There is an image named "image1.tif".

I read this image, do some processing and want to save with another name, lets say "image1_processed.tif".

The question is, how do I save the processed image,  "image1_processed.tif", with the exact same tiff format of "image1.tif"?

"image1.tif" is saved with photoshop, and I read this image in Matlab and do some processing. When I save the processed image in Matlab, the file sizes do not match, even though both tif files are uncompressed.