canon 800mm f/3.8 lens? wow!

[aznkid.com]

http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&category=4691&item=38509094 68&rd=1

[J.A.F. Doorhof]

WOW

[Jesper]

What a strange monster of a lens! It's a mirror lens and it looks old, it doesn't have an EF mount. And it weighs 15 kg!

I wonder how setting the aperture works. "The aperture is varied via a system of built-in, dial-in, neutral-density filters. Apertures, achieved with neutral density filters : f/3.8; f/5.6; f/8; f/11; f/16; f/22"

How can you set the aperture with a neutral density filter? I suspect that it has a fixed aperture, and you can change the amount of light that enters the lens by using the neutral density filters. That means you can't really change the aperture and the depth-of-field.

Also: "The lens doesn't have internal focusing. Focusing is done via an external bellows unit (focusing mount). The focusing mount is not included."

So you need to find a special focusing mount for it, otherwise you can't even focus it!

Who wants to pay $6,300 for that?!

[Andy_T]

Some more info from Google...

http://www.mir.com.my/rb/photography/companies/canon/fdresources/fdlenses/reflex8002000/2000mm.htm

http://www.mir.com.my/rb/photography/companies/canon/fdresources/fdlenses/reflex8002000/2000mm.htm

Might be a bit heavy to hand-hold over longer times... :lol:

Best regards,
Andy

[IncompletePete]

That's a beast!

[J.A.F. Doorhof]

Anyone noticed the Nikon body :D

[ron chappel]

.....that means you can't really change the aperture and the depth-of-field..


Yes that's right

[dhbailey]

In the explanation it says that focusing is done with a focusing bellows that the camera attaches to, BUT it also says the lens doesn't come with that bellows. What good would it be to anybody without a way to attach a camera?

Are such focusing bellows available, and are they reasonably cheap?

[C.S.I.]

:shock: OMG!!!! DID U CLICK THE LINK TO THE 5200 F14?!?!?!?!? :shock:


Show me a young Conservative and I'll show you someone with no heart. Show me an old Liberal and I'll show you someone with no brains. - Winston Churchill


_______________________
300D
Sigma 70-200 2.8 EX
Sigma 105 2.8 macro EX

[CyberDyneSystems]

http://www.mir.com.my/rb/photography/companies/canon/fdresources/fdlenses/reflex8002000/cat.htm

These are freaking telescopes! That 5200 is more than double the focal length of a good telescope! :shock:

[DocFrankenstein]

http://www.mir.com.my/rb/photography/companies/canon/fdresources/fdlenses/reflex8002000/cat.htm

These are freaking telescopes! That 5200 is more than double the focal length of a good telescope! :shock:
Just in case the moon looks really nice that night, you can just take a snapshot or two :D :lol: :lol:

[Scottes]

That 5200 is more than double the focal length of a good telescope!

And at 220lb it's a a lot heavier, too. And it certainly doesn't need IS.

[steven]

So do you think it has good bokie? :twisted:

and can it be used as a protrait lens? :evil: :twisted:

[CyberDyneSystems]

http://www.mir.com.my/rb/photography/companies/canon/fdresources/fdlenses/reflex8002000/cat.htm

These are freaking telescopes! That 5200 is more than double the focal length of a good telescope! :shock:
Just in case the moon looks really nice that night, you can just take a snapshot or two :D :lol: :lol:


I honestly do not think you could fit the entirety of the moon in the frame with a 5200mm lens! In fact I'm sure of it. :shock:

[Jesper]

That 5200 is more than double the focal length of a good telescope!

And at 220lb it's a a lot heavier, too. And it certainly doesn't need IS.

Wow, 100 kg, you need at least two stong men to move that lens !!! :shock:

[Persian-Rice]

That 5200 is more than double the focal length of a good telescope!

And at 220lb it's a a lot heavier, too. And it certainly doesn't need IS.

Wow, 100 kg, you need at least two stong men to move that lens !!! :shock:

Or me alone :D
*gag* that thing looks like an electric motor. Ugly hunk o' junk.

[roanjohn]

HOLY CR*P!!!

And I thought my 70-200 f2.8 was heavy!!!

Ro1

[Mthorpe_Davies]

Awesome lens for peeping toms, you could be miles away and still get an excellent view without being caught.

[timmyquest]

Can you handhold them?

[rraman]

Can you handhold them?

Are you Schwarzenegger by any chance? :lol:

[timmyquest]

Can you handhold them?

Are you Schwarzenegger by any chance? :lol:

Depends on who you ask

[PM01]

I honestly do not think you could fit the entirety of the moon in the frame with a 5200mm lens! In fact I'm sure of it. :shock:

Around 1600 mm is the max with a full frame 35mm.

Though we have been known to try 8000mm and above, just for grins and giggles. :)

[CyberDyneSystems]

You know I was just thinking of this thread for some reason.. :lol: