Version II is about 0.2 brighter than version I. Generally speaking, version II has slightly better border and corner sharpness than the previous version but nothing to write home about. Version II seems to be slightly worse than version I at 24mm. They are about the same at intermediate FLs (50mm to 70mm).
Canon EF-S 18-135mm f/3.5-5.6 IS Lens Review Canon EF 70-300mm f/4-5.6 IS USM Lens Review Canon EF 70-200mm f/4.0 L USM Lens Review The 24-105 lens is absolutely great, but 24mm on a crop body (everything other than a 5D or 1D/s) is not very wide. Zoom your current lens to 24mm and take a pic.
The full name of the instance from the review: Canon Zoom Lens EF 24-105mm 1: 4 L IS USM Ultrasonic Ø77mm Macro 0.45m / 1.5ft Image Stabilizer Canon Lens Made in Japan 4461761 UA0627: Basic properties: Dust and moisture protection; Canon SSC (Super Sspectrum Coating) - special super spectral coating of optics
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canon ef 24 105mm f 4 l is usm lens review
