Photomerge:

[MJ50]

Hi,

Im making a 18x3 meter banner have a 4 different photo with same resolution and pixels and
i want to use the photomerge option in Photoshop SC3 to manage them into one graphic,
so please guyz help me out how to manage them one by one but not showing edge when
one merge to another.

thanks

[RTW1]

Photomerge is not for joining images from different scenes but for joining overlapping parts of the same scene. If you just want not to have hard edges on the joining images, you do that with layer masks and soft edge brushes or gradients used on the masks.
http://www.youtube.com/watch?v=saaQTGKNMW8

[MJ50]

thank you very much for your kind reply but i know about masking and other things but i had to manage these files through photomerge but you have said it is not possible to apply different sense of images any other kind of tool which done by this. otherwise i will go according to you. thanks