I have the sd890 (gave it to my daughter so still get to use it). It's a nice camera but doesn't do well in low light at all.
The backlit CMOS sensor on the SD4000 is a BIG improvement in low light compared to the s890 and SD700, which I still own.
Meant to type SD4000, not SD4500.
The ZS3 and ZS7 are terrible low light performers, lagging slightly behind even amongst their similarly spec'd peers - so I think that's a safe bet.
Its debatable, John. The SD4500 is 101 x 59 x 22 mm. The Canon TX1 launched three and a half years ago, with a 39 - 390 mm zoom, was 89 x 60 x 29 mm. So the SD 4500 is a bit smaller, and ticks a few more boxes, but also has a smidgin less zoom, 35 MP/cm^2 vs the TX1’s 29 MP/cm^2, no flip LCD, and a less robust lens cover and overall build. The 39 mm wide angle IS a limitation, but the inbuilt Stitch Assist does help with some subjects.
No, I returned the camera before I had a chance to try it. I suspect it's similar of Extra Optical Zoom and that it would work best when shooting subjects relatively close by, like my s90.
It may be similar to the Enhanced Digital Zoom on the TX1 which is explained at:
Thanks for that John. But looking at the illustrations, it seems to me the Ixus 1000 would be difficult to hold without touching some control with your thumb. For something that size, I think the TX1 pistol grip format and mini-control stick may be preferable. Although that format requires a different arrangement for the LCD, which on the TX1 is smaller than on the Ixus 1000. But even a small swivel screen has several advantages over a fixed one, including screen protection when folded against the body. It all boils down to personal preference.
