Mac wrote:
Both are very good lenses and I don't think you would be disappointed with either one. The 24-85mm is slightly faster on the short end and slightly slower on the long end. In addition to having a longer reach the 24-120mm has 9 aperture blades to the 24-85mm having 7 blades. The 24-85mm is smaller and lighter than the 24-120mm.
Whatever you decide, I'm sure you will be happy with your choice. Enjoy.
Would increasing the shutter speed on the 24-120 compensate for the low light? I had made the comment earlier but still ask the question