Yes—if the Photron Stedy Pro 560 uses the standard camera mounting screw, it should fit a Canon 600D. Most cameras and tripods use the common 1/4-inch tripod thread, and the 600D has that standard tripod socket on the bottom.

The main things to check are:

• the tripod uses a standard 1/4-inch screw or quick-release plate
• the tripod’s maximum load is enough for the 600D plus your lens
• the plate sits securely without blocking the battery door if that matters to you

So in general, tripod compatibility is usually not brand-specific, and a standard tripod head should mount to the Canon 600D properly.