The Canon EF 17-40mm f/4L USM Lens is a staple for most photographers. and I could 100% recommend buying this if you don’t already own a lens wider than 24mm. Lifetime Review: Canon EF
Note: Canon has introduced a high speed 24mm lens to complement its existing EF 24mm f/2.8 AFD for the EOS System. The new lens is none other than the EF 24mm f/1.4 L USM in middle of 1997. A year later, Canon introduced another high speed wide-angle lens, the EF 35mm f1.4 L USM.
Gary Wolstenholme reviews the premium fast wide-angle Canon EF 24mm f/1.4L II USM lens. 1 Jun 2011 10:21AM by Gary Wolstenholme | Canon EF 24mm f1.4L II USM in Interchangeable Lenses BUY NOW CANON
Versus the RF 100-400mm IS USM. Canon RF 100-400mm f/5.6-8 IS USM. Like most companies, Canon announced this huge, expensive RF 100-500mm L IS first, so that all the rich people who wanted to buy one would, and so that all the people who wanted a long zoom for their EOS-R series camera bought it if they could afford it.
John Riley reviews the new Canon RF 24-105mm f/4L IS USM, the standard kit lens for the EOS R. and especially as the wide end has been extended down to 24mm. It also focuses reasonably close
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canon ef 24mm f 1.4 l usm review