start using it! So here it is in Apertu http://sandman.net/files/aperture_curves.png On a slightly (deliberately) overexposed image from Gotland. See the "Range:" popup? It can be set to "extended", and it looks like this: http://sandman.net/files/aperture_extended.png It shows a larger spectrum of image data than can be displayed on your monitor, i.e. a higher dynamic range. This is only populated if you're shooting with RAW files of course. You then have more bits of image data than JPG or your display can show. Using this, I can move the qhite point *up*: http://sandman.net/files/apterture_extended2.png And you can instantly see the result. You suddenly have more image data in the monitor-visible spectrum! Amazing, isn't it? Now, this may have been a poor image to show this with since we don't have all that much *useful* data in the upper range either way. But it's super useful for a lot of bright images to get more data from the file. Unfortunately, Lightroom doesn't seem to support this. Default it shows you a poor-mans version of curves: http://sandman.net/files/lightroom_poorcurves.png And at first I wondered what the hell this curve was on about, it had these stupid limits and regions. So you have to click the bottom right icon to get to the real curves: http://sandman.net/files/lightroom_curves.png But, alas, no extended range here (or with the poorer version of curves) so no way - as far as I can make out - to actually access all that glorious image data from within Lightroom. Anyone knows if I've missed something? -- Sandman[.net] |
#2
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Lightroom vs. Apertu Curves
On 2014-08-11 14:17:06 +0000, Sandman said:
Here's an example of a feature I'm missing in Lightroom. I use curves extensively, it's the holy grail of exposure editing. If you're not using it, start using it! So here it is in Apertu http://sandman.net/files/aperture_curves.png On a slightly (deliberately) overexposed image from Gotland. See the "Range:" popup? It can be set to "extended", and it looks like this: http://sandman.net/files/aperture_extended.png It shows a larger spectrum of image data than can be displayed on your monitor, i.e. a higher dynamic range. This is only populated if you're shooting with RAW files of course. You then have more bits of image data than JPG or your display can show. Using this, I can move the qhite point *up*: I am not going to get into a major Aperture vs. Lightroom argument here, but why on earth would you want to move the white point "up"? All that is going to do is clip the data on the right. http://sandman.net/files/apterture_extended2.png And you can instantly see the result. You suddenly have more image data in the monitor-visible spectrum! Amazing, isn't it? Now, this may have been a poor image to show this with since we don't have all that much *useful* data in the upper range either way. But it's super useful for a lot of bright images to get more data from the file. I can see that this might be beneficial in an image with deep shadows and you might want to artificially stretch the DR, but with the example you have used all you achieve is clipping. There is no additional image data visible to me, and I would guess anybody else. Unfortunately, Lightroom doesn't seem to support this. Default it shows you a poor-mans version of curves: http://sandman.net/files/lightroom_poorcurves.png And at first I wondered what the hell this curve was on about, it had these stupid limits and regions. So you have to click the bottom right icon to get to the real curves: http://sandman.net/files/lightroom_curves.png But, alas, no extended range here (or with the poorer version of curves) so no way - as far as I can make out - to actually access all that glorious image data from within Lightroom. Anyone knows if I've missed something? From what I can see you are calling the Lightroom implementation of a Tone Curves adjustment a "poorer version of curves" because it doesn't have this extended feature. However, it doesn't really do what you claim on the right of the histogram where it leads to clipping. It can help in the shadows and mid-tones, but for the most part there are other tools which can deal with those issues. They are two apps with similar goals, but different implementation, don't expect them to mirror each other in every way. They won't. -- Regards, Savageduck |
#3
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Lightroom vs. Apertu Curves
In article 2014081108430694198-savageduck1@REMOVESPAMmecom, Savageduck wrote:
