issue155:tutoriel2
Différences
Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentesRévision précédenteProchaine révision | Révision précédente | ||
issue155:tutoriel2 [2020/04/04 08:34] – d52fr | issue155:tutoriel2 [2020/04/07 18:47] (Version actuelle) – andre_domenech | ||
---|---|---|---|
Ligne 4: | Ligne 4: | ||
We have been looking at Darktable in FCM, but know it is not your only choice in photo editing. Today we look at another excellent piece of open source software. It may seem a bit daunting when you open it at first. I know I was lost the first time I opened this. ** | We have been looking at Darktable in FCM, but know it is not your only choice in photo editing. Today we look at another excellent piece of open source software. It may seem a bit daunting when you open it at first. I know I was lost the first time I opened this. ** | ||
+ | |||
+ | Site Web : https:// | ||
+ | Version 5.6 | ||
+ | Prix : Gratuit ! | ||
+ | |||
+ | Nous avons regardé Darktable dans le FCM, mais sachez que ce n'est pas le seul choix en traitement des photos. Aujourd' | ||
**Left to right , we have five panes, the first being the itty-bitty strip, with your file browser queue. Then browser, main window, another strip, and editor. (In editor mode, we only have four panes). We will be spending our time in the editor. Your keen eye may have spotted that there are little bars with an arrow attached in the menu bars. These are the show / hide buttons. Mouse over may say “i”, “shift-i” and “alt-i”, | **Left to right , we have five panes, the first being the itty-bitty strip, with your file browser queue. Then browser, main window, another strip, and editor. (In editor mode, we only have four panes). We will be spending our time in the editor. Your keen eye may have spotted that there are little bars with an arrow attached in the menu bars. These are the show / hide buttons. Mouse over may say “i”, “shift-i” and “alt-i”, | ||
+ | |||
+ | De gauche à droite, nous avons cinq panneaux. La première bande est toute petite, avec la liste du navigateur de fichiers. Puis il y a le navigateur, la fenêtre principale, une autre bande et l' | ||
**Your homework is to mouse over the different icons and see what they do. | **Your homework is to mouse over the different icons and see what they do. | ||
Ligne 14: | Ligne 22: | ||
Once you have opened the picture in Rawtherapee, | Once you have opened the picture in Rawtherapee, | ||
+ | |||
+ | Comme travail personnel, passez la souris sur chacune des différentes icônes pour voir ce qu' | ||
+ | |||
+ | L' | ||
+ | |||
+ | Merci de récupérer l' | ||
+ | |||
+ | Une fois que vous avez ouvert l' | ||
**Let’s start with black-and-white. There is a reason there are two triangles with exclamation marks in the top bar. Think of them as ‘clipping’ black and white. You will see eight points marked on your histogram, if you are using the above picture. Too many, I think for a simple image like this. You can remove some by clicking and holding and dragging the point to the very bottom. They should turn red as you mouse-over them, then, as you drag them off the bottom, the line should snap back. Should you make any mistakes, just click “auto matched tone curve” and it should be reset. From the left, I want you to remove the second and third dot or pin. Also I want you to remove the second-last pin. Your histogram should have only five pins. The image has almost no black, so we can drag the leftmost pin until where our histogram starts rising. Keep an eye on your picture whilst doing this. This should cause the shadow of the yacht to become more pronounced. Bring your rightmost pin a block in also, to help with the bright white in the sky. Now click the two triangles with exclamation points in them in the menu. YUK! you may say. Relax, this is showing you where pure white and pure black exist within your picture, It does not change anything. You can turn them off now.** | **Let’s start with black-and-white. There is a reason there are two triangles with exclamation marks in the top bar. Think of them as ‘clipping’ black and white. You will see eight points marked on your histogram, if you are using the above picture. Too many, I think for a simple image like this. You can remove some by clicking and holding and dragging the point to the very bottom. They should turn red as you mouse-over them, then, as you drag them off the bottom, the line should snap back. Should you make any mistakes, just click “auto matched tone curve” and it should be reset. From the left, I want you to remove the second and third dot or pin. Also I want you to remove the second-last pin. Your histogram should have only five pins. The image has almost no black, so we can drag the leftmost pin until where our histogram starts rising. Keep an eye on your picture whilst doing this. This should cause the shadow of the yacht to become more pronounced. Bring your rightmost pin a block in also, to help with the bright white in the sky. Now click the two triangles with exclamation points in them in the menu. YUK! you may say. Relax, this is showing you where pure white and pure black exist within your picture, It does not change anything. You can turn them off now.** | ||
+ | |||
+ | Commençons par le noir et le blanc. Les trois triangles avec des points d' | ||
