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Canon RF 100-400mm F5.6-8 IS USM Assessment



Introduction

The Canon RF 100-400mm F5.6-8 IS USM is a compact, light-weight and inexpensive 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 ingredient to assist management distortion and one Extremely Low Dispersion ingredient to cut 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 inside 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 price efficient 67m filters.

There is a configurable management ring on the lens barrel which lets you shortly change the publicity compensation, shutter pace, aperture and ISO settings.

This lens can 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 on the market now priced at £699 / $649 within the UK and the US, respectively.

Ease of Use

Canon RF 100-400mm F5.6-8 IS USM

Canon RF 100-400mm F5.6-8 IS USM

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 totally zoomed out to 400mm.

Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM

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 any case a non L-series lens. Regardless of its largely 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.

Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM

There are two switches on the left hand aspect of the RF 100-400mm F5.6-8 IS USM lens. The highest one is a change for selecting between auto-focusing and guide focusing. The underside one is a change 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 properly, making certain which you can shoot at slower shutter speeds than 1/four-hundredth and nonetheless get sharp outcomes (clearly relying in your approach).

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 due to this fact 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 whole.

Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM

The Lock operate change 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 manage 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 will help you to get a firmer grip on it.

Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM

There are additionally no laborious stops at both finish of the ring that will help 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 ought to be happy that the wise 67mm filter thread would not rotate on focus.

Canon RF 100-400mm F5.6-8 IS USM

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 be very quiet, making it preferrred for discreet conditions, resembling on safari or for birding, in addition to to be used whereas filming movies.

Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM

We did not expertise an excessive amount of “looking” in any respect, both in good or dangerous mild, with the lens precisely focusing nearly all the time, because of the very good low-light capabilities of the EOS R cameras.

There’s a petal formed lens hood (EW-74B) and a delicate case (LP1224) accessible for this lens, however disappointingly each are non-obligatory extras that are not included within the field.

Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM

Focal Vary

The Canon RF 100-400mm F5.6-8 IS USM’s focal vary supplies an angle of view of 24° at 100mm and 6° 10′ at 400mm.

Canon RF 100-400mm F5.6-8 IS USM

100mm

Canon RF 100-400mm F5.6-8 IS USM

200mm

Canon RF 100-400mm F5.6-8 IS USM

300mm

Canon RF 100-400mm F5.6-8 IS USM

400mm

Chromatic Aberrations

Chromatic aberrations, usually seen as blue or purple fringes alongside contrasty edges, weren’t particularly obvious in our check pictures, solely showing in very excessive distinction areas.

Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM

Vignetting

With the Canon RF 100-400mm F5.6-8 IS USM lens set to its most aperture, there’s some mild fall-off within the corners, which you will must right in post-processing. That is way more obvious within the Uncooked information than the JPEGs.

Canon RF 100-400mm F5.6-8 IS USM

100mm / JPEG

Canon RF 100-400mm F5.6-8 IS USM

100mm / RAW

Canon RF 100-400mm F5.6-8 IS USM

400mm / JPEG

Canon RF 100-400mm F5.6-8 IS USM

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.

Canon RF 100-400mm F5.6-8 IS USM

100mm

Canon RF 100-400mm F5.6-8 IS USM

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 pictures when taking pictures on the 400mm focal size.

Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM

Bokeh

Bokeh is a phrase used for the out-of-focus areas of {a photograph}, and is often described in qualitative phrases, resembling 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 quite gradual most apertures leads to pretty good bokeh in our view.

We do realise, nonetheless, that bokeh analysis is subjective, so we have included a number of examples beneath in your perusal.

Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM
Canon RF 100-400mm F5.6-8 IS USM

Canon RF 100-400mm F5.6-8 IS USM

Canon RF 100-400mm F5.6-8 IS USM

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.

We will be happy to hear your thoughts

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