The Rodenstock 300mm APO Sironar W is an incredible lens that is nothing short of amazing in terms of coverage but also in terms of sharpness and resolution. We use this as our main copy negative lens for making 8×10 negatives that we enlarge up to 40×50 silver gelatin prints.
I love soft-focus Pictorialist images, but this lens is the exact opposite of that, which is excellent. I have verified coverage on my 16×20 and 8×20 cameras, but I think it might cover 20×24, but I need to verify. This lens is tough to find, and if you do find one, crack open the piggy bank and get a box of tissues to dry your tears when you have to write that check. I bought mine brand new back in the day before the hipsters started thinking analog photography and large format was “cool” and drove up the price of this lens and all analog gear.
If you are a photographer or interested in learning about analog photography, we have an Analog Photography Membership Community that is the only community of its kind where you can learn and explore analog photography in depth. I also have an extensive training library of video workshops and guidebooks if you prefer to download the videos and books for offline use.
I have a dedicated Ultra Large Format Photography playlist on my YouTube Channel.