I inherited my dad's old Minolta kit containing 4 Minolta MC mount lenses. I have been playing around with them shooting macros using extension tubes on my Panasonic DMC G1. The 35mm/f2.8 is fairly sharp but requires me to be too close for insects, the 55mm/f1.7 is not as sharp but provides better working distance. However, the 100mm/f3.5 allows me to be back about 10" & still get decent magnification & IQ. Here I will provide an example from each lens; the camera is mounted on focusing rails on a tripod & the ISO set @ 400. 1. Green Pepper seeds on black felt, shot @ f16 with 35mm 2. Toothpicks, shot @ f16 with 55mm 3. Black Peppercorn in gator clip, shot @ f3.5 with 100mm New life for some old glass.