background preloader

Hdr

Facebook Twitter

High Dynamic Range Software and Techniques | Wayne Grundy's PhotoTech Blog. Digital cameras have a come a long way in the past ten years, and now a RAW file from a full frame camera can have a 12 stop exposure range. (Though it is in reality actually rather more difficult to extract the full range). There are many situations when this will not be enough, resulting in blown highlights and shadows dominated by noise. Combining several exposures in post processing will recover the highlight and shadow detail. In the early days of digital, this was little more than making an exposure for the sky, and another for the ground and merging them in Photoshop – often with mixed results.

The launch of HDR software like Photomatix and the features progressively added to Photoshop have made this somewhat easier – no need for masks or manual blending. However, HDR has received bad press due to the unreal results that can be obtained with it. The products I tested were Photomatix – (From $39 to $119) Bracketeer – in single image mode Bracketeer. Enfuse GUI. Creating HDR Images Directly in Lightroom - Video Tutorial. Sep 07 2009 Here I was just doing my daily Web surfing when I came across a Youtube video by Michael James.

In this video, he compares various ways of creating HDR images. The one that caught my attention was Lightroom plugin Enfuse. The reason it caught my attention was the fact that I could create an HDR image directly in Lightroom without ever leaving Lightroom! I’m all about workflow efficiency and this option sounded great. If you missed my Photoshop tutorial on HDR, you can also check it out. The best news of all is that it does work really well. 1- Download and install the Enfuse application. 2- Download the Enfuse Lightroom plugin HERE (top right). The rest of the steps are shown in the video, so let’s get right to it! Nouvelle fonction HDR avec Lightroom 4.1 avec Lightroom 4.1 sur Tuto.com. Digital Blending Tutorial: Creating Clean & Natural HDR Images Without HDR Software. Blog / Tutorial — Learn HDR Photography. Hey! Let’s learn HDR photography together. Our instructor today is Trey Ratcliff.

If you haven’t met him yet, Trey is HDR guru, old school gentleman explorer, fellow 500px-er, and an all-around great guy. So let’s venture out on a journey and learn from Trey how to take best HDR images possible, what software to choose & how to use it, and pick up a few neat ticks along the way. Introduction HDR is an acronym for High Dynamic Range. The human eye can see so much more than a single shot from your camera!

The human eye can see about 11 stops of light. HDR Examples Here are a few interesting HDR photographs that I have taken that people seem to like. Step 1: Tools & Software First you need to gather your equipment (camera, lens, tripod) and software. Camera. 90% of cameras sold today can take great HDR photos. Software. Recommended HDR Software: Step 2: Go out and shoot The idea is to take under exposed, over exposed photos and photos with normal exposure. Bracketing. Aperture priority. High Dynamic Range (HDR) Photography in Photoshop. High dynamic range (HDR) images enable photographers to record a greater range of tonal detail than a camera could capture in a single photo.

This opens up a whole new set of lighting possibilities which one might have previously avoided — for purely technical reasons. The new "merge to HDR" feature of Photoshop accomplishes this by combining a series of bracketed exposures into a single image, which encompasses the tonal detail of the entire series. Single Photo without HDR After High Dynamic Range Technique Image above courtesy of Kyle Kruchock (albeit in a heavily modified form). There is no free lunch however; trying to broaden the tonal range will inevitably come at the expense of decreased contrast in some tones. As digital sensors attain progressively higher resolutions, and thereby successively smaller pixel sizes, the one quality of an image which does not benefit is its dynamic range.

Brightness Distribution Underexposure Overexposure *As measured by a digital camera. Reference. La photo HDR : tutoriel complet pour créer des images HDR avec Photomatix, Photoshop ou Gimp. HDR pour High Dynamic Range : mais c'est quoi ? HDR (high dynamic range, grande plage dynamique ou grande gamme dynamique) est devenu au fil du temps un terme photo un peu fourre-tout, qui regroupe des méthodes et des techniques permettant de réaliser des images à grande plage dynamique. On rencontre souvent les dénominations « photo HDR », « image HRDI », « prise de vue en HDR »… mais de quoi parle-t-on, au fond ?

La plage dynamique d'une photo, c'est l'écart qui existe entre les ombres les plus sombres et les lumières les plus fortes dans l'image (on parle parfois d'étendue des tonalités). Au final, ce n'est pas la photo réellement dont on évalue la plage dynamique, mais plutôt le média ou l'instrument qui la capture et la restitue : œil humain, écran, papier, capteur d'appareil photo numérique, film… Principe de la photographie HDR Avant toute chose : savoir ce que l'on veut faire avec le HDRI ! Il y a grosso-modo deux raisons qui peuvent motiver un photographe à faire du HDR : Conclusion. Really Right Stuff-WhatIs. 5 logiciels gratuits pour la photo HDR. On a abordé plusieurs fois la photo HDR, cette technique qui permet d'assembler plusieurs images avec des réglages d'exposition différents.

Photo par Paco CT, sour licence CC Je reprends les mots de Xavtek (Composer des images HDR.) pour définir le HDR : Citation: On peut se référer à l'article disponible ici (Composer des images HDR.) pour en savoir plus sur la photo HDR avec Photoshop. Photo par Mike9Alive, sous licence CC Voici aujourd'hui 5 logiciels gratuits pour la photo HDR, qui peuvent être utiles en complément du tutorial de Xavtek : 1.

Création de photos HDR à partir de plusieurs images, tone mapping, import d'images RAW. 2. Certainement le plus connu : il permet de combiner plusieurs images pour créer une photo HDR, et dispose d'une fonction de tone mapping. 3. easyHDR Basic (Windows) De la même manière que les autres logiciels, il permet de créer des photos HDR à partir de différentes images. 4. 5. Un excellent logiciel, pour toutes plateformes.