Re: Patent - of interest?

[Godfrey DiGiorgi]

> Gee that stuff's hard to read... but it seems to deal mainly
> with body-lens communication and control. So do the IS/VR of
> canon/nikon have the sensors in the lenses or the body? 

Canon's IS and Nikon's VF are both lens-based. 

Godfrey



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Re: Patent - of interest?

[Frantisek]

Tuesday, January 25, 2005, 12:59:41 AM, Godfrey wrote:
>> Gee that stuff's hard to read... but it seems to deal mainly
>> with body-lens communication and control. So do the IS/VR of
>> canon/nikon have the sensors in the lenses or the body? 

If I remember correctly,
 it was discussed many years ago here that Pentax also held many
 patents on various aspects of image stabilisation, mostly in
 lens. I don't have the posts archived, and maybe the links are no
 longer working, but it could be searched for perhaps. What I
 remember is that the field was pretty muddled, with probably many
 licensing and et cetera, and that the essential patents for
 implementation of IS might be owned by several distinct
 companies. It was discussed with great regret here that Pentax
 didn't start producing its own IS lenses... Quite a long time
 ago.

Good light!
   fra

Re: Patent - of interest?

[frank theriault]

On Tue, 25 Jan 2005 10:56:28 +1100, David Nelson
<[EMAIL PROTECTED]> wrote:
> Just found this patent issued (to Pentax Corp) about a month ago (filed
> early 2002) - called "Interchangeable lens with angular velocity sensors".
> 
> http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=GB2403021&F=0
> 
> Gee that stuff's hard to read... but it seems to deal mainly with
> body-lens communication and control. So do the IS/VR of canon/nikon have
> the sensors in the lenses or the body? Anything interesting in that
> patent? (other than the fact that pentax is working on lens-based image
> stabilisation ("imageshake compensation")?)
> 
> BTW - I've been away for the best part of a couple of months - have I
> missed any news/rumours?
> 

Hi, David,

I don't pay much attention to these things (patents and, generally,
new technology ), but I seem to recall that Pentax has all sort of
patents issued that they don't do anything with.  So, I wonder how
excited we should get about this.

As for your last question, the answer is:  No.  You've missed nothing.
 Cotty and I are having a bit of a tiff, but I don't know why.  It's
his fault, he started it, and I don't know what it's about because he
won't tell me.

In other words, same old, same old...

Nice to see ya back.  Any magnificent bug shots for us?

cheers,
frank


-- 
"Sharpness is a bourgeois concept."  -Henri Cartier-Bresson