Canon's release of 600/800mm f11 lenses PROVES you don't need Cannons!

Started 2 months ago | Discussions thread
Wu Jiaqiu
Wu Jiaqiu Forum Pro • Posts: 26,790
Re: Moreover, they finally demonstrate where equivalence stops

MHshooter wrote:

Hubertus Bigend wrote:

While equivalence continues to prove valid both in theory and practice most of the time, those two lenses seem the first real proof that even now that full-frame finally starts to make slow mft-equivalent lenses which weren't available on full-frame so far (and which Chris Niccholls and Jordan Drake were asking for in a recent video), at least in the longer telephoto range they still won't become as compact, nor will they offer similar close-focus capabilities without additional effort, either.

This is all the more obvious as those f/11 lenses even make use of Fresnel elements, which could, but haven't been used for any Micro Four Thirds lens yet, with the potential of making them even smaller than they are.

There are optical downsides to fresnel lenses. I'd prefer if they (Olympus) stuck with making absolutely top-flight optics. It's not like Olympians need 600mm+ lenses, so the length of traditional optics doesn't matter much. In truth, i thought the the Canon lenses would be stripped-down, maybe even manual focus, in which case they would be fun to add to an Olympus kit. Like having a powerful mirror-lens, without the drawbacks of a mirror-lens.

i've used both of the Nikon pf lenses and have never experienced optical downsides from them, i'm not saying they don't exist  but just maybe they are a little overstated.

As for those Canon lenses i have no idea how you'd use them on a tripod for those less than bright days

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