First ever low budget 100 to 400 millimeter lens, the rf 100 400 millimeter, f, 5.6 to f 8 is usm. Well, i say its low budget 650 in the us or 700 pounds in the uk is hardly chump change, but hey it gets you to 400 millimeter in a relatively affordable manner, and i love shooting at 400. Millimeter ive often said that thats about the least telephoto reach you should be after, if youre seriously, into bird and wildlife photography. So i appreciate canon going straight into releasing a lens of this zoom range, instead of churning out yet another 70 to 300 millimeter one. Instead, this lenses key disadvantage is made clear in its name that maximum aperture of f 5.6, which darkens to f8 as you zoom in, is much darker than usual for a telephoto zoom. So dont expect to get the most out of focus backgrounds in the world here and also it wont, make a good lens for sports photography unless youre able to shoot in bright, sunlight or willing to use exceptionally high iso levels. Still. The good news is that the high iso image quality of canons cameras is pretty fantastic these days and the lens has a good image stabilization system to help out as well, offering about five stops of assistance, so the lens can just about get away with that dark. Aperture, but you should still be aware of its resulting limitations. However, a real advantage of that dark capture is how relatively small and lightweight this lens can then be its only a little larger than a traditional 70 to 300 millimeter lens and at 630 grams or one and a half pounds its a very easy lens to carry Around with you and take almost anywhere, it has an elongated appearance, thats almost comical looking a bit like a zoomable kit lens that canons designers simply decided to stretch out a bit.

If i were being coarse id make a comment about its rather phallic appearance, although its certainly not a very sexy, looking lens by any stretch of the imagination, its made of plastic with a metal mount, although theres no weather sealing gaskets there up from the rear, come The controls for image, stabilization and auto focus followed by a broad and rubberized zoom ring it turns evenly and reasonably smoothly, but with a little stickiness and weight to it. That means it. Doesnt suffer from any zoom creeping. A lock switch is included, though, to keep it at 100 millimeter in case the zoom action begins to loosen up over time then comes a fairly wide plastic focus ring the lenses focus motor responds very well to it being turned and pleasingly the lens doesnt really suffer From focused breathing talking about the lenses autofocus motor well, despite being a lower budget lens canon have blessed this thing with their top of the line, nano usm, auto focus system. This means that even taking into consideration the lens is rather dark maximum aperture. It focuses silently accurately and almost instantaneously. You will have no trouble tracking and shooting birds and other moving subjects with this lens theres. One of canons neat control rings at the top of the lens, which has gentle clicks to it. You can customize it on your camera to perform various different actions or even send your lens away to canon to have that control ring de clicked for a price.

The lens does not come with a hood, although one is available separately for a rather hefty 45 dollars. Its front filter size is 67 millimeters wide. Overall, it might not be the prettiest lens to look at, but actually everything about its image. Quality kinda kicks ass for a lower budget option, its electronics and its handling are both fantastic, but what about image? Quality ill? Be testing this lens on a canon eos r5, with its full frame. 45 megapixel sensor with in camera, corrections turned on at 100, millimeter and f, 5.6 sharpness and contrast are very good in the middle of the image, but not quite perfect. The corners look noticeably softer, but still fairly, nice stop down to f8 and the corners see a minuscule improvement in sharpness and brightness and picture quality in the middle now looks razor sharp. The lens stays. This sharp at 100 millimeter down to f11. All right lets zoom. In halfway to 250 millimeter, the maximum aperture here has already decreased to f 7.1 image. Quality looks excellent in the middle here. The corners are just a little sharper than at wider angles, looking good at f 7.1 and at f 11 again, they become just marginally sharper. Finally, lets zoom all the way into 400 millimeter thats that dark maximum aperture of f8. The good news is that the lens remains very sharp in the middle of your images, although perhaps again not quite razor sharp the corners well, its the same story, they do look a little softer, but are still pretty nice and sharp stopping down to f11 doesnt yield.

Any improvement here so our conclusion here is plain and simple, although its not as bitingly sharp as one of canons l lenses, for instance, the rf 100 to 500 millimeter, is noticeably better and more expensive. Well, this lower budget 100 to 400 millimeter option is actually very good indeed giving an even performance throughout the zoom range, with images that are always enjoying plenty of detail and good contrast. Nice, okay lets turn in camera, corrections off and look at distortion and vignetting at 100 millimeter. We see some noticeable pin, cushion distortion and darker corners at f 5.6 stop down to f8 or f11, though, and those corners quickly, brighten up zoom into 400 millimeter, and that distortion is still there, although not quite as pronounced again at the maximum aperture. Some vignetting is visible: stop down to f11 to see even brightness across the image frame. Alright lets take a look at close up image quality now zoom into 400 millimeter, and the lens can focus as closely as one meter treating you to some spectacular, almost macro photography images image quality at that close distance, though, is just okay at both f8 or f11. The likelihood here is that the close shooting distance means diffraction has become an issue softening your image, even when shooting at the brightest aperture well lets see how this lens performs when faced against bright lights, impressively theres, virtually no flaring to be seen here at all, even When you zoom all the way in thats, very reassuring, you dont really need to bother with that 45 lens.

Hood, then lets take a look at this lenss bokeh. Its dark maximum matcher means that other telephoto lens options will give you much better background separation, but still zoom in enough, and this lens can offer you some pretty soft backgrounds. Although the brightest points and lines there will carry just a little heaviness to them and finally related to bokeh comes longitudinal chromatic aberration at the lenss brightest apertures, a little purple and yellow highlighting can be seen around the plane of focus, stop down a little, and it Goes away quite quickly overall. Well, the biggest question mark that any serious photographer will have when it comes to this lens will be attached to the problem of its dark maximum aperture. And yes, even with the benefit of image stabilization, you will often be shooting at quite high iso levels as a result of it. But if you can live with that, then a host of benefits will be your reward. Good build quality and a lightweight body, sharp image, quality with lightning, fast autofocus and low focus, breathing good contrast and a spectacularly close minimum focus distance. If you also take into account the lenses reasonable price and flexible zoom range, then you cant really go wrong. Its a surprisingly accomplished lens really and if you can look beyond its dark aperture, it does come highly recommended thanks for watching. I hope you enjoyed this review and found it helpful if youd like to support the channel, then take a look at my patreon page down in the description below it makes a big difference and supporters get all kinds of exclusive content that i really enjoy putting together.