Tuesday, February 10, 2009

Photoshop - Perfecting Digital Images, Layer by Layer

By David Peters

Photography, as an art form is constituted of numerous intricacies. From selecting optimal light conditions, to varying the amount of exposure to even selecting the appropriate lens and filters and yet we find that despite our best efforts, we are usually never completely satisfied with the final outcome.

However, it so happens that despite these measures, the image does not always figure the way you imagined it to be. Re-shooting the image is not a very viable option, given the large investments in terms of time and money the process calls for. And hence we are lead to the art of editing. A device widely used by conventional and digital photographers, alike, editing software allows you to rework your image until you achieve the exact results you were aiming for. And as time and technology have advanced, many new kinds of software have been developed, of which Adobe Photoshop is undoubtedly one of the most prominent names.

Many a times, editing software does produce the desired effect, but significantly lowers the image quality. As a result, many photographers choose not to experiment with editing software but try the more conventional "darkroom techniques." With Photoshop, this hurdle is vanquished as you can work on your image without altering the original content itself. And this can be accomplished by using "Layers" which are similar in nature to transparencies, each of which consists of a part of the image. When stacked over each other, these layers collectively form the complete image. Hence, by using layers, you can work on only a particular part of the image to which you can apply your choice of effects while leaving the rest of the photograph unchanged.

Hence, if you have a picture which is overexposed at certain parts, you can focus on building density and modifying the color of that particular layer, until it blends in with the rest of the image. And if your judgment is not wholly accurate at the first go, you can also choose to undo the effects in parts until you reach the phase which is workable and take it from there. This is because, you are undoing, not the overall effect of the image itself, but only of the particular layer or even a section of the layer, thus saving you from investing a lot more time and effort which redoing the entire image would have called for. Here, you can also experiment with the Multiple Undo option which lets you experiment to your hearts content and yet stick with only the changes which are appropriate to your final image.

If your editing skills go haywire, and you end up with something you didn't quite expect, you can also undo all the changes you've made and start all over, without even the slightest bit of change to the original image quality. You can also gauge if your editing is proceeding the right way by turning off the visibility of the layer you are working on, to view the overall effect and then turning the visibility back on to proceed with your editing.

Photoshop lets you choose between two alternatives when it comes to creating your personalized layers. You can either start at the Layer Menu and choose an adjustment layer from the New Adjustment layer Sub-Menu or click on the Layer Palette icon which enables you to choose a layer adjustment type from the pop up menu. To save on time and effort in future, you can even save the layer adjustments to apply them on further images in future without having to worry about if you'll achieve the same results.

To distinguish between layers, once you have divided your image, you can name each layer with a distinct title which will make it easier for you to switch between layers and avoid confusion. To do this, double click on the layer you wish to rename and enter the title you've selected in the name field. Once you click on OK, the new name will be saved, letting you proceed with the other layers. If it helps you focus, you can also hide the other layers and concentrate on only one specific layer at a time. You can do this by clicking on the eye icon beside each of the layers to make them disappear and then click on the icon again to bring them back. This allows you to work on one layer at a time, without being distracted by the other un-worked or reworked layers.

You may also inundate yourself with more layers than you can handle in which case, you can easily deleted the unwanted ones, without disturbing the others that you need. You can even select a combination of layers and merge them together by choosing the Merge layers Option in the Layer Menu. As any Photoshop expert will tell you, if there's one tool you need to master when you learn Photoshop and make the most of it, it has got to be layers. So wait no further get to work on that image which you've always wanted to work on, but didn't for fear of ruining it you can never tell just what you might unmask! - 2361

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