Results 1 to 8 of 8

Thread: camera cross section

  1. #1
    Does he need a reason? Funkstar's Avatar
    Join Date
    Aug 2005
    Location
    Aberdeen
    Posts
    19,874
    Thanks
    630
    Thanked
    965 times in 816 posts
    • Funkstar's system
      • Motherboard:
      • Gigabyte EG45M-DS2H
      • CPU:
      • Intel Core2Quad Q9550 (2.83GHz)
      • Memory:
      • 8GB OCZ PC2-6400C5 800MHz Quad Channel
      • Storage:
      • 650GB Western Digital Caviar Blue
      • Graphics card(s):
      • 512MB ATI Radeon HD4550
      • PSU:
      • Antec 350W 80+ Efficient PSU
      • Case:
      • Antec NSK1480 Slim Mini Desktop Case
      • Operating System:
      • Vista Ultimate 64bit
      • Monitor(s):
      • Dell 2407 + 2408 monitors
      • Internet:
      • Zen 8mb

    camera cross section

    This might come in handy if you are trying to explain how a dSLR works to someone.


  2. #2
    Senior Member Virtual Monkey's Avatar
    Join Date
    Jan 2005
    Location
    Manchester
    Posts
    596
    Thanks
    51
    Thanked
    54 times in 32 posts
    • Virtual Monkey's system
      • Motherboard:
      • Abit IP-35E
      • CPU:
      • Intel Core 2 Duo E4600 @ stock 2.4ghz
      • Memory:
      • 3gb Corsair XMS2 DDR 6400
      • Storage:
      • 250GB Samsung HD250HJ Spinpoint
      • Graphics card(s):
      • 256MB PowerColor HD3850
      • PSU:
      • 550w Corsair VX Series PSU
      • Case:
      • Antec NSK4000 Mini Tower Case
      • Operating System:
      • Vista Home Premium
      • Monitor(s):
      • LG Flatron L226WTQ 22in

    Re: camera cross section

    Wow, fascinating.

    I'm guessing the 3 bronze circular things at the bottom are AA batteries?

    Didn't realise lenses had that much glass in them either!

  3. #3
    Does he need a reason? Funkstar's Avatar
    Join Date
    Aug 2005
    Location
    Aberdeen
    Posts
    19,874
    Thanks
    630
    Thanked
    965 times in 816 posts
    • Funkstar's system
      • Motherboard:
      • Gigabyte EG45M-DS2H
      • CPU:
      • Intel Core2Quad Q9550 (2.83GHz)
      • Memory:
      • 8GB OCZ PC2-6400C5 800MHz Quad Channel
      • Storage:
      • 650GB Western Digital Caviar Blue
      • Graphics card(s):
      • 512MB ATI Radeon HD4550
      • PSU:
      • Antec 350W 80+ Efficient PSU
      • Case:
      • Antec NSK1480 Slim Mini Desktop Case
      • Operating System:
      • Vista Ultimate 64bit
      • Monitor(s):
      • Dell 2407 + 2408 monitors
      • Internet:
      • Zen 8mb

    Re: camera cross section

    Probably not AAs exactly, but they will be the cells whthin the battery pack (see the dark grey plastic surrounding the three cells).

    And going by the large lump under the lens mount, it has to be a D3x. Have a look at the battery section on this page: http://www.dpreview.com/reviews/nikond3x/page4.asp

    Also note the amount of glass within the camera body itself. Lens, prysm then three more lenses before you get to the eye piece.

  4. #4
    Senior Member
    Join Date
    Jan 2004
    Location
    Notts UK
    Posts
    766
    Thanks
    11
    Thanked
    55 times in 52 posts

    Re: camera cross section

    D3 or D3x (not sure it's possible to tell those 2 apart) with a 14-24 2.8 - has to be by the way the front element is curved like that and the lack of filter threads.

    The glass viewfinder prism is amazing - never knew they were THAT big.

    It also shows why the new mirror-less DSLRs are so exciting - imagine how small that could be if you removed the space taken by the mirror box and the viewfinder. It'd be 1/3 as big.

