D300s SDHC card capacity
I just received my D300s this week and I'm seeing something curious about how many images the manual and camera tell me a card can hold. I see in the manual that the average size of a 12-bit losslessly compressed RAW image is about 12MB, and I can confirm that from my tests. It also says that a 4GB card should be able to hold 197 of those images, which multiplies out to just 2.5GB. Sure enough, my camera, with a 16GB SDHC card, says that it can hold only 795 images, coming out to 10GB. I can understand that they want to be conservative, but sheesh!
If I pop the 16GB card into a card reader, it says that there's just about 16GB free (using 1GB==1000000bytes). It's really empty, and really a 16GB card. When I first saw the discrepancy on my camera, I figured that I'd configured a setting in a strange way. Now that I see that my numbers sync up with the manual, which assumes "best case" settings, I think they're simply using fuzzy math.
As I was shooting today, I could see the number "correcting" itself periodically and not decrementing for every shot, so I have every reason to believe that it'll actually fill the card. It just feels like somebody setting their alarm clock 30-60 minutes ahead to make sure that they get to work on time.
- Canon EOS M58.8%
- Panasonic G85/G803.3%
- Panasonic FZ2500/FZ20001.9%
- Panasonic LX10/LX151.2%
- Panasonic GH5 development3.6%
- Sony a99 II15.9%
- Nikon KeyMission 170 and 801.0%
- Fujifilm GFX 50S development28.3%
- Olympus E-M1 II development18.7%
- Olympus E-PL80.1%
- Olympus 25mm F1.2 Pro1.5%
- Olympus 12-100mm F4 IS Pro1.9%
- Olympus 30mm F3.5 Macro0.1%
- Sigma 85mm F1.4 Art3.6%
- Sigma 12-24mm F4 Art2.6%
- Sigma 500mm F4 DG OS HSM Sport2.4%
- YI M12.2%
- GoPro Hero50.8%
- GoPro Karma drone2.2%