Here is a convenient way of carrying over your vector data to Photoshop.

If you wish to open your vector data in Photoshop, it is a common way to export them to a raster format like TIFF first. However, the conversion to TIFF takes more or less time depending on resolution and color model and in addition take much space on your hard drive.

A convenient way to get around these points is to choose the EPS file format. Export your illustration to Photoshop by using this format. Photoshop will then ask you for information such as size, resolution etc. during rasterization.