LLC Loc: Ontario, Canada

You can try free exif tool ExifTool by Phil Harvey. Small by provides complete information...

http://exiftool.sourceforge.net/
https://exiftool.org/

Bubbee Loc: Aventura, Florida

I use Photoshop mainly, but Google Photos displays and even cell phones give the info. Click on those 3 vertical dots. Wherever you see the option for info or details when you click on the photo.

gvarner Loc: Central Oregon Coast

You will soon get lost in the techno-wilderness if you don’t back up and get some basic understanding of RAW and JPEG files and EXIF data. Maybe join a camera club and seek mentoring from one of the members. You’re gonna get lost in LR and Photoshop without that grounding.

Jack 13088 Loc: Central NY

You asked a perfectly reasonable question that opens an enormous can of worms. Beginning with the name Exif which is an acronym but it is not cool to capitalize as EXIF (Even though the Apple spelling checker insists on capitalizing.)

I refer you to Wikipedia articles “Exif” and “ExifTool” which are the source of my “expertise”. Try them. Like many Wikipedia articles the beginning is readable by mere mortals before turning to details understandable by subject matter experts.

The standard calls for including basic information in a standard format plus “MakerNote data” in proprietary format. It is in the MakerNote data where all the good stuff is to be found. Luckily Nikon is among the several brands where the data has been thoroughly decoded. That is where Nikon puts the shutter count. Canon is among the makers who do no include shutter count (my speculation).

In a Geeky way “ExifTool” an open source software library code breaker is where the MakerNote data is accessible. If you were to be down with Pearl scrips go to it. If not an executable is available for both Windows and Apple where you can explore that data albeit tediously. Adobe and the other tools do not typically venture into MakerData because it is vendor specific. If you are after shutter count Google is your friend. At one time I wrote a script to create a unique photo identifier that was a concatenation of serial number with shutter count. But with LrC it was OBE and lost.

tdozier3 Loc: Northern Illinois

On my D7500 and D500 I can view file information by displaying the image on the screen then pressing up or down on the directional pad on the rear of the camera. I would assume the D7100 would be the same.

47greyfox Loc: on the edge of the Colorado front range

Same here. You can also select the photo and hit the “I” key. The Faststone Image Viewer is an excellent capable tool.

https://www.faststone.org/

jerryc41 Loc: Catskill Mts of NY

Download Irfanview (free) with the plug-ins. Pressing I and/or E when an image is on the screen will give you lots of info.

And -

http://www.makeuseof.com/tag/exif-photo-data-find-understand/
http://exifdata.com/
https://www.howtogeek.com/289712/how-to-see-an-images-exif-data-in-windows-and-macos/
https://www.labnol.org/software/exif-data-editors/14210/
http://exif.regex.info/exif.cgi

Nickaroo

You should be able to see it in Lightroom, providing that is where you edit. Plus, as stated here, make sure that you have Metadata on. I'm in 2 Birding Groups and if you don't post the metadata, then you post will be denied. I meant to say EXIF Data instead of just Metadata, I think that you can solve your problem very easily.

SuperflyTNT Loc: Manassas VA

I have to love that you claim that it’s uncool to capitalize EXIF and then tell us that the bulk of your knowledge about EXIF comes from Wikipedia. That makes you the consummate internet expert on EXIF. The truth is Exif is fine, but so is EXIF, just like Jpeg and JPEG are both ok. On the other hand RAW is incorrect but not worth busting chops over.

bikinkawboy Loc: north central Missouri

UserID, makes sense. Thanks!

jerryc41 Loc: Catskill Mts of NY

"(EXchangeable Image Format) Descriptive data (meta-data) in an image file that include the date the photo was taken, resolution, shutter speed, focal length and other camera settings. Developed in 1995 by JEIDA for JPEG images, EXIF data was later added to TIFF, RAW and other formats. Most digital cameras support EXIF and save the data in the file headers. However, when an image is edited, the EXIF data may sometimes be removed by the software."
PC Mag

cahale Loc: San Angelo, TX

I think he's asking where to find it on the camera itself. Short answer - you can't.

Jack 13088 Loc: Central NY

I got the fish on the line.

BigOldArt Loc: Seminole, FL

Plain old Windows 10 Photos app will give you basic information from the EXIF
In Windows Explorer
-- right click the file that has the photo.
-- <open with> <Photos>
-- right click on the image
-- <File Information>

You can slide down in new window and <open map> to get a better idea where you took the photo.

druthven

For the shutter count, take a photo, upload it to your computer. Go to Camera Shutter Count.com, choose the file with the photo and upload. Give it a few seconds and your shutter actuations will appear. Simple.