Short recent history of Canon's elph series has gone like this, if you're interested in the numbering (if not, don't bother reading, you'll be bored :-)
sd400-> sd500-> sd600, amongst others that i won't bore you with. all very similiar with a "normal" size screen in relation to other cameras each year,
then came the sd700IS, and the SD600 wasn't updated when that came out. This one changed the form factor and added the image stabilization.
The SD630 came out around the same time, nearly identical to the SD600 but with a bigger screen (and more focus points, but the difference in these two was pretty much nothing)
They discontinued the SD700IS in favor of the SD800is pretty quickly, and they also came out with the SD900, which was 10 megapixels, but ended up being very noisy at high ISOs, and they put the higher megapixels on hold for a couple generations.
So there were three types: basic big screen early image more pixels stabilized sd600 sd630 sd700is sd900 | | | | v v v v sd1000 sd750 sd800is on hold a bit | | | | v v v v (starting here, they put image stabilization in all of them) | | | | v v v v sd1100is sd870is sd850is sd950is (still (3"screen) (2.5"screen) (more pixels basic)
Sooo, I personally don't see LOTS of sense in the numbering of the cameras, but maybe the summary helps. (and sorry if i bored any of you, i warned you to stop reading.)
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Short recent history of Canon's elph series has gone like this, if you're interested in the numbering
(if not, don't bother reading, you'll be bored :-)
sd400-> sd500-> sd600, amongst others that i won't bore you with. all very similiar with a "normal" size screen in relation to other cameras each year,
then came the sd700IS, and the SD600 wasn't updated when that came out. This one changed the form factor and added the image stabilization.
The SD630 came out around the same time, nearly identical to the SD600 but with a bigger screen (and more focus points, but the difference in these two was pretty much nothing)
They discontinued the SD700IS in favor of the SD800is pretty quickly, and they also came out with the SD900, which was 10 megapixels, but ended up being very noisy at high ISOs, and they put the higher megapixels on hold for a couple generations.
So there were three types:
basic big screen early image more pixels
stabilized
sd600 sd630 sd700is sd900
| | | |
v v v v
sd1000 sd750 sd800is on hold a bit
| | | |
v v v v
(starting here, they put image stabilization in all of them)
| | | |
v v v v
sd1100is sd870is sd850is sd950is
(still (3"screen) (2.5"screen) (more pixels
basic)
Sooo, I personally don't see LOTS of sense in the numbering of the cameras, but maybe the summary helps.
(and sorry if i bored any of you, i warned you to stop reading.)