Any rumors on the horizon about an m43 lens longer than 400mm?

Started 6 days ago | Discussions thread
SHood Veteran Member • Posts: 5,450
Re: Do??

Danielvr wrote:

It looks like Fuji is working on DO primes lenses so m43 will need to do the same.

You're using the phrase like everybody knows it.

What does DO mean and why do we need it?

"DO" refers to Diffractive Optics lenses have have been used recently by Canon and Nikon on their telephoto lenses to reduce their weight and size by moving the front element much closer to the lens mount. Nikon has been the most successful as they have only charged a small premium over non-DO lens equivalents. Nikon called is Phase Fresnel (PF) and more details can be found at this link.

https://www.fujirumors.com/fujifilm-xf-300mm-f4-and-500mm-f5-6-patents-found/

For comparison here is the Nikon and Olympus 300mm F4 lenses

https://camerasize.com/compact/#840.506,648.710,ha,t

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