Higher ISO or bigger aperture?

So which one? Both approaches have their problems. When you use a bigger aperture (smaller F number), you loose the depth of field and sometimes also sharpness. When you use higher ISO, you are getting more noise and sometimes, when you go too high, you may loose small details completely.

I look at it this way. You can remove noise in post-processing, you can’t change a blurred area into a sharp one (OK, Topaz Sharpen AI can partially do it, but the results are not the same). As cameras are getting better and better and have less noise in higher ISO, the approach here is quite obvious.

Try different ISO settings on your camera, to determine the highest one you are still comfortable to use. I prefer not to go more than 400 to 800 ISO on my camera. I know that a higher one would still give a nice result, but I prefer to stay a bit lower. So once you can no longer use ISO 100 or lower, stick to the F stop you want to use first. Then raise your ISO until the ceiling you determined for your camera, and only after that start going to bigger apertures.

Different solutions

• Manual focusing. If you focus manually on exactly what you want, you can get away with using a bigger aperture, without loosing the depth of field you want. Having a look at focusing using Hyperfocal distance will also help you to maximize it.
• Underexposing a photo. A way to get over the 30s limit, is just to underexpose the photo. When you shoot in RAW, you can get few exposure stops from it. So you can take a photo that is 2 stops underexposed and then just overexpose it in post-processing. Can save you a lot of time in the field.
• Bulb timer. You can stick to your ISO and aperture, and just use a very long exposure. Some cameras have bulb timer build in, for some you need a remote. Bulb timer is a great solution if you have a lot of time to spare. But that’s often not the case. For instance, taking photos during a short blue hour. It’s just over so quickly. If every photo you take takes you 5 minutes, you take only very few.
• Focus blending. Depending on the scene you are capturing, you can try doing focus blending. Instead of one long exposure, do multiple shorter ones, with bigger aperture and different focus points. Then blend them into one in post-processing.
• Tilt-shift lens. One of the ways one can use a tilt-shift lens, is to tilt the focus plane. It’s mostly used to get a shallow depth of field, but you can also go the other way. You can use it to get a bigger depth of field, while still using a bigger aperture. Like that you can use a shorter shutter speed and lower ISO.
• Magic Lantern firmware. If you have an older Canon camera, you can use the Magic Lantern firmware on it and so remove some of the camera’s limitations. It provides a build in bulb timer and also allows for longer than 30s shots when doing bracketing. Overall, it gives so many features, that’s it’s worth a try.