Sandman: Here's an example of a feature I'm missing in Lightroom. I use curves extensively, it's the holy grail of exposure editing. If you're not using it, start using it! So here it is in Apertu http://sandman.net/files/aperture_curves.png On a slightly (deliberately) overexposed image from Gotland. See the "Range:" popup? It can be set to "extended", and it looks like this: http://sandman.net/files/aperture_extended.png It shows a larger spectrum of image data than can be displayed on your monitor, i.e. a higher dynamic range. This is only populated if you're shooting with RAW files of course. You then have more bits of image data than JPG or your display can show. Using this, I can move the qhite point *up*: I am not going to get into a major Aperture vs. Lightroom argument here, but why on earth would you want to move the white point "up"? All that is going to do is clip the data on the right. Uhm, what I meant was to move the white point to the right, i.e. increase it, to span a greater range, hence the "up". Might have been a bit ambigous yes, but the screenshots showed what I meant. Sandman: http://sandman.net/files/apterture_extended2.png And you can instantly see the result. You suddenly have more image data in the monitor-visible spectrum! Amazing, isn't it? Now, this may have been a poor image to show this with since we don't have all that much *useful* data in the upper range either way. But it's super useful for a lot of bright images to get more data from the file. I can see that this might be beneficial in an image with deep shadows and you might want to artificially stretch the DR, but with the example you have used all you achieve is clipping. There is no additional image data visible to me, and I would guess anybody else. Huh? Look again, when moving the whitepoint to the right, I get *more* data into the visible range, and you see the horizon, which was blocked out in the earlier image. More data, not blocked. The opposite of blocked. Sandman: Unfortunately, Lightroom doesn't seem to support this. Default it shows you a poor-mans version of curves: http://sandman.net/files/lightroom_poorcurves.png And at first I wondered what the hell this curve was on about, it had these stupid limits and regions. So you have to click the bottom right icon to get to the real curves: http://sandman.net/files/lightroom_curves.png But, alas, no extended range here (or with the poorer version of curves) so no way - as far as I can make out - to actually access all that glorious image data from within Lightroom. Anyone knows if I've missed something? From what I can see you are calling the Lightroom implementation of a Tone Curves adjustment a "poorer version of curves" because it doesn't have this extended feature. No, limited feature, where it sets limit on how much you can edit the curve. It's like a "Curve for beginners" with safe limits so you won't ruin your image too much. However, it doesn't really do what you claim on the right of the histogram where it leads to clipping. It can help in the shadows and mid-tones, but for the most part there are other tools which can deal with those issues. They are two apps with similar goals, but different implementation, don't expect them to mirror each other in every way. They won't. All I am saying is that Aperture has a way to access image data that is outside the 8 bit scope of your monitor, like any HDR tool also can. The Sony A7 has 11 bit color depth information in the raw file, which your monitor can't show, so compressing that dynamic range down to 8 bit allows for that, which Aperture supports in its Curbes implementation, but as far as I can make out, Lightroom has no way for me to access that data. -- Sandman[.net] |
#4
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Lightroom vs. Apertu Curves
On 11 Aug 2014 14:17:06 GMT, Sandman wrote:
Here's an example of a feature I'm missing in Lightroom. I use curves extensively, it's the holy grail of exposure editing. If you're not using it, start using it! So here it is in Apertu http://sandman.net/files/aperture_curves.png On a slightly (deliberately) overexposed image from Gotland. See the "Range:" popup? It can be set to "extended", and it looks like this: http://sandman.net/files/aperture_extended.png It shows a larger spectrum of image data than can be displayed on your monitor, i.e. a higher dynamic range. This is only populated if you're shooting with RAW files of course. You then have more bits of image data than JPG or your display can show. Using this, I can move the qhite point *up*: http://sandman.net/files/apterture_extended2.png And you can instantly see the result. You suddenly have more image data in the monitor-visible spectrum! Amazing, isn't it? Now, this may have been a poor image to show this with since we don't have all that much *useful* data in the upper range either way. But it's super useful for a lot of bright images to get more data from the file. Unfortunately, Lightroom doesn't seem to support this. Default it shows you a poor-mans version of curves: http://sandman.net/files/lightroom_poorcurves.png And at first I wondered what the hell this curve was on about, it had these stupid limits and regions. So you have to click the bottom right icon to get to the real curves: http://sandman.net/files/lightroom_curves.png But, alas, no extended range here (or with the poorer version of curves) so no way - as far as I can make out - to actually access all that glorious image data from within Lightroom. Anyone knows if I've missed something? Before I comment, I would like to try another approach. Can you post a copy of the original in an editable form? -- Regards, Eric Stevens |
