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Using the Photoshop Curves Tool

Using the Photoshop Curves Tool
The Photoshop curves tool is perhaps the most powerful and flexible image transformation, yet it may also be one of the most intimidating. Since photographers effectively paint with light, curves is central to their practice because it affects light's two primary influences: tones and contrast. Tonal curves are also what give different film types their unique character, so understanding how they work allows one to mimic any film — without ever having to retake the photograph. Similar to Photoshop levels, the curves tool can take input tones and selectively stretch or compress them. If you follow two spaced input tones, note that their separation becomes stretched as the slope of the curve increases, whereas tones get compressed when the slope decreases (compared to the original diagonal line). Note: curves and histograms shown above are applied to and shown for luminosity (not RGB) The curves shown above are two of the most common: the "S-curve" and "inverted S-curve." Inverted S-Curve Related:  Courbe de tonalité / Tone curVe

courbe des tonalités LR 4 sur Tuto.com Ce tuto vidéo "Courbe des tonalités avec Lightroom 4" fait partie d'une formation complète qui vous permettra de découvrir plus en profondeur Lightroom. Découvrez sans plus attendre la formation "Lightroom 4 : Les fondamentaux" dans laquelle vous retrouverez cette vidéo et tous les fichiers source utilisés par le formateur.Les fichiers source ne sont pas fournis dans les vidéos vendues à l'unité. La courbe des tonalités sert à corriger plus finement le contraste dans des zones précises de l'image. Jetez un oeil à ces autres tuto Lightroom 4 Pour vous faire un avis, voici un extrait de quelques secondes. La version complète et téléchargeable de ce tuto Lightroom 4 de 5 minutes est proposée dans une résolution plus grande que l’extrait suivant : video2brain , Editeur pro Toutes les formations de Video2brain Gilles Théophile, auteur dans cette formation Toutes les formations de Gilles Théophile Témoignage des clients de video2brain Lire les autres témoignages D'autres tuto de video2brain

Tone Curve Lightroom Tutorial This extract is from chapter 4 of the Wiley title 'Lightroom 4: Streamlining Your Digital Photography Process' by Nat Coalson. After adjusting the settings on the Basic panel, you can further refine the photo's contrast by manipulating specific tone ranges with the Tone Curve panel (see Figure 4–26). If you’ve used curves in Photoshop or other software, the Tone Curve panel may seem familiar to you. Most photos probably won’t need the Tone Curve You should usually focus the majority of your tone adjustment work on the Basic panel instead of the Tone Curve, which is becoming outdated in the era of parametric processing. Parametric Curve Lightroom’s default Tone Curve is parametric: it adjusts sections of the tone scale, rather than from individual points. Adjust the curve to increase or decrease contrast in specifi c areas of the tonal range. Figure 4-27 You can adjust the Tone Curve in the following ways: Figure 4-28 Region Sliders Figure 4-29 Point Curve Point Curve Presets Inverted curves

Photography, Cameras and Taking Better Pictures 10 Best Documentary Movies About Photography & Photographers « Quintin Lake Architectural Photography Blog The last few years have some tremendously good documentary movies about photography and photographers released on DVD. Here’s my pick of the best 10. Click on the cover to see the film in Amazon.co.uk: Visual Acoustics: Modernism of Julius Shulman [2010] Essential if you are interested in one of the masters of architectural photography or modernism in LA from the Case study Houses onwards. Very poignant to see Shulman’s archive been shipped to the Getty centre a year before he passed away. Henri Cartier-Bresson: The Impassioned Eye [2006] If you are a cartier-Bresson fan like me this is a real treat and goes well beyond the surface in exploring his his oeuvre and plenty of interviews of the man himself discussing his iconic and lesser known work. The Genius of Photography [2007] The best filmed introduction to the magic of photography. War Photographer [2002] Manufactured Landscapes [2006] Follows Edward Burtynsky at work in China and Bangladesh and the USA. Like this: Like Loading...

Tonal Adjustments in the Age of Lightroom 4 The Power of Curves In Photoshop, my primary tonal adjustment tool has been the Curves Adjustment layer. I would wildly guess that 85% of the adjustment layers in my Photoshop files are curves. Working with Shadows This was a snapshot made by my friend Karl Kroeber (see his real work at www.karlkroeber.com), and is a jpeg file. Some very dark shadows The dark trees above are almost completely black. Now Photoshop does offer what could be called a predecessor to the new Lightroom Shadows and Highlights sliders, but it works in a very different way, and not quite as well. Shadows Lightened using Photoshop's Shadows/Highlights Adjustment But, importing this jpeg into Lightroom 4 (or opening it into Adobe Camera Raw 7), provides a great result using the Shadows slider, with minimal halo problems (below). Shadows Lightened Using Lightroom 4's Shadows slider This tonal legerdemain must be very hard, because it took Adobe many years to get it working this well. Working with Highlights May, 2012

Réglages et Courbe [2/2] Si vous avez bien suivi l’article de la semaine dernière, vous avez du voir qu’il reste quelques réglages de bases que nous n’avons pas encore abordés. Aujourd’hui, on va donc s’intéresser à la clarté, la saturation et la vibrance. On va aussi aborder la courbe des tonalités histoire de démystifier cet outil bien pratique. N’hésitez pas à participer au sondage : “Quel logiciel de développement utilisez vous?” à la fin de l’article. Voici les derniers points de la partie réglages de base : la section Présence. Son effet? Son effet? Son effet? On a vu la semaine dernière comment lire l’histogramme et comment ajuster les réglages pour avoir une photo bien exposée : l’exposition, la lumière d’appoint, les noirs, la récupération, la luminosité et le contraste. L’outil courbe se décompose en 5 parties: 1. On est content maintenant qu’on sait ça mais, comment on utilise la courbe ? La courbe se lit “de bas en haut et de droite à gauche”. Sélectionnez l’outil.

