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digitaldog

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Posts posted by digitaldog

    Soft Proofing confusion - need to relearn all my color management

    in The Digital Darkroom: Process, Technique & Printing

    Posted

    You should always test output using good color reference images designed for that task. The color reference images RGB values are such that they are set for output and are editing and display agnostic. Test the output this way and examine for the same color issues so we know it's not your image-specific issues causing the problems:

    http://www.digitaldog.net/files/2014PrinterTestFileFlat.tif.zip

    This and other such documents can also be downloaded at http://www.digitaldog.net/

    Next: check that the difference isn't related to a GPU issue by examining with it disabled in both products.

    Then examine if any of the profiles are V4 spec instead of V2. Not all V4 profiles play well with all apps and are unnecessary anyway.
    Still a big mismatch between the apps?

    Apple vs PC for Photo Editing

    in The Digital Darkroom: Process, Technique & Printing

    Posted

    Impossible to double profile on a Mac with Adobe products. Some software products are using a private Apple (undocumented) SPI called kPMApplicationColorMatching which you see in Photoshop and Lightroom and the Adobe Color Print Utility. When you set Application Manages Color, the area of the driver that controls Colorsync will alter the radio buttons such they are grayed out. X-Rite’s i1Profiler has also implemented this SPI.

    Apple vs PC for Photo Editing

    in The Digital Darkroom: Process, Technique & Printing

    Posted

    54 minutes ago, paddler4 said:

    GPUs are only one issue. The web was full of people complaining about initial compatibility problems with at least 4 MacOS updates.

    People complain about all kinds of general OS issues. GPU, indeed, is only one issue. But for Adobe apps, it's a major area of complaint, as outlined and shown using one metric someone suggested: (but search <adobe photoshop problems). Or as outlined by Adobe users on their forums. As for either platform and perfection, with or without respect to Adobe applications as the OP asked about: "Have no fear of perfection-you'll never reach it." -Salvador Dali

    Apple vs PC for Photo Editing

    in The Digital Darkroom: Process, Technique & Printing

    Posted

    7 minutes ago, paddler4 said:

    I don't care either, but search <adobe photoshop problems mac os> without quotes. Not a short list.

    Yes, there are many older OSs and hardware that will not run or run wonky. This doesn't alter the facts about GPUs, the issues on far more Windows machines than Macs, and the fact that GPUs are now more critical and used more than ever before. And from someone who gets a heads up on what's coming, more and more routines will move to the GPU on Adobe apps. For anyone who is looking for speed and stability in a new machine running Adobe apps, the case has been made, go with whatever hardware you desire and let us know how it all goes. 

    Apple vs PC for Photo Editing

    in The Digital Darkroom: Process, Technique & Printing

    Posted

    1 minute ago, paddler4 said:

    Buying a brand-name GPU that meets their specs is all that is needed. 

    Until they (Adobe) update their software, which we know happens often (especially now with Adobe Camera Raw; they have a more aggressive update process due to camera support), then all hell can (and does) break loose. But Adobe tests not only current OSs while doing pre-releases but also betas and pre-releases of Apple's OS, which controls their GPUs. 
    Look, I don't care if someone buys a new Mac or Windows. What I can tell folks here, as someone doing both Adobe support and Adobe beta testing, is that GPU is an ongoing issue for Windows users and almost never one for Mac users. But again, anyone who wants to check this can see it on the Adobe support forums. 

    Apple vs PC for Photo Editing

    in The Digital Darkroom: Process, Technique & Printing

    Posted

    It's far, far more than just Neutral Filters. Hence, this is the reason Adobe provides a lot of settings (including OFF) for GPU in Photoshop, Adobe Camera Raw, and Lightroom Classic. It's been a big mess for lots of Windows users, as one can track just on their forums. And it's not just a GPU but the drivers too, again all handled by Apple within their OS updates.
    GPU, in terms of performance, is super important for Adobe customers. It used to be total RAM, and that is still important. But GPU is a big one these days.  So buyers of hardware should examine the role of the CPU and GPU and how they interact, along with the software drivers that control them. IF the use of Adobe products is important, homework in terms of GPU spec's and support is super critical. 

    Apple vs PC for Photo Editing

    in The Digital Darkroom: Process, Technique & Printing

    Posted · Edited by digitaldog

    Look at the many GPU issues on Windows** (the wild west) and you might consider that the “OS” and more is at stake here with LR and PS. Apple controls GPU drivers and few of them at the OS level. They control which GPUs are built into their hardware. Windows? Nope.

     

    ** do a search here and on the LR and Camera Raw forums:

    https://community.adobe.com/t5/photoshop-ecosystem/ct-p/ct-photoshop?page=1&sort=latest_replies&lang=all&tabid=all

    Confusing LR Classic Catalog Hierarchy

    in The Digital Darkroom: Process, Technique & Printing

    Posted

    The catalog is just like the card catalog in a library: it points you to images where they reside. 
    The three files you list all work together and are 'linked' to provide differing functions; Preivew.Lrdata contains the previews. LRdata is the catalog itself. You could delete the preview doc and regenerate them if you had to. Not suggesting you do, only that it is linked and 'built' from the LRdata catalog. Helper.LRdata is a cached data to help performance; again, leave it alone as it is part of the catalog files that work together.  V12 indicates the catalog was updated in version 12 from an older catalog. And there is no reason you can't delete a group of older catalogs, especially backups** You can place your catalog files together anywhere you wish. I have mine on an external drive dedicated to just the catalog and all my images. IOW, none of this has to be in the Pictures folder. 
    ** LR's backup schema is lame and only backs up the catalog files, not your images. I never use it! I back up everything using a dedicated backup application. But you can delete older LR backups if you wish. 

    Choosing Settings/Factors to Consider When Ordering Prints

    in The Digital Darkroom: Process, Technique & Printing

    Posted · Edited by digitaldog

    41 minutes ago, AlanKlein said:

    300ppi seems about right.  🙂

    "All generalizations are false, including this one." -Mark Twain
    And no, it is not right here as well:
    https://forum.luminous-landscape.com/index.php?topic=136760.msg1194660#msg1194660

    But this is a good start for the OP:

    http://www.gballard.net/psd/sharpening.html

    https://www.digitalphotopro.com/technique/photography-workflow/the-right-resolution/

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