Hope I'm not exercising an old and tired debate, but if you only had the cash for a good scope or bins which would you opt for? My hobby is painting birds. Over the years I have relied on my own photography for reference. I recently indulged in a used Canon 500mm IS F4 for use in hides, to reach distant waders ect. The lens is brilliant but the pain I have developed in my shoulder from lugging the beast around is keeping me up at nights. I plan to sell the lens and supplement my reference gathering using my shorter, lighter lens and field sketches. Grateful for your thoughts on bins vs scope as I'm out of practice with both.