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Yongnuo announces 25mm f/1.7 lens for MFT and it appears to be an original design

Feb 5, 2021 by John Aldred 4 Comments

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Yongnuo has announced a new 25mm f/1.7M autofocus lens for Micro Four Thirds. Shockingly, it appears to actually be an original design and not a copy of somebody else’s (like just about all of their DSLR lenses). Other than the it-had-so-much-potential Yongnuo YN450M, Yongnuo hasn’t released much since joining the Micro Four Thirds System Standard Group in February last year.

The new lens is nothing special, of course, being the MFT equivalent of a cheap nifty fifty. And Panasonic’s had an inexpensive 25mm f/1.7 for years. But Yongnuo is perhaps starting to take the system more seriously now. Interestingly, the photos on the Yongnuo product page show it attached to a Panasonic camera, and not their own YN450M.

The lens appears to be of an original design, comprised of 7 elements in 6 groups. For comparison, Panasonic’s 25mm f/1.7 is 8 elements in 7 groups and the Olympus 25mm f/1.8 is 9 elements in 7 groups. It has a minimum focus distance of 20cm (a touch closer than Panasonic), with a more standard 52mm filter thread (the Panasonic is a slightly odd 46mm).

Focal length25mm
Max aperturef/1.7
Min aperturef/22
FormatMicro Four Thirds
MountMicro Four Thirds
Optics7 elements in 6 groups
Aperture blades7
Min focus distance20cm
Filter diameter52mm
Dimensions60.8 x 66.6mm
Weight150g

The lens uses an STM stepper motor for focusing, and there’s an AF/MF switch on the side of the lens allowing you to quickly and easily switch to manual focus when required. Interestingly, there doesn’t seem to be any mention of a USB port for updating firmware, as there has been with many of Yongnuo’s clone lenses. Perhaps they’re relying on updates through the camera for new firmware (and there is a list of what I’m guessing are compatible bodies for this purpose on the product page).

There’s no word on a price for the Yongnuo 25mm f/1.7M lens yet, but it’s going to have to be quite the bargain to draw customers away from the tried and tested currently-$150 Panasonic 25mm f/1.7 lens. Or, it’s going to have to be one killer lens. Until it’s released and there are reviews up, though, there’s no way to know if that’s the case. As with the price, there’s no news on an actual release date yet, either.

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Related posts:

Yongnuo’s new Android-powered YN455 MFT camera sports a 5″ flip-up touchscreen LCD Panasonic announces GH5 firmware update, new Leica MFT zoom lens and ZS70 / TZ90 4K compact travel camera Voigtländer announces super-fast 29mm f/0.8 aspherical lens for MFT The new Laowa 50mm f/2.8 lens is the world’s first 2X macro lens designed for MFT

Filed Under: Gear Tagged With: 25mm f/1.7, Gear Announcement, Lens Announcement, micro four thirds, Yongnuo

About John Aldred

John Aldred is a photographer with over 20 years of experience in the portrait and commercial worlds. He is based in Scotland and has been an early adopter - and occasional beta tester - of almost every digital imaging technology in that time. As well as his creative visual work, John uses 3D printing, electronics and programming to create his own photography and filmmaking tools and consults for a number of brands across the industry.

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John Aldred is a photographer with over 20 years of experience in the portrait and commercial worlds. He is based in Scotland and has been an early adopter - and occasional beta tester - of almost every digital imaging technology in that time. As well as his creative visual work, John uses 3D printing, electronics and programming to create his own photography and filmmaking tools and consults for a number of brands across the industry.

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