Many friends on a retro gaming forum I regularly visit had a discussion about the resolution of the "old version" (the classic mode included in the remastered version). I figured I'd share it here, just in case some of you might be wondering about the same thing. So here's what it came down to:

The original game's resolution was 320x200 (which is 1,6:1 or 16:10 if you will).
You can see that on basically every screenshot out there:

http://abload.de/img/dosbox320x200elk1y.png

The remastered version's classic mode, however, has the game in 320x240 (which is 4:3).
It looks like this:

http://abload.de/img/dosboxcorrectbetteraujz4.png

Now some people might think that this looks stretched in height, of course. Some users complained about this, stating that this is not how they remember the original game from back in the day.

Now the community manager at Double Fine answered this question, saying:

People have pointed this out before, it's not an error, as our tech folks have explained to me before:

The PC game was authored for VGA which supported the resolution of 320x200 pixels. When you read "320x200", that's the Storage Aspect Ratio; The internal [width]x[height] dimensions of square pixels. Most displays of that time were 4:3 aspect ratio so when the game is thrown to the display, it's thrown at an effective Display Aspect Ratio of 320x240. Therefore, the rendered pixels are stretched a little higher with a pixel aspect ratio of 1:1.2."

Here's a framebuffer of the original with square (1:1) pixels: Bernard is squished

http://i.imgur.com/pXItOj8.png

Here's a framebuffer of the original with corrected (1:1.2) pixels: Bernard now looks correct

http://i.imgur.com/0hGyJIn.png

Here's a framebuffer of Day of the Tentacle Remastered at 960x720 in which we correct the pixel aspect to 1:1.2:

http://i.imgur.com/GIPtGaW.png

Source: https://www.reddit.com/r/Games/comments/4bcdi7/day_of_the_tentacle_remastered_gameplay_and

So there you go. ;)

Double Fine is 100% correct on this. Also, when you play 320x200 games in DOSBox, you have to set aspect=true to get 4:3 display.

Good info, thanks!

The pure existence of this thread makes me feel old.
I thought, that was common knowledge no one would even consider the need to explain that. Well, that was probably some decades ago, I guess.

guy 1 was like: game's resolution is 320x200, i have no clue about pixel stretching, therefore 1,6:1 must be the correct aspect ratio for the game, in 4:3 it looks stretched and wrong.

guy 2 was like: you're right, i have an old 4:3 CRT monitor that doesn't stretch the image as it should be, therefore you must be correct.

guy 3 was like: ermagerd, i haz no clue about the technical background, but me wantz to explain why the stretched picture is actually the correct one.

guy 4 was like: chill the f*ck down, here's a technical explanation, u happy now?

it was fun.