dggeiser Loc: Pittsboro, NC

Just got my D750 and love it. I did a check on the EXIF data and found that the shutter count was at 119 and the picture file number was 80. I checked the first pictures I took and the shutter count and picture count were the same. Seem like I'm getting some extra counts. I did not reset the camera setting or reset the sequence number or create a new folder. Can anyone explain?

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jethro779 Loc: Tucson, AZ

Were you shooting in raw + jpg?

dggeiser Loc: Pittsboro, NC

I did some as raw + jpg and other just jpg. The picture I posted was a jpg only. I did not think that the file type should effect the shutter count.

jethro779 Loc: Tucson, AZ

I don't think it does except when you shoot raw & jpg; because you are saving 2 pictures with one shot. I know when I shoot raw and jpg & I download with Nikon transfer 2 the picture count includes both formats. Like I take 86 pictures. I get 86 .NEF & 86.JPG files and the count is 172 pictures.

Apaflo Loc: Anchorage, Alaska

The JPEG and NEF files both use exactly the same number. That number is not related to the shutter actuation count.

The serial numbers used for file names can be reset in several ways, and one may or may not actually be aware of having done that.

The shutter actuation count is just exactly that. Actuations for multiple exposures (HDR etc) are all counted. So will an actuation to hold the mirror up for sensor cleaning.

dggeiser Loc: Pittsboro, NC

I would agree that you can reset the file names, but that has not happen. This is a new camera and I checked the shutter count on the 1st pictures and it was the same as the file name. I took about 80 pictures and now I have 39 more actuations. I did not do HDRs or mirrors up sensor cleaning. Did turn it on/off multiple times, but that did not up the count.

Apaflo Loc: Anchorage, Alaska

You would probably know if you've been doing something that trips the shutter extra counts.

But you might be totally unaware of when the serial number is reset. Check out custom setting D6: (see page 340 in the User Manual).

Otherwise, you'll just have to watch to see when and why it happens to figure it out. It certainly is not anything to be concerned with.

MT Shooter Loc: Montana

Using two different cards will affect the file numbering, but not affect the shutter count.
Taking a shot and saving as JPG and NEF does NOT result in two shutter counts as the shutter only trips once, its just the camera is saving the unprocessed image AND the processed JPG image made from it.

dynaquest1 Loc: Austin, Texas

Agree. Shutter actuations is a continuous count of a mechanical action (shutter opening and closing). Maybe someone grabbed your new camera, put in their own SD card and shot some pictures without your knowledge. Keep an eye on it and see if it happens again.

Download the free program (Opanda IExif) to keep an eye on shutter count.

THRaleigh Loc: NC

Have you used the live view? Mostly the extra counts is due to shifting of live view.
When you switch on and off the live-view,there is an extra count due to mirror flipping. You can check this by taking a picture and switch to live view then switch off live view and take another picture, you will see the second picture has an extra count. Setting raw+JPEG is only count as one, since the mirror and shutter curtain only actuated once.

dggeiser Loc: Pittsboro, NC

TH, you got it. LV on and off ups the count. On my previous D7000 I did not use it very much because it did work all that well, but this D750 it is great and I had been using it lots.
So, the shutter activation is more than just a count of the shutter, it includes mirror movement.
Thanks to all for the responses. So much to learn with all the new technology. Love it!

dynaquest1 Loc: Austin, Texas

That makes sense. The mirror flipping up and down is likely a better mechanical trigger (for counting shutter actuations) than the shutter curtain opening and closing. Live View makes those two actions somewhat independent.

MT Shooter Loc: Montana

Shutter count does NOT count mirror movement.
When you use Live View, the shutter has to open to expose the sensor in order to view the image being monitored. Then when you take a picture, the shutter has to reset, open, and close again. That results in two shutter counts when taking stills in Live View. Even if you do not take a picture, simply using Live View will result in one shutter count as the shutter has still been opened and will have to close when Live View is turned off.
Shutter count only counts the exact number of time that the shutter blades cycle. Mirror movement has to take place before the shutter can cycle so the shutter count will reflect the number of times the mirror is flipped up also.
If you shoot in MUP (Mirror Up) mode, then the actions are one each, but results in one shutter count because you are separating two distinct actions that normally occur together. The first press of the shutter button raises the mirror, but the shutter does not cycle until the second press of the shutter button. Thus it adds ONE to the shutter count, not two.

THRaleigh Loc: NC

Carter, You are right. I should say that switching to live view flip up the mirror and open the shutter curtain.