Stupid 5D Mk ii Qn

Sadlybrokeboy

Sadlybrokeboy

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Hi all,

Recently gone from a 7D to a 5D Mkii - now I know that the 7D could make 'proper' use of UDMA Compact Flash cards - can the 5D Mkii or is that extra speed 'wasted' on them??

Just looking for a bigger CF card and want to ensure I by the right one :)

Ta Muchly!

Matt
 
Hi mate, sorry to hijack but how do you feel about moving from the 7d to the 5d?
 
RSMarco said:
Hi mate, sorry to hijack but how do you feel about moving from the 7d to the 5d?
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Marco,

Happy with the decision - I do a fair bit of plane photography and I thought I'd miss the "crop" factor and the faster AF of the 7D but I've not.

The AF and drive mode still quick enough for me - if anything it's improved my technique slightly and the quality of the images are better (in my eyes!) too.

Dead chuffed with it - don't know why I waited so long to do it! :)

HTH

Matt
 
RSMarco said:
Hi mate, sorry to hijack but how do you feel about moving from the 7d to the 5d?
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Sorry to hijack the thread, again :), but I use both, 7D for couple of years and now added the 5D MKII but let me tell you,t hey are both different tools for different tasks. You can't really compare the full benefits of those two. Where the FF shines the 7D struggles and where the 7D shines its where the 5D MKII has its shortcomings, but hey, that's how they were designed to be, not to compete with each other.

I know precisely what I will use to do a particular job and will select accordingly
 
zulupentax said:
Sorry to hijack the thread, again :), but I use both, 7D for couple of years and now added the 5D MKII but let me tell you,t hey are both different tools for different tasks. You can't really compare the full benefits of those two. Where the FF shines the 7D struggles and where the 7D shines its where the 5D MKII has its shortcomings, but hey, that's how they were designed to be, not to compete with each other.

I know precisely what I will use to do a particular job and will select accordingly
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Have to agree with you also - I just couldn't afford to keep both :shake:

Anyway - does anyone know if there's any benefit in using UDMA cards in the Mk ii?? :)

Matt
 
I've not found a reason to go for anything faster than Sandisk Extreme III cards in the mkII. I use the faster cards in the 7D and 1DmkIII when I need major bursts.

I'm fortunate, I do have both, although the 7D doesn't really come out to play all that often. Usually grab the 5DmkII and 5D for most shoots.
 
Ta Mark - appreciate the info :)
 
Cheers for the feedback and apologies for hijacking!

So what are both bodies good / bad at?
 
mark1616 said:
My personal choice is as follows.

5DmkII Portrait, wedding, landscape, walk-around.
7D, Sports, wildlife, action.
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Spot on, for me too.
I can add that for macro, which I do a fair bit, if I am planning to capture subjects that don't move a lot I will stick the macro lens on the FF. Otherwise 7D everytime. Its AF speed is just phenomenal.
 
mark1616 said:
Man, what are you machine gunning to get to that stage LOL?
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Took a dozen or pics of a steam train last week as it went past. By the end of the bust I was waiting and that's with a 60Mb/s card. I shoot RAW so each image was 20+Mbytes in size.... It would not have been a problem had I been in JPEG mode...
 
mark1616 said:
You still must have shot a pretty good number of shots of the train before getting the buffer full.
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Just tried it now and it gets to 14 shots before the card slows it down. Sandisk 8G Extreme 60Mbytes/sec card.
 
arad85 said:
Took a dozen or pics of a steam train last week as it went past. By the end of the bust I was waiting and that's with a 60Mb/s card. I shoot RAW so each image was 20+Mbytes in size.... It would not have been a problem had I been in JPEG mode...
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The write speed of the card won't help you too much when compared to the increased processing time caused by upping the Iso. Higher Iso values will be a significant hit on your buffer due to the increased detail in the RAW embedded JPG.

Bob
 
Cheers! So the short answer is that it doesn't matter in the same way as it does on the 7D, apart from when shooting video.

Thanks for the responses :)

Matt
 
Canon Bob said:
The write speed of the card won't help you too much when compared to the increased processing time caused by upping the Iso. Higher Iso values will be a significant hit on your buffer due to the increased detail in the RAW embedded JPG.

Bob
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Why would increased ISO slow processing for RAW images? I thought the whole point was that no/minimal processing was done. Just tried it at ISO 100, shutter 1/500, manual focus with the lens cap on and the slowdown started at 15 shots...
 
digitalfailure said:
I've had no issues using Sandisk 16gb udma6 cards in my 5d2
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Df thanks - which speed ones are those? The 300x ones? :)
 
arad85 said:
Why would increased ISO slow processing for RAW images? I thought the whole point was that no/minimal processing was done. Just tried it at ISO 100, shutter 1/500, manual focus with the lens cap on and the slowdown started at 15 shots...
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As stated, it's the embedded JPG that is the cause.
Whilst it's true that the RAW data has minimal processing, each RAW file has an embedded JPG that does require processing. The embedded JPG will have more noise at higher Iso's and hence be a larger data size requiring more processing to achieve the compression.

Hope that's clarrified it....I know what I mean but maybe not explained the best way.

Bob
 
Missed that bit Bob, but as I say, still ran into issues at ISO 100 ;)
 
arad85 said:
Missed that bit Bob, but as I say, still ran into issues at ISO 100 ;)
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Your 15 shot burst is 1 shot above Canon's expection for a RAW only burst on the 5DMkII so you're doing well. The 1DMkIV ups this to 28 RAW's before filling the buffer and the 1DMkIII tops the lot with 30 shots....beating the MkIV by virtue of the lower sensor resolution.

Bob
 
digitalfailure said:
Dunno :shrug:

It just says 90Mb/s on them.
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Thanks that helps :)
 
I would second the advice that you should be fine with 30MB/s Sandisk Extreme III (or Ultra as they have now been re-branded) for 99% of all situations.

With respect to the issue of high ISO RAW's. It isn't necessarily the high ISO that is the problem, it is the level of detail in the image. Even RAW's use lossless compression and a high detail shot (regardless of ISO) is going to produce a bigger RAW file than an image with lots of big uniform easily compressible blocks of colour/content (gross simplification but it gets the point across). A high ISO shot is more likely to contain lots of luma and chroma noise which effectively is detail and has the same large resultant file size. So ultimately large RAW files will fill the built in buffer more quickly and need to be written out to the card where the card speed bottle-kneck will become apparent, even with a low headline fps like the 5Dmk2.

For info, I've had RAW files in excess of 42MB and as little as 8MB from the 5Dmk2.
 
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