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  1. #11
    CGW
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    Quote Originally Posted by bluedog View Post
    Thanks guys. It sounds like I can't go too far wrong with a AF-S 105 mm.
    With earlier lenses in manual mode is there any indication in the viewfinder when the lens is in focus?
    Yup. Dot appears in the viewfinder with over/under indicators, e.g., >0<

  2. #12
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    Quote Originally Posted by bluedog View Post
    Thanks guys. It sounds like I can't go too far wrong with a AF-S 105 mm.
    With earlier lenses in manual mode is there any indication in the viewfinder when the lens is in focus?
    The 105 most mentioned is the AIS 105. It's ugly and works great.

    I have the 105/dc; expensive but as good as it gets for nice blur in the background and clean sharp in-focus area.

    I only have an f4s, and it has arrows to tell you which way to rotate the lens, and a green light to show acceptable focus.

  3. #13
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    Quote Originally Posted by CGW View Post
    Yup. Dot appears in the viewfinder with over/under indicators, e.g., >0<
    Fine, if you're happy with over half of your photos being in less than perfect focus...
    M6, SL, SL2, R5, P6x7, SL3003, SL35-E, F, F2, FM, FE-2, Varex IIa

  4. #14
    CGW
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    Quote Originally Posted by Rol_Lei Nut View Post
    Fine, if you're happy with over half of your photos being in less than perfect focus...
    That's just so untrue. Point us toward the voluminous complaints about this feature apart from your own. Show us the evidence if being regarded as something other than a crank matters to you, OK? Just adding the YMMV disclaimer would help.

  5. #15
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    A recent German magazine published tests of the AF accuracy of the current crop of DSLRs (OT - but they are likely to be at least as accurate as an F4, hopfully some progress has been made in AF since c. 1988), using many different lenses,focusing distances, subject types, etc. Different results according to brand: Canon was worst, with only something like 30% perfectly in focus, 20% acceptably in focus and 50% out of focus (going from memory here). Nikon did better with about 50% in focus.

    This fits my own (fairly extensive) experience of AF usually not being as accurate as manual focus (at least with a decent viewfinder).

    I'll get hold of of a copy the magazine sometime soon (I quickly read the test in a library): it really was interesting.

    But if you find 100% perfect focus using the focus indicator light, then YMMV (and your quality standards too)...
    Last edited by Rol_Lei Nut; 12-05-2011 at 01:44 PM. Click to view previous post history. Reason: Added
    M6, SL, SL2, R5, P6x7, SL3003, SL35-E, F, F2, FM, FE-2, Varex IIa

  6. #16

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    OK Rol_Lei Nut, now the OP at least knows how you arrived at your one line comment but it would have been helpful if you'd said from the start that you believe that all AF systems are faulty in more than 50% of cases and this is based on your experience and an article on DSLRs.

    If APUG is going to be useful in threads where the OP is seeking information then we all need to know why someone has said what he/she has said.

    pentaxuser

  7. #17
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    Dear Pentaxuser,

    Thanks, I'll keep that in mind...

    Cheers!
    M6, SL, SL2, R5, P6x7, SL3003, SL35-E, F, F2, FM, FE-2, Varex IIa

  8. #18
    CGW
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    Quote Originally Posted by pentaxuser View Post
    OK Rol_Lei Nut, now the OP at least knows how you arrived at your one line comment but it would have been helpful if you'd said from the start that you believe that all AF systems are faulty in more than 50% of cases and this is based on your experience and an article on DSLRs.

    If APUG is going to be useful in threads where the OP is seeking information then we all need to know why someone has said what he/she has said.

    pentaxuser
    Agree. Without documentation it's just hot air.

  9. #19
    CGW
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    Quote Originally Posted by Rol_Lei Nut View Post
    A recent German magazine published tests of the AF accuracy of the current crop of DSLRs (OT - but they are likely to be at least as accurate as an F4, hopfully some progress has been made in AF since c. 1988), using many different lenses,focusing distances, subject types, etc. Different results according to brand: Canon was worst, with only something like 30% perfectly in focus, 20% acceptably in focus and 50% out of focus (going from memory here). Nikon did better with about 50% in focus.

    This fits my own (fairly extensive) experience of AF usually not being as accurate as manual focus (at least with a decent viewfinder).

    I'll get hold of of a copy the magazine sometime soon (I quickly read the test in a library): it really was interesting.

    But if you find 100% perfect focus using the focus indicator light, then YMMV (and your quality standards too)...
    Better eye sight, perhaps? No one nails focus 100% of the time.

    Sony's new NEX 5n and NEX 7 have a "focus peaking" function made for manual lenses that leaves little doubt about focus accuracy--a feature that should become common since Sony makes a large percentage of today's sensors.

  10. #20
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    Quote Originally Posted by CGW View Post
    Better eye sight, perhaps? No one nails focus 100% of the time.

    Sony's new NEX 5n and NEX 7 have a "focus peaking" function made for manual lenses that leaves little doubt about focus accuracy--a feature that should become common since Sony makes a large percentage of today's sensors.
    The old Nikon N90s had the same thing. Nothing new there.
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