Archived posting to the Leica Users Group, 2010/11/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I am no expert in this area, and limit my editing to that provided by PS Elements 6.0. However, working with RAW files is simple for me. My editing of the RAW image makes changes that are saved in a sidecar file. After editing in Elements, if I want to start over for a new approach, all I have to do is delete the sidecar file and I have the original RAW file to work from. Why so much discussion of what is done or not done in Photoshop? Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "Tim Gray" <tgray at 125px.com> To: "Leica Users Group" <lug at leica-users.org> Sent: Wednesday, November 24, 2010 11:57 AM Subject: Re: [Leica] LR and PS (was 'AARRGGHHH!!') > On Nov 24, 2010 at 12:33 PM -0500, kyle cassidy on the LUG wrote: >> my understanding of the way that .RAW images work is that it creates an >> invisible "sidecar" file with the extra information in it -- that it's >> still taking up disk space, but you don't see the file size. is that how >> it works? > > Yes, but it's kilobytes, not megabytes. Though it's not invisible in my > experience. Alternately, you can have it store it directly in the > metadata of the image file instead of the .xmp sidecar files. > > I've found that adding layers in a tiff or psd file does increase the file > size. If it's just adjustment layers, the increase is a one time > manageable thing. But each time you add a layer or mask with pixel data, > the file size gets considerably bigger when you are working with big files > to begin with. > > Basically, you could record an instruction that said "Unsharp Mask, 10px, > 8%". And when you load up the file, your image processing program would > automatically run that command on your file and display the result. You > could encode that instruction so that it took up even less than the disk > space that it requires to write "Unsharp Mask, 10px, 8%". Now we are down > to bytes :) > > I just ran exiftool on an older image I have lying around. If you use > the -G option and look in the XMP group, you can find some of the Camera > Raw commands that I used. Presumably LR does something similar, though it > might store them in a central database or sidecar file that is not > directly user accessible - I think Aperture does it that way. > > Sorry for the big flood of info, but the relevant section follows. It's > really just a list of settings to be applied instead of baking those > setting into the image data. > > --- 8< --- > > [XMP] Version : 5.2 > [XMP] Temperature : 2600 > [XMP] Tint : +14 > [XMP] Exposure : 0.00 > [XMP] Shadows : 5 > [XMP] Brightness : +50 > [XMP] Luminance Smoothing : 0 > [XMP] Color Noise Reduction : 25 > [XMP] Chromatic Aberration R : 0 > [XMP] Chromatic Aberration B : 0 > [XMP] Vignette Amount : 0 > [XMP] Shadow Tint : 0 > [XMP] Red Hue : +17 > [XMP] Red Saturation : -28 > [XMP] Green Hue : 0 > [XMP] Green Saturation : 0 > [XMP] Blue Hue : 0 > [XMP] Blue Saturation : 0 > [XMP] Fill Light : 18 > [XMP] Vibrance : +15 > [XMP] Highlight Recovery : 30 > [XMP] Clarity : +14 > [XMP] Defringe : 0 > [XMP] Hue Adjustment Red : 0 > [XMP] Hue Adjustment Orange : 0 > [XMP] Hue Adjustment Yellow : 0 > [XMP] Hue Adjustment Green : 0 > [XMP] Hue Adjustment Aqua : 0 > [XMP] Hue Adjustment Blue : 0 > [XMP] Hue Adjustment Purple : 0 > [XMP] Hue Adjustment Magenta : 0 > [XMP] Saturation Adjustment Red : 0 > [XMP] Saturation Adjustment Orange : 0 > [XMP] Saturation Adjustment Yellow : 0 > [XMP] Saturation Adjustment Green : 0 > [XMP] Saturation Adjustment Aqua : 0 > [XMP] Saturation Adjustment Blue : 0 > [XMP] Saturation Adjustment Purple : 0 > [XMP] Saturation Adjustment Magenta : 0 > [XMP] Luminance Adjustment Red : 0 > [XMP] Luminance Adjustment Orange : 0 > [XMP] Luminance Adjustment Yellow : 0 > [XMP] Luminance Adjustment Green : 0 > [XMP] Luminance Adjustment Aqua : 0 > [XMP] Luminance Adjustment Blue : 0 > [XMP] Luminance Adjustment Purple : 0 > [XMP] Luminance Adjustment Magenta : 0 > [XMP] Split Toning Shadow Hue : 0 > [XMP] Split Toning Shadow Saturation : 0 > [XMP] Split Toning Highlight Hue : 0 > [XMP] Split Toning Highlight Saturation: 0 > [XMP] Split Toning Balance : 0 > [XMP] Parametric Shadows : -43 > [XMP] Parametric Darks : +19 > [XMP] Parametric Lights : +13 > [XMP] Parametric Highlights : -15 > [XMP] Parametric Shadow Split : 25 > [XMP] Parametric Midtone Split : 50 > [XMP] Parametric Highlight Split : 75 > [XMP] Sharpen Radius : +1.0 > [XMP] Sharpen Detail : 25 > [XMP] Sharpen Edge Masking : 0 > [XMP] Post Crop Vignette Amount : -47 > [XMP] Post Crop Vignette Midpoint : 36 > [XMP] Post Crop Vignette Feather : 63 > [XMP] Post Crop Vignette Roundness : 0 > [XMP] Convert To Grayscale : False > [XMP] Tone Curve Name : Medium Contrast > [XMP] Tone Curve : 0, 0, 32, 22, 64, 56, > 128, 128, 192, 196, 255, 255 > [XMP] Camera Profile : ACR 4.4 > [XMP] Camera Profile Digest : > 1D3697FF5A6224E7907C2007BD15EC89 > [XMP] Has Settings : True > [XMP] Has Crop : False > [XMP] Already Applied : False > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > >