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Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D60/D50/D40 (Public) topic #24709
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Subject: "RE: Difference Between D50 and D40 , D40x" Previous topic | Next topic
briantilley Moderator Deep knowledge of bodies and lens; high level photography skills Nikonian since 26th Jan 2003Sun 22-Jul-12 06:00 PM
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#11. "RE: Difference Between D50 and D40 , D40x"
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Sun 22-Jul-12 10:57 PM by briantilley

Paignton, UK
          

This is a 4-year-old thread, but it's probably worth pointing out a couple of things - for posterity, if nothing else

It's true that "screwdriver" AF lenses have a pattern of electrical contacts that differs from the AF-S lenses that will not autofocus on the D40, D40X, D60, D3000, D5000, etc. The pattern on AF lenses is one contact, then a gap, then four more contacts. AF-S lenses have no gap and have between 7 and 10 contacts in one group.

Whilst the absence of contacts does mean it's an MF lens, the presence of electrical contacts does not guarantee it's an AF lens. There have been a couple of so-called "Ai-P" manual focus Nikkors (such as the 45mm f/2.8), which have the same "one-gap-four" contact pattern as screwdriver AF lenses.

Lastly, all the top "pro" Nikkors have the same contact patterns as the cheaper, plastic-mount, lenses that you mention. The number of contacts is not an indicator of quality.

Brian
Welsh Nikonian

  

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A topic tagged as having a questionDifference Between D50 and D40 , D40x [View all] , louischeng328 , Thu 10-Jan-08 04:56 AM
 
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Reply message RE: Difference Between D50 and D40 , D40x
MotoMannequin Moderator Awarded for his extraordinary skills in landscape and wildlife photography
10th Jan 2008
1
Reply message RE: Difference Between D50 and D40 , D40x
bclaff Silver Member Awarded for multiple contributions for the Resources
10th Jan 2008
2
Reply message RE: Difference Between D50 and D40 , D40x
louischeng328
10th Jan 2008
4
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mfa
11th Jan 2008
5
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g1975a Silver Member
12th Jan 2008
6
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louischeng328
12th Jan 2008
7
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g1975a Silver Member
12th Jan 2008
8
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mfa
13th Jan 2008
9
Reply message RE: Difference Between D50 and D40 , D40x
jnosacka
10th Jan 2008
3
Reply message RE: Difference Between D50 and D40 , D40x
petie3 Silver Member
22nd Jul 2012
10
     Reply message RE: Difference Between D50 and D40 , D40x
briantilley Moderator Deep knowledge of bodies and lens; high level photography skills
22nd Jul 2012
11

Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D60/D50/D40 (Public) topic #24709 Previous topic | Next topic