Mostly the game works perfectly for me on Windows 10 with a modest 2GB Nvidia K620M and a core i7-5500U, but I've taken various "photos" and when I try to access them, it only recognizes my clicks on a few of the thumbnails, and there's no way to view the others. Is anyone able to view all your photos?

I have the same problem.
I have more photos than what is shown and I can't scroll through them.
Another problem is taking photos of opened books/sheets.
When you hit space, the book starts closing, then the picture is taken, and I can't view those pictures
from the picture browser.
(win 10 gtx 970)

The photos seem buggy for everyone.

I just resorted to taking pictures with my phone. Not as good, but it works. And hey, that's how I usually play all my adventure games to begin with.

Keep some paper around as well, though. At times you'll need to actually memorize some stuff.

It seems like there's a problem when taking/saving a photo so that the resulting jpg file on the disk has size 0 or contains a completely black image.
The photos are stored on disk in C:\Users\YourUserName\AppData\Local\Obduction\Saved\SaveGames\Slot0\, there you can delete the broken images and the corresponding thumbnails and then the photo view in Obduction will work again as expected. (It did so for me.)

I think they already release an update to fix that bug on steam:
https://steamcommunity.com/games/306760/announcements/detail/892098092690126071
"Improvements for screenshot functionality (Game no longer hangs, can take screenshots of books)"

Let's hope they update the GOG version today.