>>4374855>>4375176>I can't get this qualityThose have quite moody, lighting. The look you want is evening sun, single point perspective. With single point perspective you really need to pay close attention to your lines in your image being straight, and hopefully you can find some left-to-right symmetry as well. In the first image, I would have moved the camera a bit to the right so the beam in the centre of the ceiling is in the centre of the image. Doing this also makes it easier to get all of your vertical lines straight.
>What lens do you think I can use to get a photo like thisAperture won't matter, since you'll ideally be shooting at f/8 or 9 anyway. I would get a wide angle zoom. Personally I use a 16-28mm on full frame. That way you have an extra variable you can change when framing, and you dont need to constantly be changing lenses. If you're shooting rooms in a normal sized house, wider is really useful. I wouldnt want to go any longer than 16 on the short end. Also, always use a tripod. I can't stress enough how important it is to get your lines straight. Even if I get something as good as I can in camera, I will still end up using a bit of perspective distortion in LR. Lens correction is also very useful.
>I'm about to buy a Tilt-Shift lens, and I want to know if that lens would help me solve the problemTo fix edge sharpness? No, tilt-shifts are for a unique sort of perspective correction, which can be done in post albeit at a slight cost to image quality in affected areas. Part of the reason they're not really making them anymore. As the other anon said, pretty much any wide-angle lenses are going to have some softness around the edges. The best remedy for this, if you're willing to spend the money, is a modern mirrorless full frame camera with a modern expensive lens. The shorter focal flange distance aids a bit in the construction of wide angles versus DSLR counterparts. That and they're just newer lenses with better optics.