Since the digital camera revolution, most of us now store photos on our computers. This gives us much more control over our images than we ever had with film. One time, we were very careful as to the composition of a photo, as a mistake was a costly waste. With digital, there is no waste and even if an image isn’t up to scratch when it’s downloaded onto the Mac, it’s not too difficult to try to fix it. If it can’t be fixed, it’s no big deal, because there’s usually another few taken either side of the bad one that will do.
Photoshop is obviously the best-known image editor, but by Christ you pay for it. The current version, from Creative Suite 3, weighs in at €689 + VAT. You can of course get the stripped down Photoshop Elements, currently on version 4 for the Mac. (Our Windows-using friends are enjoying version 6.)
There are dozens of alternative image editing applications available to Mac users. Some of them come pre-loaded, others are freely available via download (free and paid-for). In this post, I’m going to run through some of the image editors I have amassed over the last few years.
Preview

If you open an image on your desktop, or if you open one from the Finder, it will launch Preview as the default image viewer. Preview offers a very basic array of features, but some of them can be quite useful. You can rotate the image with Cmd+L and Cmd+R. From the Tools menu, Image Correction offers the possibility to do some basic adjustments to saturation, contrast, brightness and sharpness. You can also convert it into a sepia image. You can crop an image by dragging your mouse over a rectangular area and using Cmd+K (or Tools > Crop).
iPhoto

iPhoto has an impressive selection of editing tools. Double-click on an image in your library to enlarge it, and from the toolbar below the image, click on Edit. The image opens up in full-screen, with the editing toolbox on a pop-up toolbar where the Dock would normally be. As with Preview, you can crop and adjust the levels, but with iPhoto, there are more adjustment options. There is a simple red-eye removal tool, and a touch-up brush, which can remove unwanted skin blemishes with a click. That it would be so easy to remove them in real life! iPhoto also an effects pallette, where with one click, you can change your photo to black and white, sepia, give it an antique effect, etc. iPhoto is non-destructive, and when you make any adjustment to a photo, it creates a new file and stores the original safely, should you ever want to revert to the original. To do this, go to the Photos menu and select Revert to Original.
ComicLife

As the name might suggest, ComicLife is more than just a simple image editor. It is a fully featured application for turning your photos into comic strips, complete with captions, speech bubbles and styled text. There is a licenced copy in every new Mac, so if you have an Intel Mac and haven’t come across it before, have a root around your Applications folder and you’ll find it. If you have a Power PC Mac, ‘fraid you’ll have to buy it for $25 or so.
Photo Booth

Not an image editor as such, but Photo Booth is great fun. It takes a photo with the built-in iSight camera, and allows you to apply several different effects. The photo can be distorted, made into an x-ray, a pop-art collage, and many more effects. Kids love this app. The one above is of me losing the head.
Imagewell

I love Imagewell. It’s a tiny app, barely 1MB to download, but it packs a hell of a lot in. It is an essential tool for preparing an image for posting on the web. A couple of sliders reduce the dimensions of the image and the filesize. You can crop, add in text, speech bubbles, etc. And then when you’re done, you can choose where you want to send it - to your desktop, to a specific folder on your hard drive, to your .Mac account, even to an FTP location. This is one of my essential blogging tools. And best of all, it’s free.
Skitch

Skitch comes from plasq.com, the same people as Comic Life, and as I am such a fan of Comic Life, I thought I was going to love Skitch. But, sad to say, I hardly ever use it. It’s cute, but there isn’t a lot there that I haven’t got in other apps like Imagewell. Also, it seems to be centred around posting your images onto a central Skitch website, and saving as a jpeg isn’t as intuitive as it could be. It’s still a beta, and to get a copy you need to be invited.
Pixelmator

One of the most keenly anticipated new Mac releases this year, Pixelmator is an excellent (and cheaper) alternative to Photoshop. The layout is very familiar to anyone who has ever used Photoshop or Elements. The big selling point is that it uses the video card in the Mac to render the images, thus speeding up edits and transitions. A licence costs $59, and considering all the gear that comes with that, is pretty good value.
GIMP
If you want Photoshop functionality, but don’t want to pay for it, you can always go Open Source. GIMP stands for GNU Image Manipulation Program. One big drawback is that it doesn’t run natively on OS X. Instead you have to dig out your Install disks and load up X11, an emulator for OS X. This slows it down a lot, a major disadvantage if you are playing around with complex images.
So, are there any more really good Mac OS X image editors out there I should know about?
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