Compact Flash card Problems?

[hhyndman]

Hi Folks,
I'm having some problems and I'm suspecting that it might the compact flash cards I'm using.

I got a 300D about 3 weeks ago, with the kit lens, and was using a danelec 256 MB card quite happily (probably took a couple of hundred shots - no problems).

Yesterday I got a 2nd lens, a canon 75-300. What I'm finding is that every time I change the lens (after switching the canera off), I have problems, either
- it claims the memory card is full
- images are corrupted
- or the camera hangs
same thing happens if i simply remove and re-fit the kit lens.

If I remove and replace the battery, then reformat the card it works fine until I change the lens again.

I've tried a twinmos 128 MB card it's quite a bit better, but I have problems maybe 1 time in 5 when I change the lens.

I've also tried a canon card (only 32 MB :( ) which seems to work fine - no problems.

So..... Anybody else having similar problems? Have I just been buying poor quality memory cards (they work ok in my ipaq)? Anybody think there might be a problem with my camera?

What would be a good brand of compact flash card to buy?

Thanks
Hugh.

[scotgasch]

I have several brands of older CF cards that I don't use anymore but I did try what you are doing with my 10d with no problems.

[westfalcon1]

I hada Dane electric card and I think the best thing to do with that card is to flush it down the toilet. Mine lost images for me and I had no confidence with the card. I have had my best luck with Kingston cards. I've never had a bad brand other than the Dane Electric. On second thought, don't flush it down the toilet...it may corrupt your toilet too!!!!

[robertwgross]

Hugh, are you sure that the camera is done writing to the CF card before you start tearing things apart (lens and power)?

If it were me, I would co a full re-format in the computer on the CF card, then format it in the camera and start all over. It can't hurt.

---Bob Gross---

[robertwgross]

Hugh, are you sure that the camera is done writing to the CF card before you start tearing things apart (lens and power)?

If it were me, I would co a full re-format in the computer on the CF card, then format it in the camera and start all over. It can't hurt.

---Bob Gross---

[Brian Mackey]

I hada Dane electric card and I think the best thing to do with that card is to flush it down the toilet. Mine lost images for me and I had no confidence with the card. I've never had a bad brand other than the Dane Electric. On second thought, don't flush it down the toilet...it may corrupt your toilet too!!!!

DITTO!

[hhyndman]

Thanks all - I'm now using a PQI 512 MB card - no problems yet. I guess I've been guilty of buying the cheapest compact flash cards I could find on ebay and am now paying the price.

I still find it a bit odd that I only get the problems when changing lenses. It makes me think those wee contacts on the lens and body aren't quite as well isolated as they might be.

Thanks again.

[defordphoto]

Yeah hhyndman, watch those super cheap CFs. They'll bite you, as you have learned. Bob had a good suggestion though. Format it on your PC and then format it in the camera.

I do have to say that I have never heard of the names of the CF cards you're using.

[EoSD30fReAk]

I only use Sandisk cards, 128mb and 256mb, i have never had any problems with them.
i almost bought a DANE ELEC card once but even the sales guy told me they were no good! I also have the IBM md 1gb.
glad i never bought the Dane elec

[Phil Hall]

If you have problems after changing lenses it could be the lense connection..Error 01. I sometimes have this on the 1Ds and have to clean the lense contacts more often than on the 1D or D30.