The Canon EF 28-300mm f / 3.5-5.6L IS USM is the company’s only super zoom lens for full frame rather than APS-C format DSLRs and is extremely heavy. Indeed, it weighs about three times as much as a Super Zoom lens and weighs 1,670g. Therefore, it looks and feels like a thick telephoto lens, and comes with Canon’s trademark off-white painting work and a tripod mounting ring. Launched in 2004, this lens matches the first edition of Canon’s EF 100-400mm IS USM lens with a trombone-style push-pull zoom mechanism instead of the usual twist-action zoom ring, providing adjustable friction. I am preparing. Damper.
mount: Canon EF
Full frame: Yes
auto focus: Yes
Image stabilization: Yes
Lens structure: 23 sheets in 16 groups
Angle of view: 75-8.25 degrees
Aperture blade: 8
Minimum aperture: f / 22-38
Minimum focal length: 0.7m
Maximum magnification: 0.3 times
Filter size: 77mm
With a design spirit that focuses on quality rather than compactness, this lens features the usual L-series trapping. It features rugged, weatherproof, professional-grade build quality and a matching high-end optical layout. It has two aspherical elements and three UD elements. There is a switch for AF / MF focusing, an autofocus range limiter that can lock out the short end between 0.7m and 2.5m, and a dual pan mode for static shots and pan shots. Ring-type ultrasonic autofocus comes with regular full-time manual overrides and a focus distance scale at the bottom of the display window.
The performance is impressive, as you would expect from a Canon L-series lens. Autofocus is fast and whispering quiet, but the older generation of image stabilizers have only a 3-stop effect. Overall the image quality is pretty good, but it’s best to squeeze a bit for decent corner sharpness to reduce vignetting at the short edges of the zoom range.
Use the Imatest Master test suite to run various lab tests under controlled conditions. The photos on the test chart are taken over the aperture and zoom range (if available) and analyzed for sharpness, distortion and chromatic aberration.
Using the Imatest SFR (Spatial Frequency Response) chart and analysis software, lenses at four different focal lengths using a zoom lens, at the distance of the center, corner, and midpoint of the image frame, over the entire aperture setting range. Plot the resolution. This test also measures distortion and chromatic aberration.
Center sharpness is quite suitable for super zoom lenses, but edge sharpness is relatively disappointing. Overall, the sharpness is completely superior to the much newer RF24-240mm Super Zoom for Canon’s EOS R series mirrorless cameras.
When uncorrected, short to medium zoom settings will have noticeable color bleeding towards the edges and corners of the frame, but not so much at the longer end of the zoom range.
The barrel distortion is quite large at 24mm and switches to inconspicuous pincushion distortion at medium to long zoom settings.
Overall, the Canon EF 28-300mm is an expensive lens beast and is useful when you need to avoid replacing the optics of the camera body. Therefore, it is useful when you need to respond quickly when taking a photo of an event or when shooting a particular type of wildlife or sport. However, unlike most Super Zooms, it’s not a travel-friendly option and is relatively expensive to buy.
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