  5. #5
    Does he need a reason? Funkstar's Avatar
    Join Date
    Aug 2005
    Location
    Aberdeen
    Posts
    19,874
    Thanks
    630
    Thanked
    965 times in 816 posts
    • Funkstar's system
      • Motherboard:
      • Gigabyte EG45M-DS2H
      • CPU:
      • Intel Core2Quad Q9550 (2.83GHz)
      • Memory:
      • 8GB OCZ PC2-6400C5 800MHz Quad Channel
      • Storage:
      • 650GB Western Digital Caviar Blue
      • Graphics card(s):
      • 512MB ATI Radeon HD4550
      • PSU:
      • Antec 350W 80+ Efficient PSU
      • Case:
      • Antec NSK1480 Slim Mini Desktop Case
      • Operating System:
      • Vista Ultimate 64bit
      • Monitor(s):
      • Dell 2407 + 2408 monitors
      • Internet:
      • Zen 8mb

    Re: camera cross section

    I assumed it was the D3x, simply as it is newer and Nikon would want to pimp it

    Not just size, but weight as well. There is also greater scope the change the design to improve/change the ergonomics. I'm not saying there is definitely a better way to build a camera like this, but you never know what will be on the market this time next year or the year after that.

    Interesting times for the camera market. We could finally be moving out of the stagnant and, quite frankly, boring models that have fludded stores over the past couple of years.





  6. #6
    Senior Member
    Join Date
    Jan 2004
    Location
    Notts UK
    Posts
    766
    Thanks
    11
    Thanked
    55 times in 52 posts

    Re: camera cross section

    Yup - that Olympus mock-up is what I was referring to over in the Micro 4/3ds thread. Can't afford it, doesn't even exist yet, but I want one! Shame they didn't announce it at PMA.

  7. #7
    Senior Member this_is_gav's Avatar
    Join Date
    Dec 2005
    Posts
    4,854
    Thanks
    175
    Thanked
    255 times in 217 posts

    Re: camera cross section

    Quote Originally Posted by Funkstar View Post
    I assumed it was the D3x, simply as it is newer and Nikon would want to pimp it
    It is the D3x. This was at a show when it was launched.

  8. #8
    Pseudo-Mad Scientist Whiternoise's Avatar
    Join Date
    Apr 2006
    Location
    Surrey
    Posts
    4,274
    Thanks
    166
    Thanked
    386 times in 233 posts
    • Whiternoise's system
      • Motherboard:
      • DFI LANPARTY JR P45-T2RS
      • CPU:
      • Q6600
      • Memory:
      • 8GB DDR2
      • Storage:
      • 5.6TB Total
      • Graphics card(s):
      • HD4780
      • PSU:
      • 425W Modu82+ Enermax
      • Case:
      • Silverstone TJ08b
      • Operating System:
      • Win7 64
      • Monitor(s):
      • Dell 23" IPS
      • Internet:
      • 1Gbps Fibre Line

    Re: camera cross section

    Quote Originally Posted by Virtual Monkey View Post
    Didn't realise lenses had that much glass in them either!
    Yup, you need - for a simple case - a minimum of four lenses for a zoom lens (technically camera lenses are groups of lenses).

    The more light you get in the better things are for you, so you need massive lenses at the front to bring in light (and you often need two or three to bend the light coming in from the first one). These are the front elements. As mentioned above, this is a wide angle lens and is thus going to need that whopping curved thing at the front to get all that 14mm goodness in

    Next is what i've labelled the zoom group, though not sure what it is technically. Basically a group of three lenses, a concave lens sandwiched between two convex ones. I'm not sure how it works in that picture, but for a zoom lens, one of those elements will be on rails and is what you're moving when you turn the barrel. The concave lens right next to the convex lens is an achromatic doublet (i think), it's basically to minimse the effect of chromatic aberration caused by different wavelengths refracting by different amounts.

    Finally, at the back, you have a series of focussing elements which get the light in line and focussed for the sensor.

    The aperture will be somewhere between the zoom elements and the focussing elements.

    Here's my badly annotated (i think it's mostly right) picture:



    As an aside, the f/# of a camera is the focal length of the camera divided by the collecting diameter (f/#=N=f/D) (this is the APERTURE opening diameter NOT the front element diameter) - note that the aperture diamater is often a smaller because the lenses behind it magnify it a bit. Having large elements to get lots of light in at the front helps a lot, as does coating!

    You see, this is how lenses get very expensive very quickly - and how it's kind of impractical to make a 400mm f/1.4 lens (and how massive it would have to be).
    Last edited by Whiternoise; 05-03-2009 at 05:25 PM.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. When is a speed camera not a speed camera?
    By DR in forum Automotive
    Replies: 40
    Last Post: 17-10-2006, 05:28 PM
  2. Camera RMA from Pixmania
    By badermans in forum SHOPPING AND CLASSIFIEDS
    Replies: 6
    Last Post: 21-02-2006, 04:55 PM
  3. New digital camera?
    By streetster in forum PC Hardware and Components
    Replies: 15
    Last Post: 26-12-2003, 01:29 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •