Help for Xmas Photos! 50mm 1.8G lens

Discussion in 'Photography Beginners' Forum' started by Sunset047, Dec 24, 2017.

  1. Sunset047

    Sunset047 TPF Noob!

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    Hi. New to forum because I need help! Recently bought a Nikon 1.8G 50mm AF-S Lens. I can’t get those tack sharp details I’m looking for despite various setting changes that I believe are correct. Any tips for using this lens and getting proper focus? I can’t focus manually often because I have trouble seeing through the tiny viewfinder.


     
  2. Sunset047

    Sunset047 TPF Noob!

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    I shoot with a Nikon D5000.
     
  3. JonA_CT

    JonA_CT TPF Supporters Supporting Member

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    Can you post an example picture with your settings? It'll be much easier to help!
     
  4. Sunset047

    Sunset047 TPF Noob!

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    Here the eyes aren’t tack sharp
     

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  5. ReflexPhoto

    ReflexPhoto TPF Noob!

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    Depends. Are your subjects moving or relatively stationary? If they aren’t moving, and you’re using a tripod, you can use the live-view and zoom that preview screen in to a point and check the focus (if I recall correctly, wide open aperture has a VERY small focus-depth window).

    Otherwise, if you’re lighting conditions allow, lower you’re aperture (I.E. NOT f1.8 but something higher) so that you open up your shot to have more ‘in focus’.

    Last idea I’ve got- if Nikon’s are anything like Yongnuo’s 50mm, double check your rear glass (lens side that attaches to the camera). The Yong’s have a very clear thin piece of protective film most people kinda forget to take off lol. Regardless, hope that helps ya.


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  6. JonA_CT

    JonA_CT TPF Supporters Supporting Member

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    Awww, your little guy looks to be about the same age as my son.

    I plugged your photo into an EXIF viewer, and here were the results...

    Camera: Nikon D5000
    Lens: 50 mm f/1.8
    Exposure: Auto exposure, Aperture-priority AE, 1/320 sec, f/2.2, ISO 2000
    Flash: none
    Focus: At 1.0m, with a depth of field of about 3.3cm, (from about 16mm before the focus point to about 17mm after)
    Date: December 23, 2017 12:37:04PM (timezone not specified)
    (19 hours, 26 minutes, 42 seconds ago, assuming image timezone of US Pacific)
    File: 1,000 × 664 JPEG
    97,877 bytes (96 kilobytes)
    Color Encoding: Embedded color profile: “sRGB


    It's a depth of field issue. You aperture is too wide, and as a result, you only have an inch "slice" of your subject that is in focus. If you miss the focus by a hair, you'll have sharpness issues.

    I'd stop down a bit...probably at least to F4.0 It'll deepen your DOF so more of your image is tack sharp.
     
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  7. snowbear

    snowbear Big Furball Supporting Member

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    ^This. Also, sometimes it's best to pick a single focus point so the camera isn't trying to focus on the closest part of the scene.
     
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  8. snowbear

    snowbear Big Furball Supporting Member

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    Not on Nikkors - just the back cap.
     
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  9. Sunset047

    Sunset047 TPF Noob!

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    Sometimes I almost feel like it’s backfocusing but don’t know how to adjust that.
     
  10. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    Yep. F/2.2 isn't much DOF, even with a 50mm. If the camera chooses a focus point just a few inches in front of, or behind, the eyes, the cute little guys' peepers will be soft.

    I'm assuming you're something like 4-5 feet from the subject. At f/2.2, you've only got 0.06 feet, or 3/4", in depth of field.
     
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  11. Sunset047

    Sunset047 TPF Noob!

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    If I’m farther away from the subject would 2.2 have a larger depth of field than closer?
     
  12. Dave442

    Dave442 No longer a newbie, moving up!

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    I agree with the others, shoot this at f/4 for the extra DOF at that close camera to subject distance. If you want to stay near wide open then move back and forth a bit and take a few extra shots. At f/2.2 your DOF will increase as you move farther away from the focus point. If you print the image in 5x7 then people are not going to notice the slightly OOF eyes.
     
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