Mark D Segal

Mark D Segal

Toronto, ON

Mark has been making photographs for the past six decades and started adopting a digital workflow in 1999 first with scanning film, then going fully digital in 2004. He has worked with a considerable range of software, equipment, materials and techni...
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Epson Legacy Baryta II Paper

Epson Legacy Baryta II Paper

Two Papers, Two Printers Readers will recall the unfortunate demise of a number of inkjet papers from several paper companies, all having the common characteristics of being luster-like paper with a baryta component. Epson is one such company, which sought to replace...

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Hahnemuehle Torchon Paper Review

Hahnemuehle Torchon Paper Review

Shortly before last Christmas, I received a greeting card saying that it was printed on Hahnemuehle Torchon paper. I really liked the texture and feel of the paper, as well as the photo printed on it, and I realized that though I...

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  • Mark D Segal
    Mark D Segal
    Silver Member
    Posts: 763
    Local sharpening in ACR & LR
    on: March 25, 2023 at 6:51 pm

    <<Did you happen to test with global amount at some positive value (+25, +50, or +75, for example), and then see what happens at the negative local values?>>
    Yes – I have been using a combination of Negative Texture and Negative Sharpening to smooth the appearance of skies (isolated with masking) in photos made from digitizing colour negatives. Both tools do a decent job of it, regardless that the whole photo is sharpened before applying the masking. Depending on the photo, it also makes sense to only sharpen the parts one wants sharpened and then apply negative sharpening and texture to the sky.

    Mark D Segal Author: "Scanning Workflows with SilverFast 8, SilverFast HDR, Adobe Photoshop Lightroom and Adobe Photoshop". Please check the PhotoPXL Store for availability.

    Mark D Segal
    Mark D Segal
    Silver Member
    Posts: 763
    Re: Local sharpening in ACR & LR
    Reply #1 on: March 24, 2023 at 6:56 pm

    I’m getting very tiny and feint font typing here, don’t know why.
    Anyhow, very interesting post Jeff, thanks. I have a follow-up question about the basics of how local sharpening interacts with the detail panel in general. It has been my understanding that when one triggers an adjustment in a local area using the tools in the masking panel, the adjustment made is some percentage of the power of the underlying setting in the detail panel. For for example with sharpening, if I were to have the Amount set at 40, the Sharpening tool in the masking panel would at its maximum add on something up to no more than 40, i.e. point for point it would do less sharpening than the movement of the Amount slider would do if working in the detail panel without a mask. Is this correct?

    Nope…the local adjustment increases or decreases the settings in the same units that the global settings occur (with the exception noted herein) So, if you had a setting of 40 in the global and you used a setting of +20, that would be the same as having the setting be 60 in those areas. Similarly, if you used a -20, the resulting settings in the global +40 would be 20.

    It should also be noted that the local controls are based on and relate to the same global controls but they are not EXACTLY the same in some of the channels of adjustment. I used to have an explanation of that in an email from Eric or Those, but I can’t recall what the exact differences are. But for all practical purposes, the differences are irrelevant to the normal user.

    Interesting, thanks for the clarification Jeff.

    Mark D Segal Author: "Scanning Workflows with SilverFast 8, SilverFast HDR, Adobe Photoshop Lightroom and Adobe Photoshop". Please check the PhotoPXL Store for availability.

    Mark D Segal
    Mark D Segal
    Silver Member
    Posts: 763
    Re: Local sharpening in ACR & LR
    Reply #2 on: March 24, 2023 at 9:08 am

    Oh – and as for the “other site” – me too – anyone who wants to read anything I have to say about digital imaging since the time PhotoPXL was created will need to come here.

    Mark D Segal Author: "Scanning Workflows with SilverFast 8, SilverFast HDR, Adobe Photoshop Lightroom and Adobe Photoshop". Please check the PhotoPXL Store for availability.

    • This reply was modified 6 days, 17 hours ago by Mark D Segal.
    Mark D Segal
    Mark D Segal
    Silver Member
    Posts: 763
    Re: Local sharpening in ACR & LR
    Reply #3 on: March 24, 2023 at 9:05 am

    I’m getting very tiny and feint font typing here, don’t know why.
    Anyhow, very interesting post Jeff, thanks. I have a follow-up question about the basics of how local sharpening interacts with the detail panel in general. It has been my understanding that when one triggers an adjustment in a local area using the tools in the masking panel, the adjustment made is some percentage of the power of the underlying setting in the detail panel. For for example with sharpening, if I were to have the Amount set at 40, the Sharpening tool in the masking panel would at its maximum add on something up to no more than 40, i.e. point for point it would do less sharpening than the movement of the Amount slider would do if working in the detail panel without a mask. Is this correct?

    Mark D Segal Author: "Scanning Workflows with SilverFast 8, SilverFast HDR, Adobe Photoshop Lightroom and Adobe Photoshop". Please check the PhotoPXL Store for availability.

    Mark D Segal
    Mark D Segal
    Silver Member
    Posts: 763
    Re: dpreview at the end
    Reply #4 on: March 22, 2023 at 4:32 pm

    Reid, yes, what you say about incumbency is largely correct; it takes a long time to build it up and it can take very little time to destroy it, whether intentionally or by dint of other circumstances. I also agree that it makes sense to build readership before charging money for it, even if very little. Too many people have a misplaced notion that access to websites should necessarily be free, no matter that there is no free lunch out there and the better they are the more resources and time it takes to keep them that way. Such is life.

    It’s good that you tried promoting PhotoPXL over at DP Review, but the response you got does not surprise me. In fact it wouldn’t surprise me if those folks were thinking of re-creating a DP Review II, for which prospect they would obviously prefer to keep as much of their readership with them as they can. If that’s the motivation, perhaps they could be negotiating with Amazon to take back the whole content intact, who knows. Perhaps there will be another shoe to drop on all this – time will tell. Meanwhile maybe this forum will gain adherents as people look for other good places in which to converse and get the info they need.

    Mark D Segal Author: "Scanning Workflows with SilverFast 8, SilverFast HDR, Adobe Photoshop Lightroom and Adobe Photoshop". Please check the PhotoPXL Store for availability.