MFT day -rumours of it's demise has been greatly exaggerated

Japanese men are swimming in a sea of Micro Four Thirds lenses in today’s big MFT youtube event. I wish I could understand what they are saying in Japanese.

MFT Day

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...Olympus: We’ve tried designing an f/1.0 lens, but it’s hard to deal with the autofocus system.
There will be a product something worth the wait
...Panasonic: We are developing both MFT cameras and lenses
Lenses with 800+ range are being discussed internally

Olympus and Panasonic share thoughts about the future. Olympus says there will be “something” worth the wait
https://www.43rumors.com/olympus-and-pa ... -the-wait/

Long lenses make sense for the MFT mount.
The Canon EF 800mm f/5.6L IS USM Lens is 4.5kg, 9.9 lbs. vs 1.9kg, 4.2 lbs. for the new M.ZUIKO DIGITAL ED 150-400mm F4.5 and sells for $12,999 USD. The OM Digital 150-400mm is sharper with an equivalent focal length at $7,499.99 USD.

"OM Digital Solutions (formerly Olympus) has an unreleased model with the camera code “IM024”."

OM Digital registered a new camera in China!
https://www.43rumors.com/om-digital-reg ... -in-china/

... Olympus: We’ve tried designing an f/1.0 lens, but it’s hard to deal with the autofocus system.
There will be a product something worth the wait
...

Another stills lens that’s worth the wait? A constant aperture T1.2 15-60mm mFT might be worth the wait.

I'm trying to understand this screen shot from today's event.

MFT Day slide

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"Regarding the system, which has been 13 years since its birth, the idea and merits of the system, such as the important points as a mount designed exclusively for digital, are explained again."

https://mnzxai3d3rydwfqadpxq3l4jha-adwh ... 4.jpg.html

Maybe it describes this in this video by Gerald Undone, fast forward to 4:30 for an explanation on the advantages of using a Micro Four Thirds Lens.

"...the light is entering in a more perpendicular way, allowing for brighter corners and better off-center resolution than you find on a larger sensor format (this is a problem that ARRI has noticed in it's PL mount designed for film and it is aggravated by thick OLPF sensor coatings, their response is the new LPL mount (LPL = Large Positive Lock), and a whole new series of lenses), especially when shooting at wide angle focal length.

Telecentricity

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I'd love to get some affordable zoom lenses designed specifically for motion capture. To me that means a few things:

1. Constant aperture
2. De-clicked iris
3. Fixed length housing
4. Mechanical focus
5. OIS

I'm trying to understand this screen shot from today's event.

04.jpg

"Regarding the system, which has been 13 years since its birth, the idea and merits of the system, such as the important points as a mount designed exclusively for digital, are explained again."

Looks like they are explaining the inherent highly telecentric design of mFT. There was no legacy lens to have to worry about so the design could be optimised for a digital sensor.

Canon / Nikon had to design their first digital cameras to work with legacy FF lenses. They’re much harder to make telecentric designs from for even new lenses.

JB

I found a similar illustration in this article that describes the history of Four Thirds:

Olympus 14-54mm f/2.8-3.5

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"Olympus adopted telecentric optical design with their Four Thirds mount, and this lens, 14-54mm f/2.8-3.5, which was released in 2003.

...The full Micro Four Thirds system, with many subsequent lenses released, all inherit the original DNA from the Four Thirds system, using optimized telecntric lens designs that both companies had been improving over the decade.

...Now, Canon and Nikon mirrorless shooters should be able to experience the same performance out of the latest Z-Mount and RF-Mount lenses."

Telecentric Lens Design: Did Nikon and Canon Follow Micro Four Thirds’ Lead?
https://petapixel.com/2019/08/12/telece ... irds-lead/

It's not MFT so much as mirrorless. There's no longer any need to have long FFD to clear flipping/spinning mirrors and prisms. Arri's LPL is 8mm shorter than PL despite being a 1.5x larger format. From the Arri site;

Reduced flange focal distance gives additional degrees of freedom for lens design that can be used for reducing aberrations like distortion, spherical aberration, field curvature or chromatic aberrations while enabling high speed lenses (low T-stop-number). The reduction of weight is also easier to achieve since space for a mechanical shutter does not need to be provided any more. All these features are provided with the LPL mount.

Good Luck

Leica M cameras are 'mirrorless' but they don't have telecentric lenses (quite the opposite). Removing the mirrorbox and having a shorter flange to focal plane distance has nothing to do with 'telecentricity' but having a wider ratio of lens opening to sensor size does. M43 also allows lens designers more flexibility as the lens elements are a smaller diameter but the glass has the same refractive index.

Leica M cameras are 'mirrorless' but they don't have telecentric lenses (quite the opposite). Removing the mirrorbox and having a shorter flange to focal plane distance has nothing to do with 'telecentricity' but having a wider ratio of lens opening to sensor size does. M43 also allows lens designers more flexibility as the lens elements are a smaller diameter but the glass has the same refractive index.

It’s not just the shorter flange. It’s the image circle size relative to the physical mount size and image circle (for things like telecentricity)

I think the point is that when designing MFT, they didn’t have to take into account any legacy film era lens systems.

Leica M is worse in a way, shorter (ish but not really compared to other mirroless) FFD AND a large (135 format) image circle.

JB

OM Digital has announced the new Four Thirds website
You can now see the new Four Thirds website at

http://www.four-thirds.org/en/

https://www.43rumors.com/om-digital-has ... s-website/

You can search products from 56 companies at the site.