UK Commercial photography - Northlight Images The Book Shelf Long before I started blogging, and around when I picked up photography I read books. In the beginning I read almost any photography book I could put my hand on, and as time progresses I got more picky. I intend to maintain this list and link to it from the main page for your reference. Below you will find my favorite reads, the books that helped me learn how to light, how to approach a portrait and that a photograph is more than a combination of aperture and shutter speed. Technique Here I listed my favorite books about “how to photograph”, those books are the ones that I feel had the greatest impact on me in term of learning how to use the camera, lights, and myself as photography tools. Light: Science and Magic is probably the best lighting theory book in the world. It focuses mainly on the technical aspects of lighting so it is a very good read if you are looking on how to solve complex lighting issues. There is a full review about this book here, titled the best photography book ever.

Mastering Lightroom: How To Use the Tone Curve Panel In this short tutorial I will show you how to use one of the easiest and most powerful tools found in Lightroom – the Tone Curve. In my previous tutorial about black & white conversions , I briefly showed you how to use the HSL Panel’s Luminance section to control the lightness of separate colors of the image. Using the Tone Curve Panel is very similar as it also allows you to control the lightness and darkness of various parts of a given photograph, however, rather than altering separate colors, the Tone Curve tool controls certain ranges of actual tones in the image. What Is It? The Tone Curve represents all the tones of your image. While all of this may sound very technical, it is in fact quite simple to adjust. Region Curve and Point Curve Lightroom has two different Curves you can work with. But then there is another Curve you can use if you do need to make adjustments not possible with the Region Curve, and it is called Point Curve. The Easy Part 1) How To Make Your Image Pop

Photoshop tutorial: Tonal range and the Curves tool Of all the tools within Photoshop, the one I use most often, and the one I could least do without, is the Curves tool. It can dramatically enhance the contrast of an otherwise dull image; it can change the colour balance, either subtly or more radically; it can increase the saturation; and it can even covert an image to black and white (when used with LAB color mode). In short, it’s an extremely powerful tool with a wide range of applications; but it’s also quite difficult to understand, at least at first. In this Photoshop tutorial I hope to achieve two things: first, to provide an understanding of some of the basic concepts that underpin the successful application of this tool; and second, to offer a number of practical examples of how this tool can be employed. The topics covered in this tutorial include: By the end of this tutorial you will: Please note that I used Photoshop CS2 to construct this tutorial. The following two images illustrate this point. David J. • next page >>>

Making prints match your screen The other day Keith was asked if calibrating and profiling a monitor would make someone's screen match their prints? Some thoughts and potential solutions for this common problem. This article was written several years ago and has (Sept 2010) been updated with some newer links and information. Can my prints ever match my screen? The short answer is no, ...but the reasons may be much more varied than you first thought, and with care you can get the two very close. Hopefully this short guide (and the links to other more detailed information) will be of help? After profiling and calibrating your monitor... Let's assume that you have read all the articles about how important it is to have your monitor calibrated. You are not quite happy with the quality of prints you are getting and decide to buy a screen calibrator like the Spyder4express or even the basic Pantone Huey. Does this now mean that your prints will look better? Well maybe, but it really is only part of what you need to know... Remember:

L’outil Curves pour retoucher vos images L’outil Courbes («Curves» de Photoshop est un «must» pour vos retouches photos et cela, même si vous avez pris une superbe photographie. « Article original paru sur le site web de Tutorial9.net et a été écrit par Owen James . » Avec l’outil d’ajustement des courbes, vous avez la possibilité… d’ajuster les et les de votre photo d’une manière globale ou locale d’ajuster les Présentation Un pixel possède une certaine clarté (brightness) et vous pouvez changer cette propriété pour plus foncée ou plus pâle. Lorsque vous ouvrez la boîte d’outil des Courbes (Disponible par ou par l’entremise du ), par défault, une ligne diagonale sans courbe s’affiche à votre écran puisque vous n’avez pas encore effectué de changement sur votre image. Tel que mentionné sur l’image de gauche, les points de gauche à droite (du bas vers le haut) affectent: les noirs, les ombres, les tons moyens, les highlights (Quelqu’un connait le mot en français pour Highlight ?) La Courbe-S et la Courbe-S-Inversée

Camera metering modes matrix pattern evaluative center spot partial Digital SLR camera metering modes Understanding metering modes is important for every photographer if they are to take correct exposures. To improve your photography you need to know when to set your digital camera on matrix, pattern, evaluative, center weighted metering, spot and partial metering. Metering modes can be one of the most frustrating settings for beginners to SLR photography. If you have ever taken an under or over exposed photograph using program mode (P), aperture priority (A Nikon, AV Canon) or shutter priority (S NIkon, TV Canon), chances are you've set the metering mode incorrectly. Metering systems work by measuring the amount of brightness within a scenery or object, then sets the exposure accordingly. What metering modes are you likely to find on your digital camera The majority of digital SLR cameras will give you a choice of at least three different metering systems. Matrix metering on Nikon cameras is called either Pattern or Evaluative on other models.

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