how to save logo witout decreasing resolution

[Soheil282333084hqe]

Hi 

I designed a logo in adobe illustrator and I want to use it in different photos in different sizes and resolution.

I wanted to know how should I save it to not involve with resolution problems in main photo.

thanks for helping.

[Trevor.Dennis]

If you made your logo in Illustrator, it is a vector image and can be scaled to any size without losing quality.  How are you brining it into Photoshop?

[Bojan Živković]

I am usually saving it in Libraries for use in other Adobe products like Photoshop.