Ok so I'm at the point where I need to maybe consolidate my kit and sell some stuff out. Right now I do amateur photography myself and a little with my son, who is 12. I'll list my full kit just for clarity: Canon RP (6240 × 4160) Canon 5D MKI aka original (4,368 × 2,912 res) Canon Kiss something something aka Canon 550D (pretty sure) (5,184 × 3,456 crop) Canon 24-105L f4 Canon 50mm f1.8 Sigma 50mm f1.4 ART (obvious duplication here) Canon 17-40L f4 Flashes I'm trying to decide if I sell the 5D or the 550D. I'm thinking I sell the 5D with the nifty fifty because it's such a logical starting point for intro photography and will probably sell quick. That said, it makes a good start for my kid (he likes it, so why mess with that). If I'm selling the 550D I don't really have any lenses that make much sense. What do you think the real trade off is in image quality between the 5D and Rebel? From the images I'm looking at the 5D is perfectly acceptable on screen (and probably still 'ok' for print). I certainly don't see a huge advantage in using the 5D over the 550D. The limitations like ISO and continuous shooting speeds are just a non issue on a second body. It also means less hassle explaining crop factors and trying to keep two things going in my lens kit. The only thing is that in future I'm looking at telephotos, so a crop 1.6 might be handy - the 550D still takes ok photos. So...just ignore that I have the 550D and move on? It's not like I'll loose value due to depreciation here. Wow if you read all that stream of consciousness thanks for sticking with me.