Sean, I've used the 24mm Mamiya for 2 years now. It helped create a number of images that I couldn't have made any other way. Rarely do I used the images uncorrrected, I use Image Align to resolve the barrel distortion issue. Unfortunately, the edges lose alot of image integrity (sharpness decreases, chromatic aberation problems are magnified). If you allow for that in your crop and come in a bit left and right, it works very well (and still gives a greater field of view than anything else). I'm now experimenting with the 28mm that just came out. It out performs the 24 easily in terms of sharpness and lack of barrel distortion. At this time, it has communication issues with the P45 when used in manual mode (exposure). Hopefully, Mamiya will resolve this issue shortly. Attached are some examples. Jim [attachment=2899:attachment][attachment=2900:attachment][attachment=2901:attachm
ent]