I have had my 550D for a few weeks now and I'm very impressed with it - and I had a 40D, 5D and 5D Mark II before it (sold the latter on here very recently due to sheer lack of time to use such a fab, but expensive, camera).
I wanted something a fair bit smaller and lighter than all of those - I think the size of the 550D is great - a little small for some but perfect for me. It makes me take it with me more often - I found the 5DII was getting left at home a bit too much for my liking!
The IQ is stunning - as good as the 7D it seems - and it is excellent at high ISO (up to 3200). I have no problem with shooting at ISO 800 or 1600 all day if necessary, given that I don't need to make huge prints.
The 3:2 LCD is stunning and far better than the 4:3 one on my 5DII.
I'm currently sorting out my lens collection to get the best out of it.
Lenses I'm trying include:
Serious stuff:
17-55 2.8 IS - Had one of these already and love it - but it's heavy. Brilliant versatility with constant 2.8 and IS. Even the 24-70L doesn't give you that on full frame...
Tamron 17-50 2.8 - Briefly tried one the other day - awesome lens, very compact, great colours & contrast, well made, super sharp wide open and amazing value. I have a new one on order from OneStopDigital. The 17-55 IS might well have to go!
50mm 1.8 Mk1 - think I'll keep this for its light weight, IQ and my copy is mint - and they are quite rare nowadays with the metal mount, distance scale etc etc. Only reason I'd sell it is because I have the focal length covered with a fast lens already.
85mm 1.8 - simply stunning for portraits, low light, events, and long enough for candid shots. Marvellous lens!
70-200 F4L IS - what can I say....this one isn't going anywhere! Hooked up to my Canon 1.4x TC when required it's perfect for motorsport and anything else, for that matter.
Lightweight lenses / Travel:
18-55 IS (Kit lens) - brilliant for it's size & weight - no brainer - keeping it! Only worth £65 anyway!
17-85 IS - Love this lens (great range and very sharp) but it's a bit slow (compared to the 2.8 zooms!)
55-250 IS - Cheap, well made, amazingly sharp for £150 wide open throughout the range including 250mm (yes, really!). If you have a crop sensor Canon and want a cheap zoom - this is the one. Try it - you'll be amazed for the price. I think it's as good as my old 70-300 IS was (at twice the price).
Sorry this has almost turned into a quick lens review. Fact is, they all perform very well on the 550D. I think the 550D IQ is better than my old 40D was, more detail, and better at ISO 800 & 1600 for sure.
I've tried it at Mallory Park on a test day and the AF copes absolutely fine with fast cars / panning etc so no problems there.
The only negative I can find about it is the ISO increments - 100, 200, 400, 800, 1600, 3200 etc - i.e. nothing in between. I used that a lot on the 5DII.
All in all I'm delighted with my 550D so far. If anyone wants to know anything specific....feel free to ask
