Review. 1. Introducción. El EF 17-40mm f/4L es un objetivo de gama alta, perteneciente a la serie L, que se vende a un precio razonable para todo lo que ofrece, de ahí su popularidad. Se trata de un zoom que funciona como súper gran angular en su focal de 17 mm y cubre una distancia media a 40 mm. Su interesante versatilidad le hace adecuado
A select group of Canon EF lenses support a rear gel filter. EF 17-40mm f/4L USM & EF 14mm f/2.8L USM showing gel filter holder. Only a few lenses have gel filter slots in the rear, they are typically the extreme wide-angle lenses. Recently launched lenses like the EF 16-35mm f/2.8L II USM use a large 82mm filter thread instead of a gel filter

EF 16-35mm f/4L IS USM: EF 17-35mm f/2.8L USM: EF 17-40mm f/4L USM: EF 20-35mm f/3.5-4.5 USM: EF 24-70mm f/2.8L USM: EF 24-70mm f/2.8L II USM: EF 24-70mm f/4L IS USM:

EF17-40mm f/4L USM. This super wide-angle zoom lens allows you to take wide photographs even with digital SLR cameras which have a screen size smaller than 35mm, covering the range from a super wide-angle 17mm to a standard 40mm. Three aspherical lens elements which come in two types deliver both a wide zoom range and high image quality, while

Canon EF 17-40mm f/4L USM macro using Canon EOS 400D / XTi. To measure and compare macro performance we photographed a chart using each lens at a focal length and distance which delivered the maximum possible reproduction. The dark lines are 10mm apart and the result is not cropped. Smaller areas are preferred in this test.
Has full-time manual focus. Canon EF 17-40mm f/4L USM. Canon EF-S 18-55mm F/3.5-5.6 IS STM. With full-time manual focus, you can move the focus ring whilst it is in AF (autofocus) mode. This means that you can make manual adjustments once the AF has finished, without changing to manual mode.
I am currently using a Canon 7D. My other lenses are: Canon 70-200mm f/4 L, Canon 50mm f/1.8 and Rokinon 8mm f/3.5 fisheye. The Canon 17-40mm f/4 L just completes my kit. I haven't had the opportunity to fully tet the lens yet. What I can say is that in good to decent light conditioning this lens is performing at its best!
At f/4 the 17-40mm is sharper, has less flare and higher contrast. The new 17-40mm f/4L is a welcome surprise though. At nearly half the price of the faster and slightly wider 16-35mm f/2.8L it provides excellent image quality, surpassing that of the more expensive lens in several areas. READ FULL REVIEW. Ken Rockwell. I love my Canon 17-40mm f
Canon EF 17-40mm f/4L USM ⭐ review. Discover the key facts and see how Canon EF 17-40mm f/4L USM performs in the camera lens ranking.
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    • canon ef 17 40mm f 4l review