I think quite a few photos on here are taken by professionals - the auction house photos etc.

However, if taking pictures of your guns, I find it's not so much the camera but getting the LIGHT right so it removes the shadows and "sun spots" but gives enough detail.

I have never used a high end camera, most middle of the road digital cameras - mine is currently 5 years old.

Use a Tripod

Take the photos outside on a Bright but CLOUDY day (so you don't get sun spots !!!).

Just my HO but it works for me.