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Introduction
The Canon RF 100-400mm F5.6-8 IS USM is a compact, light-weight and reasonably priced super-telephoto zoom lens for Canon EOS R full-frame mirrorless cameras that will not break the financial institution.It options 12 components in 9 teams, together with one aspherical component to assist management distortion and one Extremely Low Dispersion component to scale back chromatic aberrations, and it has a Tremendous Spectra Coating to assist scale back flare and ghosting.This lens has a 9 blade diaphragm which creates a lovely blur to the out-of-focus areas of the picture.It is geared up with an optical Picture Stabilizer that gives 5.5 stops of built-in stabilisation, or 6-stops when used with the EOS R5 and EOS R6 cameras.An inner focusing mechanism means the lens barrel would not transfer, and it affords a formidable minimal focusing distance of 88cm / 34.6″ and a most magnification ratio of 0.41x, while utilizing value efficient 67m filters.There is a configurable management ring on the lens barrel which lets you shortly change the publicity compensation, shutter velocity, aperture and ISO settings.This lens can also be suitable with the RF 1.4x and 2x extenders with no limitations on the zoom vary, providing focal ranges of 140mm – 560mm and 200mm – 800mm respectively.The Canon RF 100-400mm F5.6-8 IS USM lens is accessible now priced at £699 / $649 within the UK and the US, respectively.
Ease of Use
Weighing in at 635g / 22.4 ounces and measuring 16.5cm in size (when set to the 100mm focal size), the RF 100-400mm F5.6-8 IS USM is a surprisingly compact and comparatively light-weight lens given the big focal vary of 100-400mm that is on supply.
It would not really feel in any respect unbalanced when utilizing it with a mid-sized digital camera physique just like the Canon EOS R6 physique that we examined it with, as proven within the product images, even with out a battery grip fitted.
The lens extends additional by an extra 8.5cm to achieve a complete size of 25cm when absolutely zoomed out to 400mm.
The RF 100-400mm is barely shorter than the same RF 100-500mm F4.5-7.1L IS USM by about 4cms, however crucially its a lot, a lot lighter than its longer, quicker cousin, which weighs in at a whopping 1530g.
Construct high quality is excellent for what’s in spite of everything a non L-series lens. Regardless of its principally plastic building, the RF 100-400mm F5.6-8 IS USM feels strong in your hand, and it commendably has a metallic mount.
Observe that this lens doesn’t have a weather-resistant design to assist shield it towards mud and moisture.
There are two switches on the left hand facet of the RF 100-400mm F5.6-8 IS USM lens. The highest one is a swap for selecting between auto-focusing and guide focusing. The underside one is a swap for turning picture stabilisation on or off.
The built-in 5.5 stops of picture stabilisation are essential when hand-holding such an extended lens, and the system fortunately works very nicely, making certain you could shoot at slower shutter speeds than 1/four-hundredth and nonetheless get sharp outcomes (clearly relying in your method).
That is particularly essential on the older EOS R and RP cameras, which lack the extra in-body stabilisation supplied by the newer EOS R5 and R6, which subsequently additional improve the RF 100-400mm F5.6-8 IS USM’s personal stabilizer, though solely by an additional half cease to six stops in complete.
The Lock perform swap is a helpful characteristic that helps shield the lens. Set the focal size to 100mm and transfer it to the Lock place to stop the zoom mechanism from creeping when the digital camera is pointed down or in storage.
On the finish of the lens is the slim management ring. As on most different Canon RF lenses, this can be utilized to regulate sure key digital camera settings (TV, AV, ISO and publicity settings).
The fly-by-wire guide focusing ring is pretty slender however it’s ridged that can assist you to get a firmer grip on it.
There are additionally no arduous stops at both finish of the ring that can assist you know when the minimal or most focusing distance has been achieved.
Observe that this lens usefully affords full-time guide focusing even when AF is chosen.
Polariser customers needs to be happy that the smart 67mm filter thread would not rotate on focus.
Auto-focusing with the Canon RF 100-400mm F5.6-8 IS USM and the EOS R6 digital camera proved to be fast, quiet and correct for almost all of the time.
The Twin Nano USM auto-focusing system makes use of each a hoop sort USM and an STM mechanism to ship quick, practically silent autofocus efficiency with full-time guide focus override within the one-shot AF mode.
The lens can also be very quiet, making it best for discreet conditions, akin to on safari or for birding, in addition to to be used whereas filming movies.
We did not expertise an excessive amount of “looking” in any respect, both in good or dangerous gentle, with the lens precisely focusing just about all the time, because of the excellent low-light capabilities of the EOS R cameras.
There’s a petal formed lens hood (EW-74B) and a mushy case (LP1224) out there for this lens, however disappointingly each are non-obligatory extras that are not included within the field.
Focal Vary
The Canon RF 100-400mm F5.6-8 IS USM’s focal vary gives an angle of view of 24° at 100mm and 6° 10′ at 400mm.
100mm
200mm
300mm
400mm
Chromatic Aberrations
Chromatic aberrations, usually seen as blue or purple fringes alongside contrasty edges, weren’t particularly obvious in our check photographs, solely showing in very excessive distinction areas.
Vignetting
With the Canon RF 100-400mm F5.6-8 IS USM lens set to its most aperture, there may be some gentle fall-off within the corners, which you will have to appropriate in post-processing. That is way more obvious within the Uncooked information than the JPEGs.
100mm / JPEG
100mm / RAW
400mm / JPEG
400mm / RAW
Distortion
There’s some gentle pin-cushion distortion at both finish of the focal vary in each the JPEG and Uncooked information, however it’s not too pronounced.
100mm
200mm
Macro
The Canon RF 100-400mm F5.6-8 IS USM affords a minimal focusing distance of 88cm / 34.6″, with a most magnification of 0.41x. This allows you to seize some good macro photographs when capturing on the 400mm focal size.
Bokeh
Bokeh is a phrase used for the out-of-focus areas of {a photograph}, and is normally described in qualitative phrases, akin to easy / creamy / harsh and so forth.
Within the RF 100-400mm F5.6-8 IS USM lens, Canon have employed an iris diaphragm with 9 rounded blades, which mixed with the slightly gradual most apertures ends in pretty good bokeh in our view.
We do realise, nonetheless, that bokeh analysis is subjective, so we have included numerous examples beneath to your perusal.
Sharpness
To be able to present you the way sharp the Canon RF 100-400mm F5.6-8 IS USM lens is, we’re offering 100% crops on the next pages.
Subsequent Web page
Sharpness: 1 »
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