#5
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Lightroom vs. Apertu Curves
In article , Eric Stevens wrote:
But, alas, no extended range here (or with the poorer version of curves) so no way - as far as I can make out - to actually access all that glorious image data from within Lightroom. Anyone knows if I've missed something? Before I comment, I would like to try another approach. Can you post a copy of the original in an editable form? Certainly. http://sandman.net/files/DSC01476.ARW -- Sandman[.net] |
#6
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Lightroom vs. Apertu Curves
On 2014-08-12 11:47:45 +0000, Sandman said:
In article , Eric Stevens wrote: But, alas, no extended range here (or with the poorer version of curves) so no way - as far as I can make out - to actually access all that glorious image data from within Lightroom. Anyone knows if I've missed something? Before I comment, I would like to try another approach. Can you post a copy of the original in an editable form? Certainly. http://sandman.net/files/DSC01476.ARW After looking at that RAW file I can see the problem came from a need for a -4 Grad ND filter. Shooting wide open at f/1.8 & ISO 100 didn’t help. It looks as if you metered on the tree or roof in the center, and that led to those exposure settings and the blown highlights. If anything this might have been a case for HDR, or at least some exposure bracketing to play with. There is no getting away from the serious clipping. You were correct there was data further to the right in the histogram, but it was useless as the clipping had mostly blanketed it. I tried a rendition and came up with this: https://dl.dropboxusercontent.com/u/1295663/DSC01476-Edit-1.jpg -- Regards, Savageduck |
#7
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Lightroom vs. Apertu Curves
On 2014-08-12 13:38:07 +0000, Savageduck said:
On 2014-08-12 11:47:45 +0000, Sandman said: In article , Eric Stevens wrote: But, alas, no extended range here (or with the poorer version of curves) so no way - as far as I can make out - to actually access all that glorious image data from within Lightroom. Anyone knows if I've missed something? Before I comment, I would like to try another approach. Can you post a copy of the original in an editable form? Certainly. http://sandman.net/files/DSC01476.ARW After looking at that RAW file I can see the problem came from a need for a -4 Grad ND filter. Shooting wide open at f/1.8 & ISO 100 didn’t help. It looks as if you metered on the tree or roof in the center, and that led to those exposure settings and the blown highlights. If anything this might have been a case for HDR, or at least some exposure bracketing to play with. There is no getting away from the serious clipping. You were correct there was data further to the right in the histogram, but it was useless as the clipping had mostly blanketed it. I tried a rendition and came up with this: https://dl.dropboxusercontent.com/u/1295663/DSC01476-Edit-1.jpg ....or perhaps this one; https://dl.dropboxusercontent.com/u/1295663/DSC01476-Edit2-1.jpg -- Regards, Savageduck |
#8
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Lightroom vs. Apertu Curves
In article 201408120638074435-savageduck1@REMOVESPAMmecom, Savageduck wrote:
On 2014-08-12 11:47:45 +0000, Sandman said: Sandman: But, alas, no extended range here (or with the poorer version of curves) so no way - as far as I can make out - to actually access all that glorious image data from within Lightroom. Anyone knows if I've missed something? Eric Stevens: Before I comment, I would like to try another approach. Can you post a copy of the original in an editable form? Sandman: Certainly. http://sandman.net/files/DSC01476.ARW After looking at that RAW file I can see the problem came from a need for a -4 Grad ND filter. Shooting wide open at f/1.8 & ISO 100 didn’t help. It looks as if you metered on the tree or roof in the center, and that led to those exposure settings and the blown highlights. If anything this might have been a case for HDR, or at least some exposure bracketing to play with. There is no getting away from the serious clipping. You were correct there was data further to the right in the histogram, but it was useless as the clipping had mostly blanketed it. The topic is not this image and what is truly clipped from it or not. The topic is accessing image data that is outside the 8 bit spectrum of the Lightroom histogram, which can be done in Aperture. This was not a thread about how I save this one image, the image is irrelevant to the topic and was just an example. You're focusing on the wrong thing. There is data in that image not represented by the Lightroom histogram. Or the Aperture histogram. There is a method in Aperture to *access* that data by shrinking the 11 bit actual histogram to fit a 8 bit histogram. As far as I can make out, there is no way to do this in Lightroom. Correct? -- Sandman[.net] |
