With this lens’s almost infinitely variable depth of field and its high image quality, along with an ability to suck in light from the dimmest of scenes, it has the capability of making friends fast and keeping them for a long time.
#Canon l objektiv how to
To find out how to use these graphs look at this article: How we test lenses The same can also be said of ghosting where light bounces around inside the lens.Ĭolour rendition, contrast and resolution are all in the top-drawer category for a lens of this nature with an average resolution figure at f/5.6 of 0.321 cyl/pxl ( MTF50) recorded on the Canon 20D that the test was carried out on.īelow is our lens test data.
#Canon l objektiv upgrade
The control of chromatic aberration, the bane of digital photography, is probably where the upgrade of this lens has gone the furthest and the figures returned by Imatest™ were in small fractions of a pixel and totally invisible to the naked eye.Īs could only be expected with such a huge aperture, flare could be invoked under forced conditions but in general use, no incidences of the phenomenon were recorded. The control of distortion, as could be expected on a prime lens, is good, measuring just -0.34% pincushion on the Imatest™ distortion module, an amount that is indistinguishable with the mark one eyeball. By any standards! At the widest apertures it is very good and at f/5.6 it is stunning! And don’t forget that by the time you reach that aperture the lens has already been stopped down by 5 stops! The optical performs of the lens is impressive.
#Canon l objektiv manual
During autofocus, the MF ring does not rotate although manual over-ride is easily possible with a light touch of the finger.Ĭanon’s UltraSonic Motor (USM) system of autofocusing has always been quick and quiet but this latest incarnation is virtually silent and almost instant! You may hear it in the reading room of the local library, but even there you would have to listen carefully.
Fear not, as the front element, without rotation, operates inside the hood, extending some 13mm on a single trombone to reach the point of closest focus at 0.95m. It can be a little disconcerting if, the first time you use the lens, it is set to manual focus and the hood rotates giving the impression that the front element may well be rotating also. The manual focus ring extends forward of the rubber ring to incorporate the mounting for the ES-79II supplied lens hood that clips into place and is released by a pair of pinch buttons on the hood. The distance window is flush, marked in metres and feet and sports a decent depth-of-field scale that is often omitted in modern lenses. Controls are simple, consisting of a single switch to control the AF/MF mechanism and a 15mm rubber ribbed manual focus ring forward of the distance window. To make handling easier, especially mounting and dismounting from the camera body, the lens has a cut-away area close to the mount giving the optic a certain unique look to it. In order to allow such a huge amount of light in, the lens has a large diameter, although it is not abnormally long for the focal length. The lens comes supplied in a draw-string leather pouch complete with a dedicated lens hood.
#Canon l objektiv full
We take a look at how it performs.ĭesigned primarily as a portraiture lens that gives an ideal perspective when used on a full frame sensor or 35mm film bodies, the lens can still be used on the cropped sensor bodies of the EOS line-up such as the 1D mk2 (1.3x crop) and the 30D (1.6x crop) giving narrower fields of view. Here is a lens from Canon that will make many photographers drool, and with the widest aperture in their current EF range, this new model becomes Canon’s definitive portraiture lens.
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