Reading mode: Light Dark

Nikon D3 sliced in half

Go to last post
That's the new half-frame model being introduced at PMA.

--

'There is only one success - to be able to spend your life your own way.' -- Christopher Morley
 
See pics below from Ken Rockwell's site. Now you know why this stuff is so pricy.

I think the Nanocrystal coating is on the inside surface of the front element on the 14-24, although you can't really notice it in these images. I was sort of interested in the second and third elements from the front. The second one is obviously aspheric, almost parabolic in its inner surface. The third is a sandwich of two elements (I forget the technical term for this), one of which is quite thin.



 
--
Sweet! I wonder what they use to cut it?
 
Not sure... could be a diamond wheel / bandsaw or a water jet cutter.

I do recall they did the battery separately.
 
...that this is also the half-priced model for these turbulent economic times. ;-)

Currently being marketed as a conversation starter.

:-)
 
Pretty good, isn't it?

You can clearly see:
  • pentaprism
  • viewfinder glass elements
  • viewfinder glass cover
  • rear ISO (et al) LCD glass cover
  • rear main LCD
  • main printed circuit board
  • sensor
  • mirror (in the lowered position)
  • in-body AF-S motor
  • EN-EL4a battery
  • 14-24mm lens with its glass elements
  • lens' focusing motor
  • mounting screw
 
So is this the $4000 variant of the D3x everybody's been talking about?
 
I see a lot of air in this camera.. lots of space for improvement!

I mean the mirror box and pentaprism.. basically they are selling a lot of (hot) air! ;)
 
They use a vaccum to suck some of the air out of the D3 and produced the D700.

Then they sucked more air out and made the D90.

:)
HenkL said:
I see a lot of air in this camera.. lots of space for improvement!
I mean the mirror box and pentaprism.. basically they are selling a
lot of (hot) air! ;)
--
Click to expand...
--

'When a task cannot be partitioned because of sequential constraints, the application of more effort has no effect on the schedule. The bearing of a child takes nine months, no matter how many women are assigned.' - Frederick P. Brooks Jr.
-------------
http://flickr.com/photos/majorconfusion
 
He cut it using a " L - A - S - E - R "
 
When I took freshman physics, I was awake for enough of the optics lectures to learn the basics of how mirrors and prisms work (internal reflections, angle of incidence = angle of reflection, etc.). Looking at the D3 cutaway, I can follow the path of a central ray to the viewfinder, to the image sensor, and to the AF sensor.

But I don't understand how a central ray gets to the autoexposure sensor. This sensor is just below the flash shoe, pointing down There is a tiny right angle prism that directs light into the sensor. But if the big pentaprism is designed to reflect an image into the viewfinder, how can it also reflect an image into that little right angle prism, which sits above the optical axis of the viewfinder? There must be some sort of beam splitter in the system. But where?
 
Do NOT look behind the curtain! (Pun intended)
Julian Vrieslander said:
When I took freshman physics, I was awake for enough of the optics
lectures to learn the basics of how mirrors and prisms work (internal
reflections, angle of incidence = angle of reflection, etc.).
Looking at the D3 cutaway, I can follow the path of a central ray to
the viewfinder, to the image sensor, and to the AF sensor.

But I don't understand how a central ray gets to the autoexposure
sensor. This sensor is just below the flash shoe, pointing down
There is a tiny right angle prism that directs light into the sensor.
But if the big pentaprism is designed to reflect an image into the
viewfinder, how can it also reflect an image into that little right
angle prism, which sits above the optical axis of the viewfinder?
There must be some sort of beam splitter in the system. But where?
Click to expand...
--

'When a task cannot be partitioned because of sequential constraints, the application of more effort has no effect on the schedule. The bearing of a child takes nine months, no matter how many women are assigned.' - Frederick P. Brooks Jr.
-------------
http://flickr.com/photos/majorconfusion
 
I found another cutaway that shows the light path to the exposure sensor in an F5:



But I still don't understand how a central ray can be directed to the sensor, and also to the optical axis of the viewfinder. There must be some sort of splitter somewhere in that path.
 
You must log in or register to reply here.

Keyboard shortcuts

f
Forum
m
My threads
Mobile site
About
Editorial content
Cameras & Lenses
Community
All content, design, and layout are Copyright © 1998–2025 Digital Photography Review All Rights Reserved.
Reproduction in whole or part in any form or medium without specific written permission is prohibited.
When you use DPReview links to buy products, the site may earn a commission.
©GPS Media - Guides, Products, Services.
Back
Top