It is early spring and, at least here in the mid-Atlantic and farther north latitudes, the outdoor landscape is looking rather bleak right now. The snow is gone and the green has not yet come. That makes this is a great time of the year to focus on indoor photography and interior architecture is one great option. And when photographing interior architecture, an ultra-wide angle lens becomes especially useful.
Most of us photographers love curves and the Italian architecture in the Pennsylvania House Chamber is filled with them. While cameras are not permitted in this space when the house is in session, selecting a non-session day cleared that roadblock. Moving to one side of the balcony gave me an angled view across the room that sent ceiling lines arching into the frame.
Got 12mm in your kit? That is the full frame focal length you will need to capture this image and many others like it. The Sigma 12-24mm f/4 DG HSM Art Lens on a full frame body executes this image (and those similar to it) extremely well. Even though the aperture used was not extremely narrow (f/8), the entire image is within the 12mm depth of field and the Canon EOS 5Ds R's extreme resolution was fully utilized with essentially no visible impact caused by diffraction. This image is tack sharp from corner to corner.
Notice that the columns on the sides of the image are vertically straight (or very close to being so)? While it is easy to have these lines angling inward or outward when using a focal length this wide (and that is sometimes a desired effect), a vertically level camera will render vertical lines parallel to each other and these lines can be parallel to the frame borders as long as the camera is horizontally leveled.
Spend your money on gear, not admission fees. One of the great things about the PA state capitol building is that admission is free. While you may not live close to this specific capitol building and will not likely find it alone to be worth a plane ticket or all-day drive to get there, your own state capitol building may offer the same deal. I didn't check all 50 USA state capitol buildings (or any outside of the USA), but many others also have free admission.
Get your ultra-wide angle lens and go photograph some interior architecture!