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M9reno

T Lens Manufacturer

By M9reno, in Leica CL / TL / TL2 / T Forum

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mjh   

mjh
Posted

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Regarding AF, I also read somewhere that it was Leica who came up with AF lenses way back when and sold the patent to some company in Japan. So does that not mean that Leica has some experience and knowledge with AF lenses?

A long, long time ago, in the 60s and 70s, Leica did indeed invent an autofocus technology (Correfot) that was a predecessor of today’s phase-detection technology. They even showcased a working prototype at photokina 1976 and 1978. Leica’s technology wasn’t ready for primetime though and as they failed to realise its potential, they eventually sold the IP to Minolta.

 

While the AF system of the S (Correfot 2) got named after its predecessor, it was a completely new development. Also the AF sensor itself was sourced from a third party (which I believe has never been officially disclosed although I think many people know who it is). Anyway, ever since the launch of the S2 Leica can claim to have some experience with AF lenses for phase-detection systems. The lenses designed for Panasonic and also the lenses for the X models support a contrast-based AF, so Leica can claim some experience in that area too (phase-detection and contrast-based AF systems have different demands).

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pico   

pico
Posted
A long, long time ago, in the 60s and 70s [... Snip helpful information]

 

Long, long time ago? As in Star Wars? OMG, that makes some kind of depressing sense!

 

I hope that your references to the Sixties as 'long ago' are simply benign historical references and not innuendo intended to alienate some of us Olde Pharts. I sense you are a long suffering, intelligent, informed and trusted man probably prematurely aged so I suspend judgement - for now.

 

 

 

 

Sent from my Etcha-sketch.

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dkCambridgeshire   

dkCambridgeshire
Posted (edited)

There are hundreds of Asian optical companies capable of making camera lenses - it's a cottage industry in some Asian countries.

 

B2Bmanufactures.com

 

Camera Lens Manufacturers, Camera Lens Suppliers

 

http://camerapedia.wikia.com/wiki/Category:Japanese_lens_makers

 

Take your pick

 

dunk

Edited by dkpeterborough

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mjh   

mjh
Posted
I hope that your references to the Sixties as 'long ago' are simply benign historical references and not innuendo intended to alienate some of us Olde Pharts.

In the Sixties I wasn’t much of a photographer (but I was trying), and thanks to my father I had a rough grasp of concepts such as shutter speed and aperture. But I don’t think that ‘Leica’ would have rung a bell back then.

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ceflynn   

ceflynn
Posted

Based on your avatar photo, I would have assumed that in the sixties, you were about minus ten to twenty years old.

 

I really enjoy your contributions to this forum.

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rob_w   

rob_w
Posted

Or it is an old photo ...

 

And I enjoy your contributions too, Michael.

 

Sometimes when the threads get too long I just scan for posters I respect. One of which is you ...

 

Many thanks!

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pico   

pico
Posted

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Cosina.

 

I use their 25mm F/.95 lens with joy on a 4/3 camera.

 

Good stuff, Cosina, but for FF work I prefer pre-asph Leica lenses.

 

 

 

 

Sent from my Etcha-sketch.

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luigi bertolotti   

luigi bertolotti
Posted
Or it is an old photo ...

 

And I enjoy your contributions too, Michael.

 

Sometimes when the threads get too long I just scan for posters I respect. One of which is you ...

 

Many thanks!

 

Or a photo not of him...

)

 

+ 1 for your words on Michael : one of the best here around.

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jonoslack   

jonoslack
Posted
Or a photo not of him... )

 

+ 1 for your words on Michael : one of the best here around.

 

Oh No . . don't tell me that Pico isn't a dog . . I don't think I could bear it!

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pico   

pico
Posted
Or a photo not of him... (I think Pico is NOT a dog.

 

 

Oh yes I am a dog: a Great Pyrenees, 185 pounds, 34" at the shoulder, and .:. I died of old-age in 2010 at 14 years-old. Thanks to the Internet I exist.

 

Please do not burst my bubble.

 

 

 

 

 

Sent from my Etcha-sketch.

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mjh   

mjh
Posted
Or it is an old photo ...

If you really must know, here’s a more recent one taken just a few weeks ago:

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pico   

pico
Posted (edited)

Me and my human keeper, the One and Only Molly McGuire in year 2000.

 

Taken with a $15 plastic camera.

 

I am the dog.

 

 

 

 

 

Sent from my Etcha-sketch.

Edited by pico
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LocalHero1953   

LocalHero1953
Posted (edited)

Whereas I really do look like my avatar - that's why I live only on forums.

 

Edit: just realised my avatar had disappeared - even he was embarrassed. Now restored

Edited by LocalHero1953

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pico   

pico
Posted
If you really must know, here’s a more recent one taken just a few weeks ago:

 

 

Very good. I am guessing you are about 55 years old today. If not, then ...

 

 

 

Sent from my Etcha-sketch.

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TW528   

TW528
Posted

Apparently the lenses use software-based corrections just like any other not optically-correctly only as suggested. LINK

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rob_w   

rob_w
Posted
If you really must know, here’s a more recent one taken just a few weeks ago:

 

Aha! Well, you can only continue to improve with age, Michael.

 

BTW looks like some party -- you are the only one who can still stand up straight

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jonoslack   

jonoslack
Posted
If you really must know, here’s a more recent one taken just a few weeks ago:

 

HI Michael

that's really worrying - all those other people have baby soft faces, and you STILL have wrinkles . . what must you be like without the soft focus?!

 

 

Looking good (at least 30)

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jonoslack   

jonoslack
Posted
Me and my human keeper, the One and Only Molly McGuire in year 2000.

 

Taken with a $15 plastic camera.

 

I am the dog.

 

 

Phew, that's a relief - I thought it would turn out you were just pretending to be a dog . . and my world would have fallen apart.

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