How do you know if it will meter??

Discussion in 'Digital Photography' started by 12991, Aug 18, 2007.

  1. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #2
    When you say meter do you really mean auto-focus? I'm a Canon user myself but my understanding is that the D40 will only auto-focus when the lens has a focus motor in it as Nikon decided to remove the motor and screw drive from the body.
     
  2. 12991 thread starter macrumors member

    Joined:
    Feb 3, 2007
    #3
    No, i meant meter...

    Canon user, gosh

    jk... but i meant meter
     
  3. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #4
    OK then. A very tiny amount of Google research gives a chart on this page which indicates which lenses will meter via the acronym in the lens name.

    So, for example, the first lens you link to claims to be AF-D. A quick look at the chart shows it will meter.
     
  4. 12991 thread starter macrumors member

    Joined:
    Feb 3, 2007
    #5
    thanks... I googled it as well, but i couldnt find it. I guess every varying search brings different results
     
  5. OreoCookie macrumors 68030

    Joined:
    Apr 14, 2001
    Location:
    Sendai, Japan
    #6
    Except for the second lens, they will all meter. All autofocus lenses allow for metering while only very, very few manual focus lenses will do that on your body (e. g. the PC Nikkor).

    Interestingly enough, except for the Sigma 50 mm, none of the other lenses are macro lenses! On the other hand, since you have a D40, you will need an internal focus motor of AF-S to be able to autofocus with that body.
     
  6. ChrisA macrumors G4

    Joined:
    Jan 5, 2006
    Location:
    Redondo Beach, California
    #7
    Very simple answer: If the lens has electronic contacts on the mount it will meter with the D40. This means all autofocus types of lenses will meter.

    The D40's problem is not with the meter. It is with auto-focus. The body lacks a motor and therefore can only autofocus with lenses that have their own built-in motor.

    I use a very old manual focus 60mm macro lens. It does not meter with my D50. But then in a way it does because I can take a test shot and look at the histogram display. It's hard to think of a better light meter than a histogram. A lot of times I'll use a studio strobe system and there is no way other then full manual even with an AF-S lens. I simply set aperture for the DOF I want, the shutter depending on how much ambient light I want mixed in and then adjust the strobe power based on the histogram display.
     
  7. Digital Skunk macrumors 604

    Digital Skunk

    Joined:
    Dec 23, 2006
    Location:
    In my imagination
    #8
    All Nikon glass that is AF-S will meter. If it isn't AF-S it doesn't have an integrated motor and will not AF on the D40.

    Metering will occur with any lens sans manual focusing ones that don't have the electronic contacts that connect them to the camera.
     
  8. ChrisA macrumors G4

    Joined:
    Jan 5, 2006
    Location:
    Redondo Beach, California
    #9
    None of those you listed are very good. They are all zoom lenses with a "macro" setting. This just means they will focus "close". What you want is a fixed foal length "prime" macro lens. Any Nikon lke this will be dead sharp with better resolution then the digital sensor can record. Nikon made these for years with manual focus then made many with autofocus. The MF lenses will sell used now for $100 or less. Any except the "pre AI" will work. Not many of those old early 1960's lenses still around and if you do find a pre AI lense it can be converted to AI, even DIY if you are very bave.

    If cost is a real problem buy a et of diopters. These look like filters and screw on the lens. Many of these are poor quality but both Nikon and Canon make some good quality diaopters. I would recommend buying only those brands
     

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