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8GB CF card for 20D

Hyon Hall , Jan 03, 2006; 04:15 p.m.

Does anyone know if the card is compatible with 20D Seagate 8 GB CompactFlash for $207 (link)


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Steve Dunn , Jan 03, 2006; 04:40 p.m.

It seems Canon isn't fond of stating the maximum card size their cameras can take; they are fond of saying they can use cards 2 GB and larger (the manual says so, as does the Technical Report in the Canon Camera Museum), but I don't believe I've seen an official statement of what the upper limit is.

It can definitely use 4 GB cards; Rob Galbraith's database shows the performance results of several 4 GB cards in the 20D. I would be surprised if it couldn't use 8 GB cards as well.

That said, there are arguments for and against using one large card as opposed to a number of smaller cards. If you have multiple cards and one of them goes bad (or you realize you just deleted an image that you'd like to undelete), you put that card aside until you can attempt recovery, and put another card in so you can keep shooting. You can't do that if you have only one card. If you drop off your card at the local photo lab to have them make prints, you don't have to wait for that card to come back if you have multiple cards. Of course, in favour of one large card is convenience; you can take a heck of a lot of pictures on an 8 GB card before you have to pause and swap cards.

Scott Matchunis , Jan 03, 2006; 05:19 p.m.

8gb would handle something like 2500 jpegs or 400-500 raw + jpeg. That seems like an overwhelming number of images to have to deal with from a workflow perpective.

I also agree with Steve about not putting all your eggs in one basket. If that single card is either lost or defective, you'd be mighty disappointed.

Kelvin Phan , Jan 03, 2006; 05:24 p.m.

Canon 20D is FAT32 COMPLIANCE. I believe FAT32 support up to 16 terabytes of storage. So, your camera is compatible with Compact Flash 500GB if there is one.

Ken Papai , Jan 03, 2006; 05:24 p.m.

I would no sooner use an 8GB CF card than I would show up for an assignment with just one body and one flash and no backup. Eight one-GB cards are better than that 8GB monster.

Jorge Garcia , Jan 03, 2006; 06:13 p.m.

It seems to me that the link points to an 8 GB microdrive, not Compact Flash

Chris B , Jan 03, 2006; 07:20 p.m.

Can't seem to find the speed specs of these cards.

Chris B , Jan 03, 2006; 07:42 p.m.

I found this:

Compact Flash Speeds Speed Kbytes/s Mbytes/s 1 150 0.15 4 600 0.6 12 1800 1.8 24 3600 3.6 40 6000 6 60 9000 9 80 12000 12


Be carefull, a sandisk ultra II has a write speed of approx 9mb/sec, the segate has 3.6mb/sec. Not sure of your 20d but my 5d requires the speeds of the ultra II.

Bob Atkins , Jan 03, 2006; 08:27 p.m.

Rubbish. The 5D will work just fine with anything from the slowest card to the fastest. You won't even see the difference unless you shoot 70 frame JPEG bursts or 17 frame bursts of RAW images.

Chris B , Jan 03, 2006; 10:19 p.m.

"You won't even see the difference unless you shoot 70 frame JPEG bursts or 17 frame bursts of RAW images"

And what's wrong with having this ability. Why not buy a card which doesn't restrict your camera. Even if you use this feature once a year.

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