Must you use Linear Profiles? — Bruce Percy

You’ll be able to see that with Gamma corrected distribution the tonal vary is evenly unfold. With Linear, all of the shadows and mid-tones are all compressed to the far left.

Since I’m not a digital shooter, and don’t have any dwelling expertise of working with linear recordsdata, I can not advise you on what to make use of. However simply taking a look at these graphs would point out that working with linear profiles is just not the way in which to go. You want to perform a little research as a result of I don’t have the expertise to let you already know what is correct. And the very best analysis you are able to do is to experiment, somewhat than studying different individuals’s factors of view.

My workflow

I’ll allow you to into what I do although. I’m in search of the flattest, low distinction file I can get. As a result of I’m not a digital shooter, I take advantage of a movie scanner to seize my transparencies digitally. What I do is be sure that the shadows and highlights are pulled proper out at both finish. This smoothens out the tonal scale, and likewise avoids clipping something. Most significantly it produces a really gentle tonal vary. I additionally set the mid tone publicity in direction of the correct to get the general publicity of the image the place I would like it. I find yourself with a really brilliant tremendous gentle scan of my transparency. Every thing appears a bit washed out, however I’ve a number of shadow data and clean tones. For those who just like the look of my work, that is what I do to attain clean tonal scales throughout the picture.

I then ‘add distinction’ and I do it ‘domestically’ to chose areas. Simply by including depth to 1 or two areas of the body – the picture begins to look very punchy, however actually, it’s nonetheless principally a really gentle file. It’s the ‘perceived’ distinction of going from these tremendous gentle areas of the body to darker tones that I’ve punched in that offers the the picture depth. Be aware that I mentioned ‘notion’. The picture nonetheless retains clean gradations all through, while additionally being punchy. That is unimaginable to do should you simply add a distinction curve to the whole image: every part might look deep and fascinating, however you’ve utilized onerous tonality globally to the image. This isn’t good.

So, what must you do?

Nicely, once more, I’m not a digital shooter and I wouldn’t have the expertise of working with digital recordsdata. If it have been me, I feel I’d work with a gamma corrected profile – resembling Adobe ‘Impartial’ as a place to begin, and even then: I would scale back the distinction a bit globally in RAW, earlier than I start work in Photoshop.

For extra data on Gamma & Linear profiles

For those who’d wish to learn extra about gamma corrected profiles, and why they’re used, then this text ought to do it.

You might also want to learn Alex Kunz passionate article about why he thinks linear profiles should not the way in which to go, and gamma corrected ones are nonetheless the correct alternative.

Parting ideas

I’m hesitant to publish this publish, as I really feel that is maybe strolling into delicate territory with divided camps about which is greatest : linear or gamma-corrected profiles. Once more, I’m no digital shooter, however I hope that my rationalization of what I do with my movie scanning ought to provide you with an thought of how you must do the identical factor in your RAW conversions.

My purpose is to get a file that has very gentle gradations all through it, and has gamma corrected tonality all through. This permits me to keep up the graceful gradations whereas I punch in depth to chose areas of the file.

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