Review on High-performance Canon 550 EX Flash: Compatible with G6, G5, G3, G2, G1, Pro1, Pro90 & all EOS SLR Cameras by Walter Hodzic

I am a beginner photographer using the T3i. This is my first off-camera flash. My budget is very limited and I wasn't sure if I should use the 550ex. The 550ex turned out to be a very good flash, similar to the 580ex but with predictably fewer features. It serves as master, slave and wireless; ETL works too. Given the cost of the 430ex and 580ex, the 550ex is a good economical choice; Most of their features cost around ½ to ⅓ the cost. I like the entry level Pro Speedlite flash and it works perfectly with the t3i. The one I bought was used (as it was discontinued) but works well. I'm learning how to use off-camera flash on my skills.