I recently wrote a post about the Lumix GX1 camera, and how I'm learning to take insanely great photos.
I love the GX1. Here's a write-up I posted after my first 14 days using the camera. However, one thing that's frustrated me has been the slow write-speed of the 16 Gig Class 10 MicroSD card I was using. So I set out to see if I could find a better solution.
I purchased a 32 gig 45mbps for $32.95 card, which writes photos 4.5x as fast as the Class 10 card, as well as a 16 gig 95mbps card for $40, which in theory is 9.5x as fast. But how would they perform in real-world tests? And was the faster card worth the extra cost for only half the space?
The answer is that the 45mbps card is a very worth upgrade, but the 95mbps card doesn't add much additional value. Here are the details of the tests I ran:
In this first video, I describe the problem and I show how the different cards perform generally.
In this second video, I run a test to see how many pictures I can shoot and write to the card in a 60 second period. The results were clearly in favor of the 45mbps card:
16 gig 10mbps card: 17 pics in 60 seconds
32 gig 45mbps card: 35 pics in 60 seconds
16 gig 95mbps card: 38 pics in 60 seconds
So while the 45mbps card was 2x as fast as the 10mbps card, the 95mbps card was only marginally better. My hunch is that this likely has more to do with the camera than the card -- the GX1 may simply not be able to take advantage of the faster write speed of the 95mbps card.
In this third video, I test to see how many seconds it takes to shoot and write three sets of 5 exposure shots. Again, the 45mbps card won:
16 gig 10mbps card: 54 seconds
32 gig 45mbps card: 26 seconds
16 gig 95mbps card: 24 seconds
This test produced the same results as the first test -- only a marginal improvement for the faster card.
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