Sunspots are nicely visible now and I caught them with my DX sensor Nikon D40 mated to an old Sigma 500 mm f/8 reflex lens.  After trying out my cameras with two achromatic refractors, I realized that this lens is almost the same focal length but it has an *infinity focus mark* on the barrel!  I wish telescopes had that LOL.  This view has been cropped and enlarged.