Photoshop shortcuts for photo editing

• Ctrl+Z – undo. I’m only including this, as recently the undo behavior changed in Photoshop. Ctrl+Z is now a regular undo and you can press it multiple times to go back in editing history. Previously it toggled the last state instead.
• Shift – restrict movement. Holding down Shift with most other tools in Photoshop will restrict what you do to only horizontal or vertical movement. So for instance when you are using a brush and want to do a straight line, hold down Shift and draw your line. It will be straight. You can use the same with Clone stamp tool, Gradient and other tools in Photoshop
• Space – pan. The most basic shortcut. When you hold down space, you cursor will change into a hand and you can drag around your image. Using scroll bars or zooming in/out is just not as effective.
• Ctrl+Space – zoom in. After moving around, zooming is the second most common thing you will do in Photoshop. When you hold down the keys, the cursor changes to a magnifying glass and you can zoom in by clicking. You can also hold Alt+Space for zoom out, but I never use that. The shortcut is not as comfortable to use. Instead, while holding down Ctrl+Space I right click, and from the menu choose Fit to screen. This makes for a very fast navigation overall
• Ctrl – move. By holding down Ctrl, you will temporary switch to the move tool. It’s just for the time you holding it. So you can for instance be painting, and you notice you want to move something. Hold it down, move what you need, and just let it go and return to what you were doing.
• B – brush. When masking photos, you will use the brush a lot. Not needing to go back to the tools panel will save you a lot of time
• Alt+RMB+move mouse – change hardness/size. One needs to change the hardness and especially the size of a brush very often. To avoid having to go to the toolbar all the time, there is a simpler way. This works of course only when the brush tool is selected. What you do is to hold down the Alt key together with the right mouse button. A circle will shot up. Now move you mouse left to decrease the size of the brush, right to increase. Move down to increase the hardness, up to decrease it.
• D – default colors. Hitting D on your keyboard will set the foreground color to black, with the background to white. Especially in masking you will use these two colors a lot, so this makes for a great and easy way to reset them. (btw. when you have a mask selected, it defaults to the opposite, so black foreground with white background)
• X – switch colors. Using the X key will switch the foreground and the background colors. Again, really useful with masking, where you switch between white and black all the time.
• Ctrl+T – free transform. Another one you will do all the time. This will let you transform your selection. Don’t forget, that you can change the way you transform by just right clicking the selection and choosing from the menu. Perspective, distort and warp are really useful in photo editing.
• Ctrl+I – invert. Pressing this combination will create a negative of you photo. Not really that useful there, but much more with layer masks. For instance when you have a mask that selects all the light parts of a photo, just press it and you have a mask that selects all the dark areas of a photo.
• Ctrl+D – deselect. Everybody knows Ctrl+A is select all. But you will not use that that often in Photoshop. Instead, especially if you work a lot with selections, you will need to deselect quite a lot. And going through the menu all the time is just too much of a hassle.
• Ctrl+H – show/hide extras. Things like marching ants, guidelines and grids are very helpful when editing. But sometime there are just in the way. You need to see what you are doing without any distractions. In this case, just hit Ctrl+H to hide them all. But when you can’t find them afterwards, don’t forget to turn them back on :)
• Ctrl+Alt+Shift+E – merge visible. Often during the editing, you need to merge all the layers you already worked on, into one. For instance when you are using a plugin and you want it to work on more than just the last layer. Pressing this combination will merge them all and create a new layer on top.
• Shift + Backspace – fill dialog. Another one that you will use all the time. This shortcut opens the fill dialog, where you can fill a selection with a specific color. But the more important use is that you can choose content aware as the fill option here. Like this you can use Photoshop to quickly fill in missing parts of a photo, or to remove objects or people from it. Just do the selection around them, open the dialog, choose content aware and confirm.
• Ctrl+click on layer – select layer content. Another useful shortcut when working with layers and layer masks. If you hold down Ctrl and click on a layer in the layer window, the whole content will be selected (which with photo is mostly the whole image). But when you click on a layer mask, everything that is white is selected. This is very important in editing and the creating of luminance masks. You want to restrict your selection, and this is how it’s done.

Let’s end here so this does not end up like a Photoshop manual :) There are many other shortcuts and the ones you use will mostly depend what you do there. But in photo editing, I think these are the ones you will use all the time. After a while, you will even stop thinking about them and just use them automatically.

Using levels to brighten a photo

So what I do, is to create a selection of only the shadow areas in a photo and then add contrast and brightness to those. I don’t want to change anything with the bright areas of the photo, just the dark ones. One has to:

1. Open a photo one wants to edit
2. Go into the Channels window. If you don’t see it, you can turn it on under Window/Channels
3. In this window, hold down Ctrl and click on the RGB channel. This will select all the bright areas in a photo and you will see the selection marching ants on your image.

4. Now, we need to inverse this selection, so instead of the bright areas it selects the dark ones. Hit Ctrl+Shift+I (or Select/Inverse from the menu). The selection will change to the inverse one.
5. Go back to the layers window. Choose Create new Adjustment layer in the bottom right (circle icon that is half white, half black) and from the menu choose levels.

6. A new levels layer will be added with a mask already applied to it. In the levels window, you will see, that the histogram is towards the left and not the right. That means no highlights are select and will not be modified.
7. To add brightness, start dragging the white triangle on the right side of the histogram to the left. Until it touches the histogram, you are no overexposing any parts of the photo, so you can safely move it as much as you need.
8. To add contrast, move the middle triangle to right. I would not overdo this, usually staying between 1.0 and 0.9 works best.

You can repeat this process multiple times, as after each edit, the selection changes. If you are getting very saturated colors afterwards, you can just change the blending mode of the layer to Luminosity and then it will have no effect on the color saturation at all. Yo can also use this only on part of your image, depending on what you need.

One can get a similar result by using Curves or the Brightness/Contrast adjustments. Mostly depends on which one are you most comfortable to use.

And here are few before/after comparisons. The changes are subtle, but noticeable. Maybe a bit harder with the photos next to each other, but much more when you can flip between the two versions in Photoshop. Most editing is just these subtle changes used multiple times.

Mountains and fog wallpapers in 4K

And here are the newly added wallpapers:

Budapest night wallpapers in 4K

And here are the new additions: