- Apple Photos Curves Pictures
- Apple Photos Curves And Functions
- Apple Photos Curves Pictures
- Apple Photos Icloud
Histograms: Our starting point is to assume you know that the histogram shows the distribution of the actual tonal values in the image. Specifically, it is a bar chart of the relative count of pixels with each tone from black at 0 to white at 255. However, the histogram data height is always scaled so that the maximum does reach the top (which aids seeing the tiny shortest ones). But relatively, the taller histogram graph spikes just means more pixels exist with that tone value. There is no 'correct' value. Black scenes will have many dark pixels, and white scenes will have many bright pixels. The histogram is not a light meter, it only shows what did happen (it has no clue what the scene is, or what ought to happen). There is really no great image detail we can identify, but it does show the overall extent from dark to light tones (which depends on our exposure). We do think in terms of adjusting exposure to align the data towards the right edge, to be 'bright enough' - but primarily the main point of looking is specifically to insure there is no clipping at 255 (a tall thin spike right at 255 indicates clipping), which would be detail lost (and colors changed) due to overexposure. A second useful idea might be that any empty areas at either end are 'wasted', and often better if adjusted so the data spans the full available range (meaning the whites will actually be white, and the blacks will actually be black .. which is more contrast). But which of course depends, any far right alignment necessarily assumes our scene actually does have bright data which ought to be far right (not always true of every image - for example, probably true of the picture of a polar bear in the sun on the snow, but not true for the black cat in a coal mine). So the histogram shows what is (resulting from the exposure), but it cannot recognize the scene to know how it ought to be. However the human photographer's brain should have a good idea how it ought to be (so do use your brain). We do like dark things dark, and bright things bright (contrast). There are two types of common histograms, very different and important, see this page. The histogram data numerical values are also gamma encoded, see this page
In the Photos app on your Mac, select the photos you want in your slideshow. You can add or remove photos later (see 'Add or remove photos and text in a slideshow,' below). Choose File Create Slideshow Photos. Click the Slideshow pop-up menu and choose New Slideshow. Type a slideshow name in the Slideshow Name field, then click OK. In the Photos app on your Mac, select the photos you want in your slideshow. You can add or remove photos later (see 'Add or remove photos and text in a slideshow,' below). Choose File Create Slideshow Photos. Click the Slideshow pop-up menu and choose New Slideshow. Type a slideshow name in the Slideshow Name field, then click OK. Best Apps of 2016, as Chosen by Apple. MaxCurve is a professional photo editor, which has the most comprehensive curve editing function and pro manual camera. MaxCurve achieves great innovation with 28 curves, most of which users have never seen on other apps. Even Photoshop can't achieve such an exquisite adjustment performance.
The Curve tool may actually seem to be simpler to understand than Levels, because it is graphic. It is same as any graph, associating points along the horizontal axis with points along the vertical axis. Basically, the curve tool is a graphic 'response curve' of the response you want. It just maps tones, a conversion from 'input' tone to 'output' tone (a before and after concept, of what this tool does). Input is the image data that you read in (before). Output is the image data that you will write out (after).. with modified tonal values, which is the purpose of editing. The graphic curve is the response curve of the tool, the specific map to convert input to output. The histogram is shown faintly in the background, which is the data which will be processed, which could be a guide. Shown next is a standard Curve Tool (from Photoshop):
iPhoto and Aperture had the nice Sepia Tone effect to create sepia toned Black and White photos. This effect is missing from Photos.
It can be recreated in Photos using a combination of the adjustments 'Color > Saturation' and 'Curves'. By looking at the colors of a sepia tone image, we can see that the red channel is the brightest, and the green values are roughly 98% of the red values. The blue channel is much darker, only 80% of the red channel. To set this color balance do the following:
- First, remove the saturation completely, by dragging the saturation slider in the Color adjustment section all the way to the left to -1.0. If you leave a little saturation, -0.8 or so, you will create the 'Antique' effect instead.
- Now click the disclosure triangle to the left of 'Curves'.
