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Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
24.0mm
Aperture:
f/9.0
Exposure
1/250s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
105.0mm
Aperture:
f/4.0
Exposure
1/1250s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
105.0mm
Aperture:
f/4.0
Exposure
1/1600s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
35.0mm
Aperture:
f/7.1
Exposure
1/400s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
62.0mm
Aperture:
f/10.0
Exposure
1/320s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
95.0mm
Aperture:
f/8.0
Exposure
1/1000s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
85.0mm
Aperture:
f/8.0
Exposure
1/1000s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
105.0mm
Aperture:
f/4.0
Exposure
1/1250s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
31.0mm
Aperture:
f/9.0
Exposure
1/400s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
50.0mm
Aperture:
f/9.0
Exposure
1/640s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
24.0mm
Aperture:
f/11.0
Exposure
1/200s
Make
Canon
Model
Canon EOS 5DS R
ISO Speed
200
Focal Length
35.0mm
Aperture:
f/9.0
Exposure
1/320s
Verdict
Let's be honest - the Canon EF 24-105mm f/4 USM L IS (mk I) was not the greatest lens Canon ever produced. Unfortunately neither is the Canon EF 24-105mm f/4 USM L IS II. While there are differences on detail level, the performance is roughly similar which is a little depressing given all the years that passed by since the mk I was designed. 50 megapixels are a torture ground for all lenses but it's too much for the Canon EF 24-105mm f/4 USM L IS II really. The center quality is sufficient but the corner quality just isn't there at the extreme ends. The amount of CAs is acceptable. The lens performs, of course, much better on 21 megapixel cameras with very decent results from f/5.6 at least. However, you have to live with the outlook that the glory ends once you decide to upgrade you camera. The amount of vignetting is average for this kind of lens thus there's quite some light-falloff at 24mm f/4. However, stopping down to f/5.6 resolves most of the issue already. Barrel distortions are also obvious at 24mm albeit not extreme. The lens is also no distortion wonder at 105mm. The quality of the bokeh is comparatively decent for a standard zoom lens at least.
The build quality of the Canon EF 24-105mm f/4 USM L IS II is much more convincing. The high quality materials, tight tolerances and weather sealing are certainly good enough for professional use. The USM AF is extremely fast and silent. However, if you decide to invest into this lens make sure that the AF is properly calibrated. We tested two samples and both suffered from substantial back-focusing (to a degree that we haven't seen before). The image stabilizer with its potential gain of up to 4 f-stops is a major improvement over the old lens.
So what's the final conclusion ? Honestly, we would recommend to skip this lens. We just didn't find any substantial improvement over the already not-so-great predecessor. Instead we would suggest to check out the Canon EF 24-70mm f/4 USM L IS or the Sigma 24-105mm f/4 HSM ART.
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