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Super quick Previewing Using Blending Modes

Blending modes and tools offer a really powerful set of compositing features that can be used to speed up a lot of tasks. The following is a very simple trick that many people know about but often forget. Here is the scenario: you need to composite an image of a glass of milk on an image of a table.

Removing Black or White

Photoshop offers ready-made blending modes for removing black and white from one layer placed on top of another. The Multiply blending mode will render white pixels transparent, while the Screen mode does the same with black pixels.

Both blending modes will also affect how other tones in your layer interact with the layer below, so unless this effect is something you are going for, this technique is usually best used to preview images that are on solid black or white backgrounds.

Masking

Masking out an image is key to almost all compositing workflows, and is often the most time-consuming, tedious part. You have two main areas of masking to choose from when an image needs to be isolated from its surroundings. Manual masking is the preferred method of most top graphics professionals: usually, this means using the pen tool, brushing in Quick Mask mode, or using the channels of the image to create an Alpha Channel mask.

Alternatively, automatic masking can be affected by an ever-increasing range of tools and third-party plug-ins within Photoshop. Which method you choose will often be determined by how much time you have, the complexity of the task, and the intended use of the image.

Quick Mask for Web Imagery

It might sound obvious as a time-saving trick, but when you need to mask an image in super-quick time, the Quick Mask really can be a lifesaver. I use it for Web imagery, as the edge details will then not be so apparent at the fixed pixel view the user will have. It is also important to choose an image with decent contrast between your masking subject and its background, or the Quick Selection tool will not do a great job with really tough selections

Know Your Background Color

You can often save a lot of time masking if you know and bear in mind what background your masked image will be composited on. Keep your goal in mind; when you need to get the job done, release your mind from the constraints of perfect masking and do the bare minimum!

Conclusion

There is no shortcut to becoming proficient on your chosen tool or in your chosen craft, be it Photoshop or anything else; but once you have mastered a tool and understand its power, it is then up to you to do what you do best: be creative with it. This means looking at those everyday tasks you do, the time limitations you are faced with and your ability to improvise. Look under the hood once in a while, and be creative and inventive with everything you do!

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