New M50 owner- memory disappeared! Help?

[bigbrother]

Hey all! Just got my new M50 and everything was great today. The only thing is, I did some very light playing around, trying out the different modes, very minimal setting adjustment (things like preview timer), etc., and somehow my memory/shots available has seemingly permanently dropped by ~15%. I have no idea how or what I might have done.

(I'm using a 64 GB SanDisk Extreme PRO SDXC UHS-I card.)

When I started, I had ~6800 shots available at the default image setting, which as far as I can tell is Large, no RAW, 6000x3000 or whatever the res is.

I took a few different shots and 1 short movie, maybe 100 items in total, and when I looked again (after deleting the movie) I had 5800 available. I looked through all the settings and couldn't tell what I might have changed. I then tried everything- deleting all the shots, resetting the camera's settings, deep formatting the mem card, and no matter what I did, I still had 5800 shots.

How on Earth did I lose the capacity for 1000 shots?

The memory available on the card is the same as when I started- 854kB of 59.something GB.

I'm guessing it's something I set but I have no clue at this point.

Your help is much appreciated! Thanks!

[Ray-uk]

You haven't lost anything. the number of available shots is a rough estimate because the amount of memory an image uses varies with image contents. Probably the camera has made a more realistic estimate.

Anyway,are you really likely to take more than 5800 shots before you download the contents of the memory card.

[shadowsports]

@bigbrother,

Ray-UK has givien excellent advice.  I agree with him regarding use.  I back up my photos after each day of shooting.  Having 2 sets is safer than one.    

[kvbarkley]

Actually the determining factor is ISO. Change it from 100 to the higher numbers and watch the number of shots go down.

[bigbrother]

That was it! (Was actually recommended on another forum and just tried it.)

For some reason Auto ISO increases the estimated memory size of shots.

[Waddizzle]

---

@bigbrother wrote:

That was it! (Was actually recommended on another forum and just tried it.)

For some reason Auto ISO increases the estimated memory size of shots.

---

No, it doesn't.  It is just a happy coincidence.

[kvbarkley]

Because it assumes that the highest value you have set is the worst case.

Waddizzle, I am not sure what your point was. ISO is the determining factor for the estimated image size. Go ahead and try yourself.

[Waddizzle]

---

@kvbarkley wrote:

Because it assumes that the highest value you have set is the worst case.

Waddizzle, I am not sure what your point was. ISO is the determining factor for the estimated image size. Go ahead and try yourself.

---

???  ISO Auto didn't fix anything.

My point was simple.  Setting ISO to Auto was a coincidence. Yes, it raised the ISO value.  But, using ISO Auto could have just as easily lowered lowered the ISO value.  Setting ISO to Auto did not "fix" anything.

[Johnw1]

I bet it is a change of image size not auto ISO.. Jpg is going to be a smaller file v RAW for example.

[kvbarkley]

Guys, do the experiment yourself. Watch the image count as you change the ISO, it clearly adjusts in an inverse relationship.