Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies. Read More.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS General Gear Talk Data Storage, Memory Cards & Backup
Thread started 31 Aug 2017 (Thursday) 21:44
Prev/next
sponsored links
(this ad will go away when you log in as registered member)

CF vs SD Cards

 
cristphoto
Senior Member
846 posts
Joined Feb 2010
Maryland
Post has been last edited 13 days ago by cristphoto. 2 edits done in total.
Jan 21, 2018 23:23 |  #16

I just noticed this thread. This is a response I posted to another thread. Hope it helps.


I have the 5D3 and 5D4 bodies both with the latest firmware. Here is data from a test I just completed:

Both cameras set to RAW, manual exposure, 1/5000, lens wide open, lens set to MF, lens cap on

5D3 w/Lexar Professional 133x card 15 shots until buffer fills, 26 seconds for buffer light to go out
5D3 w/Lexar Professional 633x UHS1 card 15 shots, 16 seconds

5D4 w/Lexar Professional 133x card 20 shots, 38 seconds
5D4 w/Lexar Professional 633x UHS1 card 24 shots, 13 seconds

I performed all the above tests twice and numbers were virtually identical. In actual use when shooting a couple series of RAW bursts my 5D3 can go into slow shooting mode from time to time when shooting RAW. I've never had this happen when using the 5D4. It just keeps on shooting. That's not to say if I (obviously) shot a long enough burst it wouldn't stop. That's just not real world shooting for my uses. Hope this helps.


5D MKIV, 5D MKIII, 1D MKIV, 24L II, 35L, 50L, 85L II, 100L Macro, 135L, 300LIS, 16-35L, 24-70L, 70-200LIS, 100-400LIS

LOG IN TO REPLY
Wilt
Reader's Digest Condensed version of War and Peace [POTN Vol 1]
Wilt's Avatar
39,759 posts
Gallery: 1 photo
Joined Aug 2005
Belmont, CA
Post has been edited 1 month ago by Wilt.
Jan 22, 2018 00:15 as a reply to cristphoto's post |  #17

I presume your testing was only CF memory? Valuable service to photographers, ever since Rob Galbraith quit doing testing! Thx.


You need to give me OK to edit your image and repost! Keep POTN alive and well with member support http://photography-on-the.net/forum/donate.p​hp
Canon dSLR system, Olympus OM 35mm system, Bronica ETRSi 645 system, Horseman LS 4x5 system, Metz flashes, Dynalite studio lighting, and too many accessories to mention

LOG IN TO REPLY
cristphoto
Senior Member
846 posts
Joined Feb 2010
Maryland
Post has been last edited 29 days ago by cristphoto. 3 edits done in total.
Jan 22, 2018 15:14 as a reply to Wilt's post |  #18

No - these were SD card tests. The 5D4 supports UHS1 cards while the 5D3 doesn't.

For CF cards the 5D4 and 5D3 both have bursts of 36 shots and take about 2 or 3 seconds to clear buffer. MUCH quicker than SD cards.This was with a Lexar Professional 1066x UDMA7 card. (same test conditions as previous post). These results were the same since both bodies support the fastest CF cards.


5D MKIV, 5D MKIII, 1D MKIV, 24L II, 35L, 50L, 85L II, 100L Macro, 135L, 300LIS, 16-35L, 24-70L, 70-200LIS, 100-400LIS

LOG IN TO REPLY
davesrose
Title Fairy still hasn't visited me!
3,132 posts
Joined Apr 2007
Atlanta, GA
Post has been edited 1 month ago by davesrose.
Jan 22, 2018 16:58 |  #19

https://www.cameramemo​ryspeed.com/ (external link)

This is a pretty good site for memory speed tests with SD or CF memory on camera models. Even though UHS II cards are becoming common, fewer cameras have slots that fast.


Canon 5D mk III , 7D mk II
EF 135mm 2.0L, EF 70-200mm 2.8L IS II, EF 24-70 2.8L II, EF 50mm 1.4, EF 100mm 2.8L Macro, EF 16-35mm 4L IS, Sigma 150-600mm C, 580EX, 600EX-RT, MeFoto Globetrotter tripod, grips, Black Rapid RS-7, CAMS plate and strap system, Lowepro Flipside 500 AW, and a few other things...
smugmug (external link)

LOG IN TO REPLY
eelnoraa
Goldmember
1,745 posts
Joined May 2007
Post has been edited 1 month ago by eelnoraa.
Jan 23, 2018 19:00 as a reply to cristphoto's post |  #20

A few notes here.

First, the so called 133x or 633x denotation is generally referred to as "transfer speed". And this is actually sequential read speed. It doesn't necessary mean, and most likely, does NOT mean the sequential write speed.

For Lexar 133x (20MB/s) card, this type of card matches the 5DIII interface. Read speed will be 133x or 20MB/s. But there is a good chance that write speed is substantially lower, maybe just above 10MB/s to qualify for Speed Class10. Spec is hard to find for this kind of card now.

Edit: Just find the 16GB Lexar Profession 133x spec, minimum write speed is 10MB/s.

For the 633x (translat to 95MB/s)card, the speed is actually the UHS-I interface limitation. It is very easily to saturate this interface speed with read. However, for write, you will notice lower capacity card can't go nearly as fast. 16-128GB can only write at 20MB/s. 256 and 512 can only do 45MB/s. the earlier group is well within 5D3's interface limit.

So I am not surprise you get better performance with 633x card because it is fundamentally faster (20MB/s vs 10MB/s at least with 16GB level) even at the same 5DIII interface.


5Di, 5Diii, 28, 50, 85, 16-35II, 24-105, 70-200F2.8 IS

LOG IN TO REPLY

1,309 views & 1 like for this thread
CF vs SD Cards
FORUMS General Gear Talk Data Storage, Memory Cards & Backup


Not a member yet? Click here to register to the forums.
Registered members get all the features: search, following threads, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, settings, view hosted photos, own reviews and more...


AAA

Send feedback to staff    •   Jump to forum...    •   Rules    •   Index    •   New posts    •   RTAT    •   'Best of'    •   Gallery    •   Gear    •   Reviews    •   Polls

COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies. Privacy policy and cookie usage info.

POWERED BY AMASS 1.4version 1.4
made in Finland
by Pekka Saarinen
for photography-on-the.net
Spent 0.00122 for 6 database queries.
PAGE COMPLETED IN 0.02s
Latest registered member is Bevo
853 guests, 301 members online
Simultaneous users record so far is 6430, that happened on Dec 03, 2017