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Archive 2012 · 1D mark IV memory cards
  
 
Jeff Winters
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p.1 #1 · p.1 #1 · 1D mark IV memory cards


Can the 1D mark IV take advantage and benefit from the fastest CF memory cards?


Dec 20, 2012 at 09:27 PM
davekone
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p.1 #2 · p.1 #2 · 1D mark IV memory cards


You can see from the link below that the latest card at the time 1000x did have a noticeable speed difference. Going from a 600x card to a 1000x card yields a 16% increase in speed. You will have to decide if the price difference is worth the increased speed.

http://www.robgalbraith.com/bins/camera_wb_multi_page.asp?cid=6007-10549



Dec 20, 2012 at 09:42 PM
Lars Johnsson
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p.1 #3 · p.1 #3 · 1D mark IV memory cards


My test

I got a few new cards so I did a new test. My new Transcend cards 400x which are UDMA 7 cards today are a lot faster than the UDMA 6 version of the 400x card. Both Transcend and Sandisk have updated their cards from UDMA 6 to 7 without saying anything. And the new cards that look the same except the 7 or the Video Performance Guarantee (VPG) pic.
It's 30 sec shooting with RAW in my Canon 1D4. All settings are the same of course. But this time I had the lens on MF and also the camera in M settings to get everything exactly the same. I will do the same test with a 1DX when I buy that body.
ISO 100
1/4000 sec
f/5,6
lens EF 24L
Gitzo tripod RRS head

Conclusion: UDMA 7 cards are improved a lot. And there is a huge speed increase when comparing them against the same older card with UDMA 6. Even when the makers have the same speed on the card.

Transcend 128GB UDMA 7 1000x----- 143 shots in the 30 sec burst
Transcend 64GB UDMA 7 600x------ 133
Lexar 128GB UDMA 7 400x ---------- 118
Transcend 64GB UDMA 7 400x ---- 113
Sandisk 32GB Extreme Pro --------- 113
Transcend 32GB UDMA 7 400x----- 112
Transcend 64GB UDMA 6 400x ------ 82
Duracell Pro photo 32GB 600x -----79
Sandisk Extreme III 16GB--------- 75
A-Data 533x --------------------- 60
Transcend 32GB 133x ------------ 52
Transcend 16GB 133x------------- 46



Dec 21, 2012 at 06:06 PM
dolina
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p.1 #4 · p.1 #4 · 1D mark IV memory cards


I'd go with the 64GB Lexar 1000x CF cards.

davekone wrote:
You can see from the link below that the latest card at the time 1000x did have a noticeable speed difference. Going from a 600x card to a 1000x card yields a 16% increase in speed. You will have to decide if the price difference is worth the increased speed.

http://www.robgalbraith.com/bins/camera_wb_multi_page.asp?cid=6007-10549




Dec 21, 2012 at 06:19 PM





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