#9
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Lightroom vs. Apertu Curves
Sandman wrote:
Here's an example of a feature I'm missing in Lightroom. I use curves extensively, it's the holy grail of exposure editing. If you're not using it, start using it! A curves tool does not edit exposure, it changes the tone mapping. You are only moving points between the maximum white and the maximum black in relation to each other. What you want to adjust, for the purposes stated, are brightness and contrast. A 'contrast' adjustment changes the data's range of darkness and brightness. A 'brightness' adjustment moves the range toward one end or the other of the scale. A curves tool doesn't move the range nor does it compress or expand it. Curves moves a portion of the range in one direction or the other, but cannot go past either end. Areas within the range are compress and expanded, but not the range. When done with a RAW converter brightness and contrast adjustments can be dramatic in effect. If you try it in an editor with the RGB image produced by the converter the effect will be significantly reduced, and in particular if the image has been formatted and saved as a JPEG. So here it is in Apertu http://sandman.net/files/aperture_curves.png On a slightly (deliberately) overexposed image from Gotland. See the "Range:" popup? It can be set to "extended", and it looks like this: http://sandman.net/files/aperture_extended.png It shows a larger spectrum of image data than can be displayed on your monitor, i.e. a higher dynamic range. This is only populated if you're shooting with RAW files of course. You then have more bits of image data than JPG or your display can show. Using this, I can move the qhite point *up*: It is shot directly into the sun! There is no way to avoid some areas of clipped whites. When processing the RAW image you can use brightness and contrast to set the points in the raw sensor data that become absolute white (255) and absolute black (0) in the RGB image (whether that is saved as a JPEG or something else). When editing the RGB image you will never have access to whatever the raw sensor had that was whiter or blacker. It's gone at that point. Other formats will have greater dynamic range than a JPEG, and at least some of the shadows can be pulled up. Anyone knows if I've missed something? A bare bones realization of what each program is doing. And a misconception of what a curves tool does. -- Floyd L. Davidson http://www.apaflo.com/ Ukpeagvik (Barrow, Alaska) |
#10
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Lightroom vs. Apertu Curves
In article , Floyd L. Davidson wrote:
Sandman: Here's an example of a feature I'm missing in Lightroom. I use curves extensively, it's the holy grail of exposure editing. If you're not using it, start using it! A curves tool does not edit exposure Captain literal strikes again. What you want to adjust, for the purposes stated, are brightness and contrast. Then you didn't understand the purpose stated. No surprise there, Floyd. It shows a larger spectrum of image data than can be displayed on your monitor, i.e. a higher dynamic range. This is only populated if you're shooting with RAW files of course. You then have more bits of image data than JPG or your display can show. Using this, I can move the qhite point *up*: It is shot directly into the sun! There is no way to avoid some areas of clipped whites. Good input, if the question was how to avoid data clipping when taking pictures directly into the sun. When processing the RAW image you can use brightness and contrast to set the points in the raw sensor data that become absolute white (255) and absolute black (0) in the RGB image (whether that is saved as a JPEG or something else). When editing the RGB image you will never have access to whatever the raw sensor had that was whiter or blacker. It's gone at that point. Captain Obvious strikes as well. Other formats will have greater dynamic range than a JPEG, and at least some of the shadows can be pulled up. You don't say, Floyd? You have any more basic image knowledge to share that everyone already knows about? Sandman: Anyone knows if I've missed something? A bare bones realization of what each program is doing. And a misconception of what a curves tool does. So basically you understood nothing. Again, no surprise there. -- Sandman[.net] |
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