Philoslothical,
Originally posted by Philoslothical There's absolutely no reason not to use it. They're good batteries (I know you think otherwise). Treated well, they're usually quite reliable, too, though their lifespan might be shorter than NiMH.
I bought a cheap ($29!) grip for the T3i . It worked great for AAs. Unfortunately didn't work with the Canon Li-On battery. The contacts in the Li-on battery tray were misaligned
Afer reading some reviews of that grip on Amazon, I tried to realign them with pliers, but it ended up ruining the Canon Li-On battery, such that it won't work in the camera anymore . sigh
The Canon grip is $200+ and I didn't want to spring for that.
So now the only way I can use my T3i is with the grip + 6 AAs, or with the AC adapter. Strangely, the DC coupler for the AC adapter still works even in the faulty grip Li-on tray.
I started doing some comparisons for stills between the T3i + Canon 18-55 IS II lens, vs K200D with DA 18-250 .
I took some indoor shots in a large room with high ceiling, which is relatively well-lit (9 large 23 W ceiling CFLs). I shot as JPG with both cameras.
I was taking the same subject from the same viewpoint, and I used 18mm as focal length. I took 4 shots with each camera, at ISO 1600, 800, 400 and 100. F=3.5 for both lenses at 18mm.
The T3i shutter speeds were 1/30, 1/15, 1/10 and 1/3. The K200D speeds were 1/50, 1/25, 1/13, 1/3 .
Results :
1) The last 2 shots, at ISO 400 and 100, are noticeably blurrier on the Pentax. Seems like the SR may be working better on the Canon. That, or I shook less with the Canon somehow The cameras have different weights. I was using the T3i with grip and K200D without, but the K200D is still heavier due to materials, and the heavier lens.
2) When sizing the shot to my 2560x1600 monitor, I can't see any noise on the 1600 ISO shot from the Canon.
But I can see a lot in the 1600 ISO shot from the Pentax .
At 800, ISO I can still see a bit of noise i the Pentax shot at monitor resolution.
3) these are relatively minor differences compared to the colors. The Canon is doing a much better job. It is almost day and night; respectively. The shots from the Canon are all far brighter and the colors more realistic. Even at ISO 100 , the colors on the K200D shot look washed out.
This may be a problem with the auto white balance and the K200D not liking my CFLs. I will try to set it manually.
T3I ISO 1600 shot :
K200D ISO 1600 shot :
Looks like Blogger/Picasa isn't preserving the EXIF data unfortunately, and is scaling the pic down to something less than my screen. But the noise is still visible in the K200D shot. Look under the piano especially.