**Let me talk about the three sliders above your histogram. Lightness, contrast and saturation are all well and good, but Rawtherapee supports L.a.b. colours as well. In L.a.b., the Luminance can change contrast without saturation. This is important when you need to change the lighting, but keep the saturation the same. If you turn up the contrast to about 35-40, you will see the water come alive, yet the yacht will become a black blob, which is not ideal. The opposite happens when you turn the contrast down, the life seems to drain from your picture. Contrast in a photo is very important. This gives life and depth to an otherwise mundane picture. I know that sounds weird, but it is true. If you just want to copy what the guy did in the picture above, turn the contrast up full, then go to the white balance icon and drag the red/blue slider all the way to red, and you are done. | **Let me talk about the three sliders above your histogram. Lightness, contrast and saturation are all well and good, but Rawtherapee supports L.a.b. colours as well. In L.a.b., the Luminance can change contrast without saturation. This is important when you need to change the lighting, but keep the saturation the same. If you turn up the contrast to about 35-40, you will see the water come alive, yet the yacht will become a black blob, which is not ideal. The opposite happens when you turn the contrast down, the life seems to drain from your picture. Contrast in a photo is very important. This gives life and depth to an otherwise mundane picture. I know that sounds weird, but it is true. If you just want to copy what the guy did in the picture above, turn the contrast up full, then go to the white balance icon and drag the red/blue slider all the way to red, and you are done. | ||
Back to editing our borrowed photo. The very first slider is “Exposure compensation”. | Back to editing our borrowed photo. The very first slider is “Exposure compensation”. | ||
+ | |||
+ | Permettez que je vous parle des trois réglettes au-dessus de votre histogramme. Lumière, constraste et saturation ; tout ça c'est bien beau, mais Rawtherapee supporte aussi les couleurs L.a.b. Dans L.a.b., la luminance peut modifier le contraste sans la saturation. C'est important quand vous avez besoin de changer l' | ||
+ | |||
+ | Revenons à la modification de notre photo empruntée. La toute première réglette est « Compensation d' | ||
**You may think Rawtherapee is a simple editing program. You would be wrong. Keep your mouse in the right-hand pane and scroll your mouse wheel. Lots more adjustments appear. When you have scrolled to the bottom, you should see “Graduated filter”. Please click on the crosshairs in the very left-top corner of ‘graduated filter’. You should see large crosshairs appear on your photo. Adjust it so that the bottom one aligns with your yacht. Now, next to the word “Graduated filter”, you will see a circle. Click on it. This will turn the filter on. Notice how the sky darkens, but the water stays the same. You are going to want to rotate this so that the light and dark patches match the angle the sun is shining over the clouds. This helps your brain make sense of the photo, that it does not seem “shopped” - Remember, less is more! | **You may think Rawtherapee is a simple editing program. You would be wrong. Keep your mouse in the right-hand pane and scroll your mouse wheel. Lots more adjustments appear. When you have scrolled to the bottom, you should see “Graduated filter”. Please click on the crosshairs in the very left-top corner of ‘graduated filter’. You should see large crosshairs appear on your photo. Adjust it so that the bottom one aligns with your yacht. Now, next to the word “Graduated filter”, you will see a circle. Click on it. This will turn the filter on. Notice how the sky darkens, but the water stays the same. You are going to want to rotate this so that the light and dark patches match the angle the sun is shining over the clouds. This helps your brain make sense of the photo, that it does not seem “shopped” - Remember, less is more! | ||
I want you to play with the “Strength” slider. Understand where the light and dark are. Next I want you to increase and decrease the “Feather”. This is the transition distance between the light and dark.** | I want you to play with the “Strength” slider. Understand where the light and dark are. Next I want you to increase and decrease the “Feather”. This is the transition distance between the light and dark.** | ||
+ | |||
+ | Vous pensez peut-être que Rawtherapee est un simple programme de modification. Vous vous trompez. Gardez votre souris dans le panneau de droite et faites tourner votre molette. Beaucoup d' | ||
+ | |||
+ | Je veux que vous jouiez avec la réglette « Force ». Comprenez où sont la lumière et l' | ||
**To get that vintage camera feel, just turn on “Vignette Filter”, you do not have to adjust anything. For our use case here, I am going to leave it off. If you scroll your mouse up just a little bit, you will see “Tone Mapping”. | **To get that vintage camera feel, just turn on “Vignette Filter”, you do not have to adjust anything. For our use case here, I am going to leave it off. If you scroll your mouse up just a little bit, you will see “Tone Mapping”. | ||
Ligne 30: | Ligne 56: | ||
Disclaimer: In no way am I an expert in photo manipulation, | Disclaimer: In no way am I an expert in photo manipulation, | ||
+ | |||
+ | Pour obtenir une impression d' | ||
+ | |||
+ | Si vous voulez en savoir plus sur Rawtherapee, | ||
+ | |||
+ | Avertissement : je ne suis nullement un expert en traitement des photos. Je connais simplement un gars qui a un chien qui m'a donné des puces. Je pensais que je pouvais vous aider à vous gratter aussi. | ||
issue155/tutoriel2.1585982085.txt.gz · Dernière modification : 2020/04/04 08:34 de d52fr