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Card for canon 50D?

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hiall

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Witch one of these is better for my new camera?

SanDisk 8GB CompactFlash Extreme III or
SanDisk 8GB CompactFlash Extreme IV ?

How much is the diffirence? Or should i get some other card?
 
Scott Weierich said:
16GB Sandisk Ducati Extreme is the best.
Click to expand...
The "Ducati" edition CF cards have been discontinued by SanDisk, and AFAIK were only available up to 8GB.

The Latest Extreme IV cards now have the same operating speed as the "Ducati" edition, and are available up to 16GB capacity.
Scott Weierich86292 said:
hiall said:
Witch one of these is better for my new camera?

SanDisk 8GB CompactFlash Extreme III or
SanDisk 8GB CompactFlash Extreme IV ?

How much is the diffirence? Or should i get some other card?
Click to expand...
Click to expand...
Unless you are doing intensive continuous shooting, the Extreme III is quite adequate and is an excellent card, and very good value for money.

--
Scott Weierich86292 said:
To Err is Human, To really foul things up you need a computer.
Click to expand...
 
Yeah, IV is bit too expensive for my taste... But is the III fast enough to take pictures at 6fps? And if so then how many?
 
hiall said:
Yeah, IV is bit too expensive for my taste... But is the III fast
enough to take pictures at 6fps? And if so then how many?
Click to expand...
Sorry, I can't answer that one.

I'd suggest you look up the 40D reviews and see what results were measured there. The initial frame speed depends on how quickly the camera writes to the buffer. Once the camera buffer is filled, the speed is dictated by how fast the buffer can write to the card. The 50D should be similar to, or a little better to the 40D.
--
hiall said:
To Err is Human, To really foul things up you need a computer.
Click to expand...
 
The III will do just fine for all but the most intense use. Sandisk III's currently have a rebate but it's only good till the 10th or maybe 11th and they are hard to find. I just ordered two 16gb from Pictureline (Thurs 10/9 late AM) and they'll end up about $40 each after rebate, assuming the rebate works. I rarely use rebates but I couldn't pass up the savings and need something for my pre-ordered 5DMKII as well as my recently arrived 50D.

the IV will, of course be faster, but the real benefit for many people will be in how fast you can transfer a full card to your computer. I'd go with IV if I shot high speed motor sports professionally and needed long sustained bursts on a MKIII. For 6fps on a 50D in bursts of 5 or 6 frames the III will be quite adequate for me. I'll only wish I had the IV on the few occasions I shoot burst of birds, one after the another in a flock and overun the buffer and have to wait for the card to finish getting written to. For most people that's not a huge issue but only you can decide if it's worth the added money. At roughly $40 for a 16gb card if you act fast, the III is a great deal today.
 
I ordered 3 of the 8GB IIIs from 17th Street Photo for my Nikon D300. They actually just arrived today via UPS ground. After my rebate is figured in, all 3 only cost me $26 total counting shipping. Too low to pass up! They are in stock too:

http://www.17photo.com/product.asp?id=SDCFX3008GR
santa said:
The III will do just fine for all but the most intense use. Sandisk
III's currently have a rebate but it's only good till the 10th or
maybe 11th and they are hard to find. I just ordered two 16gb from
Pictureline (Thurs 10/9 late AM) and they'll end up about $40 each
after rebate, assuming the rebate works. I rarely use rebates but I
couldn't pass up the savings and need something for my pre-ordered
5DMKII as well as my recently arrived 50D.
the IV will, of course be faster, but the real benefit for many
people will be in how fast you can transfer a full card to your
computer. I'd go with IV if I shot high speed motor sports
professionally and needed long sustained bursts on a MKIII. For 6fps
on a 50D in bursts of 5 or 6 frames the III will be quite adequate
for me. I'll only wish I had the IV on the few occasions I shoot
burst of birds, one after the another in a flock and overun the
buffer and have to wait for the card to finish getting written to.
For most people that's not a huge issue but only you can decide if
it's worth the added money. At roughly $40 for a 16gb card if you act
fast, the III is a great deal today.
Click to expand...
--
Scott
 
yes, i looked on sandisk site. no where does it say UDMA. it does not say UDMA on the card.
i asked their CS person and he said they were compatible with UDMA.
i ordered the extreme IV that says 45mb/s on the face.
i think that is the latest card version.
 
...no card currently available will allow you to maintain a steady 6 fps in RAW after the buffer has been filled (based on an average file size of about 12MB). And based on an average JPEG Fine/Superfine (whichever is labeled as the best quality setting on the 50D) file size of about 6MB, you would need the Extreme IV 45 MB/s Edition just to even approach (but not quite reach) 6 fps in JPEG maximum quality. The Extreme III 30 MB/s Edition would slow down your JPEG maximum quality frame rate to less than 4 fps after the buffer has been filled (or to about 2 fps in RAW).
 
RJL65 said:
...no card currently available will allow you to maintain a steady 6
fps in RAW after the buffer has been filled (based on an average file
size of about 12MB).
Click to expand...
That is correct. In the dpreview.com review of the 50D, a Ducati card slowed down after 14 RAW images. see http://www.dpreview.com/reviews/canoneos50d/page13.asp .
RJL65 said:
And based on an average JPEG Fine/Superfine
(whichever is labeled as the best quality setting on the 50D) file
size of about 6MB, you would need the Extreme IV 45 MB/s Edition just
to even approach (but not quite reach) 6 fps in JPEG maximum quality.
Click to expand...
This depends on circumstances. The dpreview test showed a rather middle-performance Lexar 133x card handling 142 JPEG images in a burst before slowing down, in large/fine format. The Rob Galbraith tests show that 30MB/s Extreme III cards should do about 50% better than Lexar 133x cards. On the other hand, I believe that the dpreview tests are done with subject matter without much detail, and as a consequence of this the resulting JPEG file sizes are considerably smaller that the typical shots I routinely capture. (note, I base this on my D90 and D700 shots compared to the dpreview file sizes described, not the Canon 50D).

So... JPEG continuous burst length depends on both the card used and the 'quality' setting and the subject matter (which drives 'compressibility' and file size).
RJL65 said:
The Extreme III 30 MB/s Edition would slow down your JPEG maximum
quality frame rate to less than 4 fps after the buffer has been
filled (or to about 2 fps in RAW).
Click to expand...
YMMV :=)

-- Bob Elkind
Family,in/outdoor sports, landscape, wildlife
photo galleries at http://eteam.zenfolio.com
my relationship with my camera is strictly photonic
 
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