Part one here.......https://www.cointalk.com/threads/commemorative-gold.392260/ When last we left green he was bemoaning his shortcomings in image quality regarding his first set of classic gold. In this installment he's less bemoanful, save for the first two and last two images.
Concave/convex coin photography is befuddling. The lighting, of which, is quite challenging in eliminating hot spots. Many thanks for looking chaps.........
Not sure what to suggest for the sportsball coins. How is anyone supposed to image a deeply convex or concave surface with a flat focal plane? As far as I'm concerned, that shape constitutes pre-mint damage (intentional defacement by the design committee).
Some optical designs do produce a curved focal plane -- but those are usually used with another optical element that flattens it out. I don't know where you'd go to buy a lens that can focus on an entire concave surface, and you'd need a completely different design to image the coin's other face.
