Dmitri R.

Forum Replies Created

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
  • in reply to: RAW Power 3.0.1 is now available #59097
    Dmitri R.

    Dear Nik,

    As a matter of fact that I began to use RAW Power 3 immediately just appeared on iTunes. Now, — it it updates to 3.0.1. My verdict: it is exact that is required for a professional workflow on mobile devices iPhone + iPad. I am especially impressed with the following:

    1) Ihe improved automatic modes. In RAW Power 2, they left some blank “teals” on the dark and bright sides of the histogram, but not always (I did not find a system in that gap). So, I almost always fixed the histogram “tails” by my finger, using the curve. Now, the auto modes work properly, without blank “tails.

    2) The histogram has became more sensitive. Sopposedly, you increased the sensitive spot. At least, in the past, I hooked the histogram sliders by my finger not each time.

    3) LUTs are my passion. As a photographer who initially worked with film (scanned using Imacon), I can judge “how it looks on real scan”. So, the FujiFilm simulations are very exact compared to real film scans. I recomend these LUTs to everyone. What I would add to the LUT list is a number of Ilford, Kodak and Agfa LUTs. There is a free redistributable set of Darktable film presets (they are as good as the commercial DxO presets). I never produced LUTs by my own, but someone else could produce LUTs from them via Darktable on a macbook or imac. The presets are here:

    What I did not find in RAW Power 3 are still:r
    1) Selective masks (because non-integral, selective luinosity masks/instruments are the main instruments for professional editing);
    2) Grain tool; I note that there is still NO a 16-bit grain tool for iOS/iPadOS. All iOS/iPadOS software that include a grain tool, such as Snapseed, etc., allows only 8-bit export. If addiing a grain tool to RAW Power, it will be the first tool allowing to add film grain to images expoted to 16-bit TIFF.

    You know, I purchased and tried actiually all iOS/iPadOS photo software. Just because my wish to release a professional photo workflow on iPhone/iPad stack. In brief, I found that only RAW Power + Affinity Photo satisfy my professional requirements (despite the fact that I evaluate ACDSee Pro as well). All other photo editing iOS/iPadOS apps are far behind the professional use. I do not list all these apps, as well as argue my decision. Meanwhile, trust my experience, I know that I speak.

    Thank you for carrying RAW Power and with my best wishes for the future — Dmitri

    in reply to: Is possible to move a 16-bit workflow to iPhone #35907
    Dmitri R.

    Dear Nik, thank you for response. I will be happy if a selective adjustment and a grain tool will be added to RAW Power.

    Concerning real film grain. Real film granulation appears non-equally. The grains are most visible in the midtone areas, much lesser visible in the highlight and dark areas, and almost disapoears in the most dark areas of Zone 0 (according to Ansel Adams 10-zone system). Most of the grain emulation tools was created by young persons, who do not remember the “pre-digital era” thus never seen how real grain looks. DxO, Capture One, and Snapseed developers created correct grain tools like in a real film frame, while the others merely superimposed a grain pattern equally on both the highlights, midtones and darks that is incorrect and looks poor to everyone who once developed scanned film frames over decades.

    As you understand from the above, to achieve the correct grain look a grain pattern is applied using a hill-like opacity curve, which has about the one-third height at the highlight end of the histogram and almost falls down at the dark end of the histogram. Also, in this case the granulation looks voluminous, not flat. This is the answer of a DXO woman sent to me ten years ago when I corresponded with the DXO personnel on this subject. Scroll down the article on this theme for detail: there on bottom of the discussion are many other illustrative pictures and links to many other articles on this theme. But all of those points to the aforementioned bell-like curve showing the film granulation lesser at the highlight end and even much lesser at the dark end of the histogram.

    It is simpler to show ratrher than explain by words. So, below are screenshots, a 100% magnification, made from my film frames. Two types of film are presented here — Kodak Tri-X and Rollei IR-400 — because they manifest the most beautiful and sharp film granulation. These are 6 x 7 film frames scanned with an Imacon/Hasselblad drum scanner in 2014 at a 4,800 dpi resolution. When printing such super-MegaPixel scans on a 75 x 100 cm paper, they show a very nice granulated texture. Otherwise, say, if printing a digital image in such a large format without a film grain superimposed, it looks soapy that is absolutely rejected by collectors and art fans in general.

    P.S. A little bit of offtop. As a matter of fact that there is also a problem with the magnification of digital images, because for printing a 75 x 100 cm needs a 120-130 MPx image. Here is also a problem with iOS software. A Windows/MacOS workflow uses Benvista PhotoZoom Pro (costs 160 Pounds) with its a patented magnification algorithm of which has no other alternative for 600X+ magnification. There is only one iOS program application, Big Photo, which uses a similar algorithm. But it gives only a PNG-8 output in the moment. I already contected the developer on this subject; he obligated to add PNG-24 and TIFF 8 and16-bit output to the forthcoming release.

    So, below are a few of 100% magnification screenshots from my scanned film frames. You can easily see how the real film granulation has a maximum in the midtone areas, is a bit lesser in the highlight areas, and is much lesser in the very dark areas (on the black tree branches). Snapseed follows this way, so producing the film granulation in the right way, but only using a very large grain. Darkroom for iOS — does not; it applies the granulation equally throughout the image.

    I hope this will be useful to you. — Dmitri

    Kodak Tri-X 400 highlights

    Kodak Tri-X 400 midtones + highlights

    Kodak Tri-X 400 midtones + darks

    Rollei-IR 400 highlights + midtones + darks

    Rollei-IR 400 highlights + midtones + darks

Viewing 2 posts - 1 through 2 (of 2 total)