Image credits: Images (and excerpts) shared with kind permission from Roger and the Lensental team.
Canonīs new RF 70-200mm lens is one of the most interesting lenses weīve come across in recent memory-so much so we deemed it a `modern marvelī in our sample gallery and crowned it the `Zoom Lens Winner of the Yearī award.
While weīve shared our thoughts on the image quality and overall performance of the lens, we havenīt taken too deep a look into the construction of the lens. Thankfully, Roger and his team over at Lensrentalss have done a complete teardown of the Canon RF 70-200mm F2.8 lens to show off just what Canon has put into this compact lens thatīs part of the `holy trinityī in the photo world.
A look at the PCB in the rear of the lens.
To start off the teardown, Roger recounts a little anecdote wherein a Canon engineer tossed a box on his workbench and pulled out a mock-up version of the RF 70-200mm F2.8 lens. Roger admits he isnīt easily impressed, but when he laid eyes on the mockup, he said his jaw dropped and the only words to leave his mouth were `thatīs going to sell you a lot of cameras.ī Now, a good while later, a full-functioning version of the lens was sitting on his workbench once again; and this time it wasnīt leaving without going through a little operation.
Before cracking open the lens, Roger first addresses the redesigned optics of the lens, pointing out the dual focus group design and the extending lens barrel, addressing the latter by saying:
`Some of you HATE extending barrel lenses. Thatīs cool; donīt get one. Some of you like to call them dust pumps. Thatīs cool, too, although itīs incorrect. (We take care of over 20,000 lenses. The most common `dustersī among current lenses all happen to be primes that donīt zoom at all.)ī
The breathable filter (which lets in air, but keeps out dirt and dust) around the lens barrel.
From there, itīs onto the teardown, which starts with ...
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