How to remove bg on white objects?

[dreamer]

How can you remove the bg on a white object? What background colour will be the best of this?

What tool is the best in PS when cuting out the bg.

[maderito]

Probably any solid color that doesn't interfere with setting exposure and adjusting color temperature for the shot. Black would work.

Use Photoshop's "Magic Wand Tool" to make a selection of the background - and then delete it. There are, of course, other ways.

[dreamer]

yes i was thinking of black too. but when cutting would it leave a black outline around the object? Would the object be dark? Or would i juest use correct lighting?

[maderito]

yes i was thinking of black too. but when cutting would it leave a black outline around the object? Would the object be dark? Or would i juest use correct lighting?
There would NOT be a black line around the subject, but you might have stray black (or gray) pixels that were not deleted. There are ways to deal with this in PS. You can Modify Selection|Expand by say 1 to 2 pixels to make sure you get all the background in the selection and delete them.

You can also use the PS Extraction command which should work very well when there is clear separation of foreground/background as there should be in your images. The advantage is that you have other cleanup tools within the image extraction mode that can clean up stray pixels.

There are other PS tools (background eraser, magic eraser) that can come into play. If you're doing this regularly and seriously, you'll read and learn how to use them -- or upgrade to a professional tool, e.g. http://www.extensis.com/maskpro/ .

[Grubby]

I am in no means a professional, but here are some tricks my amature ways might try.

Keep in mind that sometimes removing the subject itself works best, especially when the background lighting is uneven or the environment is inconsistant. I like the cut out tool on MS Image Composer. It is so easy and fast to cut out parts of images or erase areas as well. Always check your outline pixels when doing this. Halos around white objects are easy to see and easy to fix unless your subject is reflecting another color.

If your subject is reflecting colors from your background make sure you use a black background or make the subject B&W. You can fool your viewer to believe this is a shadow.

The problem with the magic wand is setting it to capture the entire background (without pieces of the foreground). If you do it this way try using a "blue screen" with proper lighting. The screen should be lighted as evenly as possible for easier removal.

[dreamer]

cool thanks for the tips!