Bad quality screenshots.

Do you have a sample of what your screenshots look like?

That's a weird issue I can't say I've seen before. I know the Sims 3 screenshots save as JPGs instead of PNG so the quality isn't as good but it shouldn't appear as if Anti-aliasing has been turned off. Has it always been like this for you? Did you recently reinstall the game or has something changed since the last time you played?

I haven't used the game's in-game camera for a very long time. I prefer using a paid version of Fraps for screenshots because I'm a snob for quality... but still, using the game's camera shouldn't appear as you're describing. Yes, might be useful to share an example with us as Gracey suggests.

This sounds like a problem I had last year while playing in fullscreen mode. I was taking screenshots to compare different antialiasing options (the game's edge smoothing, NVIDIA Control Panel's antialiasing, and Reshade's antialiasing), but not even the game's own edge smoothing would show up when I took the pictures in fullscreen mode. I had to either use other screen capture software or take pictures in windowed mode to see antialiasing at all. I normally play in windowed mode anyway, but I thought it was really weird.

Thanks for your replies everybody. I tried uploading a picture but the forum shrinks it so you can’t really see the problem. I will try the windows mode and see if that changes anything.