You know what, that didn't help in the slightest
How come they are so cheap!?
What are the gains over a 40D (I have a 40D atm!)
Cheap? - I guess it's because the markets sort of flooded with them. Just be patient and theres no reason you couldn't pick one up for £650, I think shops ask about £800ish but you get a warranty!!!!!!!.
Either way depending on patience £600-£700 is a realistic figure for good condition one on fleabay (remeber, 1 series good condition is different to xxD/xxxD good condition!!). But if it's not looking so great and a fair bit of metal underneath the black paint showing £500-£600 is a good target too.
Start with what you loose:
Compact size
10 mpixels to 8.2
Big juicy LCD
Self-cleaning sensor
14-bit RAW
Picture Styles
EF-S options
New control system (old camera requires you to always be holding buttons to navigate or change certain settings)
What do you gain:
45 AF points, 8 cross point sensitive
8.5fps shooting
Easier to use light meter (+/-3 stops which is nice too)
Good high ISO (5Dc level)
Multiple-spot metering (great way of maximizing tonal detail and finding the best comprimise on exposures)
Viewfinder
2/3rds of a stop shallower DOF (good or bad)
1.3x crop factor
1D series build
Insane battery life (2000 shots on each battery - heavy though)
Excellent flash metering with separate meters in the viewfinder
Less menus more button pressing
High level of customisation- including
AF jump speed from 1 sec interval to 0.125 sec interval (canon 0.5 secs on cameras by default),
AF expanison
Shutter Lag
Silent shutter (works well- mirror recocks slowly as you release the shutter)
Personal Functions ideal for disbling stuff you don't want/need like metering/ISO/Modes
Dual Card slots
Assist button very useful in sports shooting
Excellent adobe RBG jpegs ideal for sending out at speed (with or without RAW files)
Much less viewfinder black out (80ms)
40ms shutter lag on f/2.8 glass
Weather Sealing & of course
A heavier backpack!!!
For a hundred to two hundred quid more than a 40D? Yes please!!!
IMO the best value camera ATM - 6 months ago these were fetching £1200-1400!!! Not many people are looking at them so therefore they've sort of slipped under the radar.