- Leave the Red curve as it ist.
- Set the selector to 'Green' and grab the upper right corner of the Green curve and lower it just a little bit, by 2% or so. Be careful, that the curve stays a straight line. The curves tend to wiggle like snakes, if we move the pointer along the curve and not just drag the endpoint down. If you accidentally create a new definition curve on the curve, drag this new point towards the endpoint. The green curve should look like this:
- Set the selector to 'Blue' and grab the upper right corner of the Blue curve and lower it by 20% or so.
The Blue curve should look like this:
Apple Photos Curves Pictures
Now you can copy the new Sepia adjustment from the photo where you applied it to other photos. While in Edit mode, use the Image menu: 'Image > Copy adjustment ⇧⌘C' to let the adjustment from the selected image and and 'Image > Paste adjustment ⇧⌘V' to stamp it onto another selected image. If you apply the keyword 'Sepia' to your Sepia Photos, you can quickly find back to a photo, where you can lift and stamp the adjustment from. Or create an album with sample adjustments.
The Curve tool may actually seem to be simpler to understand than Levels, because it is graphic. It is same as any graph, associating points along the horizontal axis with points along the vertical axis. Basically, the curve tool is a graphic 'response curve' of the response you want. It just maps tones, a conversion from 'input' tone to 'output' tone (a before and after concept, of what this tool does). Input is the image data that you read in (before). Output is the image data that you will write out (after).. with modified tonal values, which is the purpose of editing. The graphic curve is the response curve of the tool, the specific map to convert input to output. The histogram is shown faintly in the background, which is the data which will be processed, which could be a guide. Shown next is a standard Curve Tool (from Photoshop):
iPhoto and Aperture had the nice Sepia Tone effect to create sepia toned Black and White photos. This effect is missing from Photos.
It can be recreated in Photos using a combination of the adjustments 'Color > Saturation' and 'Curves'. By looking at the colors of a sepia tone image, we can see that the red channel is the brightest, and the green values are roughly 98% of the red values. The blue channel is much darker, only 80% of the red channel. To set this color balance do the following:
- First, remove the saturation completely, by dragging the saturation slider in the Color adjustment section all the way to the left to -1.0. If you leave a little saturation, -0.8 or so, you will create the 'Antique' effect instead.
- Now click the disclosure triangle to the left of 'Curves'.
- Leave the Red curve as it ist.
- Set the selector to 'Green' and grab the upper right corner of the Green curve and lower it just a little bit, by 2% or so. Be careful, that the curve stays a straight line. The curves tend to wiggle like snakes, if we move the pointer along the curve and not just drag the endpoint down. If you accidentally create a new definition curve on the curve, drag this new point towards the endpoint. The green curve should look like this:
- Set the selector to 'Blue' and grab the upper right corner of the Blue curve and lower it by 20% or so.
The Blue curve should look like this:
Apple Photos Curves Pictures
Now you can copy the new Sepia adjustment from the photo where you applied it to other photos. While in Edit mode, use the Image menu: 'Image > Copy adjustment ⇧⌘C' to let the adjustment from the selected image and and 'Image > Paste adjustment ⇧⌘V' to stamp it onto another selected image. If you apply the keyword 'Sepia' to your Sepia Photos, you can quickly find back to a photo, where you can lift and stamp the adjustment from. Or create an album with sample adjustments.
With the saturation slider set at -50% the photo will have faintly saturated colors like in the iPhoto Antique effect:
Added: To recreate Aperture's Cyanotype:
Apple Photos Curves And Functions
For the black end of the curves, for the dark shadows, raise the blue and the red curve slightly, so even the darkest shadows will have a dark, purple tint.
Apple Photos Curves Pictures
For example:
Apple Photos Icloud
Ultimaker cura software. The Sepia filter is primarily changing the color of the bright image areas, the Cyanotype effect does not tint the bright areas so strongly, but is changing the colors of shadows more. So I moved the green curve slightly away from the black point - the shadows are now strongly purple, while the highlights are still white or of a neutral gray.
