Canon RF lens specifications

Canon Rumors Guy

Canon EOS 40D
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Jul 20, 2010
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www.canonrumors.com
The specifications for the four RF lenses launching next week with the Canon EOS R have leaked.
Canon RF 28-70mm f/2L USM

Lens composition: 13 groups 19 elements
Minimum focus distance: 39cm (15.35 inches)
Filter diameter: 95mm
Size: 103.8mm (4.08 inches) × 139.8mm (5.5 inches)
Weight: 1430g (3.15lbs)

Canon RF 50mm f/1.2L USM

Lens construction: 9 groups of 15 elements
Minimum focus distance: 40cm (15.74 inches)
Filter diameter: 77mm
Size: 89.8mm (3.53 inches) x 108.0mm (4.25 inches)
Weight: 950g (2.09lbs)

Canon RF 35mm f/1.8 IS STM Macro

Lens construction: 9 groups 9 elements
Minimum focus distance: 17cm (6.69 inches)
Filter diameter: 52mm
Size: 74.4mm (2.92 inches) × 62.8mm (2.47 inches)
Weight: 305g (0.67lbs)

Canon RF 24-105mm f/4L IS USM

Lens construction: 14 groups 18 elements
Minimum focus distance: 45cm (17.71 inches)
Filter diameter: 77mm
Size: 83.5mm (3.28 inches) × 107.3mm (4.22 inches)
Weight: 700g (1.54lbs)...

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jd7

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Feb 3, 2013
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Right, so the RF 35/1.8 IS a touch lighter than the EF 35/2 IS, and RF 24-105/4L IS is a bit lighter than the EF 24-105/4L IS II (although a fraction heavier than the EF 24-105/4L IS) ... and the RF 28-70/2L and RF 50 1.2L are fairly heavy lenses. Unsurprising for their specs given they are all FF lenses (and what we've seen other brands), but again it has me questioning whether FF mirrorless really has much of a weight or size advantage over DSLR ... and assuming it doesn't, what the big deal is about FF mirrorless.

I understand mirrorless may offer some other benefits over DSLR, but DSLR offers some benefits of [edit: over] mirrorless too (depending on what features you value, eg I am yet to see an EVF I like as much as an OVF although I realise others prefer EVF).

I will be interested to hear more about the EOS R and the RF lenses as information becomes available, but at this point personally I'm not feeling a likely buyer for the EOS R (at least any time soon).
 
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dtaylor

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Jul 26, 2011
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but again it has me questioning whether FF mirrorless really has much of a weight or size advantage over DSLR ... and assuming it doesn't, what the big deal is about FF mirrorless.

That's where I'm at. That's also why I was hoping Canon would go EF mount. But...I don't know if the R mount is what enabled the 28-70 f/2L.

I understand mirrorless may offer some other benefits over DSLR, but DSLR offers some benefits of FF mirrorless too (depending on what features you value, eg I am yet to see an EVF I like as much as an OVF although I realise others prefer EVF).

EVF gives you exposure preview and always available (not camera held out 'live view') AI AF options like eye AF. DSLR gives you a superior VF in many ways and faster non-AI AF acquisition / tracking. The best MILC AF systems are now pretty quick and good, but still not as fast and sure as off-mirror PDAF. (The Nikon Z tracking test at DPR was poor by top of the line DSLR standards.)

The other differences are not inherent to mirror/no mirror. They just are because that's what engineers chose. Size/weight savings appear to be a myth for FF mirrorless (not going to nitpick a few ounces or mm's here) but real for APS-C mirrorless.

Whether or not I buy an R will depend entirely on video specs and price. It would not become my primary camera, and I kinda doubt I would buy dedicated R lenses right now (cool though the 28-70 f/2L may be).
 
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