Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: SD memory card performance? I'm trying to determine if the SD800 takes advantage of faster SD cards and haven't been able to find that information in product reviews.  For example, is there any noticeable performance difference using a SanDisk Extreme III instead of a lower priced Ultra II?
Document: Don't get me started on the video quality and the wide angle. I dare you to find another camera packed full of good stuff for the price. I can't believe you won't find this at Best Buy or Circuit City; but I take pride in having what most people don't. You have to shop around!You can make this camera faster by buying an Ultra II or Extreme III disk. Look around for sales. The Ultra II 2GB disks can sometimes be cheaper than the regular SD Cards.
It died on me when I tried to update the firmware. Be careful with trying to update firmware on Canon's I guess. This camera is simply fantastic though... and it weighs next to nothing.Oh, also... make sure to buy memory that is SDHC (not just SD). The SD will work, but is a little slow. I bought this:SanDisk 2 GB Extreme III SD Memory Card ( SDSDX3-2048-901 ).
For the most part, the SD800 takes as good of pictures and has faster response time. Only difference is that G2 has more manual controls. The SD800 would be a good replacement if the G2 had major problems.The video setting is very good for the size camera. I purchased a 2GB SD card and should never have a problem with filling up the card, even on a long trip.Lastly, I agree with the comments about the cheap battery cover.
As others have reported, the door has a flimsy feel, but my first camera in this line (the S-100) had a similar door and I never broke it. Anyway, the USB-2 picture download pretty much eliminates needing to pop out memory cards to get a faster download speed via a card reader. I did invest in a 4Gb high speed SD card since maximum movie length is 4Gb at 640x480, 30 frames per second, or about 25 minutes worth of pretty darn good movie taking.
I'm partial to Canon compact digitals, but I prefer Nikons for digital SLRs. This camera is great. Image stabilization works well. There is minimal lag after pressing the shutter. This is the widest lens you can find in a compact Canon camera. Check out Ken Rockwell's reviews and guides on his site. It's better to read his stuff and see his examples instead of trying to read some boring manual.
What sold me was the performance remarks for this camera and now I have to tell my experience. It takes under two seconds to turn on the camera and be ready to take the first snap shot. After the first picture was taken it took under 2 seconds for the next picture. I took 5 pictures in under 10 seconds with this camera. I paired this camera up with a fast performance SD memory chip and this is the best performing digital camera I've had the pleasure of using.
My camera came a couple of days ago from Amazon and I love it. Start up is superfast and writing to my SD card is so much faster than my old camera. I have taken a couple of dozen indoor shots without flash and they came out great. The image stabilization really works. Outdoor shots came out clear and the colors are so vibrant. I didn't need to install any software to transfer the pictures to my desktop (I'm using Windows Vista).
(Respectively)My only real gripe is that Canon (as well as other manufacturers) insists on providing a cheap, "throw away" memory card with their cameras. In this case, it's a puny 16MB card. What's the point? It's grossly inadequate. In order to get the most out of this camera, you will need to purchase a larger capacity card. I bought a 1GB Ultra II which works well, and seems to be very adequate for my needs.
This is a nearly perfect camera -- it's feature-packed with excellent photo & movie quality. An important feature that is a "step-up" from the SD700 is the DIGIC III system (SD700 has DIGIC II). This means better quality photos & movies, AND the movie limit goes up from 1 GB (just 8 min. in hi res) to 4 GB using the SD800.
The longer telephoto is attractive, though, and it has the required anti-shake.For cameras of this pixel count, it's interesting to note that you can put almost 1500 pictures on a single 2GB SD card. On a trip? That's 100 pictures a day for two weeks - not bad. And the cards aren't expensive.So, for my requirements, this camera is near ideal, and I'm very happy with it. No real gripes at all.
Answer: from what I read on www.dpreview.com they said it will take advantage of faster memory. They used extreme III 1 gig sandisk card to test it so the ultra II would be a little slower. The Shutter speed will be impacted but how much between Ultra II and Extreme III it may be very little but It will be a lot slower with standard slow speed sd memory. Until the end of May Adorama camera is offering a rebate on Extreme speed sd memory.