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DPChallenge Forums >> Hardware and Software >> HELP .. problem with camera
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09/22/2007 08:04:16 AM · #1
this may not be the right place for this but i'm having a problem with my canon 400D .. or possibly my lens .. i'm not sure ..
i have two lenses .. a Tamron AF 18-200mm f/3.5-6.3 XR Di II for Canon and a Canon EF 100mm f/2.8 USM Macro .. i recently had the tamron away to be fixed because the mechanism inside was causing it to catch when doing automatic focus etc ...
since i've had it back it seems that when i'm using the tamron i dont have to take many photographs in quick succession before the camera is busy .. before i could maybe take four or five on burst before it would process them, taking a few seconds, and i could shoot again .. now it seems to be happening much more often and after less photographs .. today i was using the flash and i had only taken one photograph and it was busy for maybe 5 to 7 seconds .. is it possible that it could be the lens affecting the camera .. it doesnt seem to be happening with the canon 100mm .. but i havent used the flash with it for a while ..
someone said it could possibly be the memory card so i change it, but i'm still getting the problem ..

Message edited by author 2007-09-22 14:10:13.
09/22/2007 08:21:31 AM · #2
RAW or JPG format? Also make sure you have long exposure noise reduction in the OFF mode when not needed.
09/22/2007 08:31:44 AM · #3
I was having the same issue with my camera awhile back
i was advised be someone here to remove the batteries for a few days.
thats seemed to do the trick.
09/22/2007 08:37:00 AM · #4
If you are taking a lot of flash photos in quick succession, the camera will say "busy" while the flash is recharging. Also, after I forget how many, maybe 5 or 10 shots, it gives a really long busy wait. This is protection against burning out the flash. I found this a lot when I was taking flash test shots trying out some stuff, and I kept having to wait.

Another idea - check the CF card. If you had a fast card, and it was away for repairs, they may have swapped it for a slower card, and they might still have your fast card. :)

And yes, check that it's not shooting RAW onto a slow card.

Check batteries if they are low, maybe this will slow down the flash recycle time.

Check if it's worse at smaller apertures (higher number) and lower ISO. This would support the theory that it's flash related, as the TTL flash will be working harder in this situation.

When it is busy, does it say "Busy" on the screen? Or is it just doing stuff and won't let you shoot?
09/22/2007 01:53:09 PM · #5
thanks guys ..
i think it must be flash related combined with the slow CF card ..
i shoot in RAW ...
i didnt even know before 5 minutes ago that CF cards came in fast or slow .. the one in my camera at the moment is a 2gb and 120x .. just checked my 1gb's and they're all 150x .. which is a total buggar .. now i'm going to have to buy another couple of 2gb cards .. altho i might just get 4gb and be done with it .... does anyone have any advice on the the CF cards ??
& wots the fastest card ??... thats the one i'll go for, because having to wait while the most excellent shot in your entire life passes you by sucks !! ..

09/22/2007 01:57:56 PM · #6
The biggest drawback is the size of the buffer. As soon as you've shot off 10 (in RAW) you have to wait for one to complete writing to the card to get one more shot.
09/22/2007 07:24:02 PM · #7
I don't know what the fastest cards are, but I always get Sandisk Ultra IIs, which are pretty fast at about 10Mb/s. There is a Sandisk Extreme III, which is 20Mb/s, and a new 40Mb/s series.

(At the shop, I was told that the III was the same speed as the II, just more weather proof, but looking at the specs online, Sandisk say the III is definitely faster.) I don't know what the speed limit of the 400D is, whether you reach a limit where the card speed is no longer important, and the camera speed is more the issue.

09/22/2007 08:59:56 PM · #8
I'd say this is almost definitely due to the flash recharging and protecting itself from melting. What brand of memory card do you have? 120x and 150x cards are generally pretty quick. I have a 120x Transcend card that keeps pace with the Sandisk Ultra 2 quite well.
09/22/2007 10:32:10 PM · #9
Originally posted by roz:

b] does anyone have any advice on the the CF cards ??[/b]
& wots the fastest card ??... thats the one i'll go for, because having to wait while the most excellent shot in your entire life passes you by sucks !! ..


The cards just get faster, bigger and cheaper, but there is no point in buying a card that is alot faster than your camera is. As to which brands are the best my faith in buying ScanDisk was a bit shaken by a recent article on CF card build quality I read from Rob Galbraith's site.

DPReviewran a comparison with the 400d and theses cards.

2 GB SanDisk Extreme IV CF card
2 GB Lexar Pro 133x CF card
8 GB Lexar Pro 133x CF card
Hope it helps.


Message edited by author 2007-09-22 22:41:31.
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