Another Good Reason for updating 1DMkIV from 1.08 to 1.10
I was at Jim Neiger and Doug Brown's outstanding West Coast Flight Workshop last week.
I was using a pair of 1DMkIV at 1.08 (I had not updated to 1.10 yet). I was using Delkin UDMA-6 32GB and 64GB cards (Artie sells the 32GB). I was having a heck of a time holding the shutter release down and following terns leaving the dive into the air - just about the time they did the head(actually body) shake, the cameras would "hiccup/stutter" then attempt to refocus and start firing again. Something was wrong. Jim and Doug weren't having any problems - I could hear them firing away with no stutter.
I eventually learned to wait a bit so that I did get the headshake image before the first stutter but it was quite a PITA.
On the trip home, I read the notes on 1.10 firmware release, including:
Firmware Version 1.1.0 incorporates the following improvements and fixes:
1. Improves writing/reading speeds when using UDMA 7-compatible CF cards
....
I noted I did not have this problem with the UDMA-6 compatible Sandisk Extreme 32GB cards, which Doug uses (Jim uses the extreme pros). So it was Delkin card related (I tried several 32GB and 64GB cards -- all stuttered).
I did an upgrade on the first MkIV -- and now Delkin cards didn't stutter. Same card back to the MkIV remaining at 1.08 ...and it stuttered after 4-5 images, same as before. Upgrading that second MkIV -- no more stuttering while doing highspeed drive captures.
Problem solved. Something funny with my two 1DMkIV's at 1.0.8 with Delkin flash cards.
Fix is easy - go find the 1.10 firmware upgrades (somehow not on the CanonUSA or Europe sites over the past weekend - I got mine off the Thailand(English) site.