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  1. #1
    Senior Member
    arshuter's Avatar

    Aperture question

    I picked up a D5100 with a Sigma 70-300 DG lens for in the kayak along. I have down loaded the owners manual on line but cannot figure out how to change the aperture without going into aperture mode, I'm in manual mode. What am I missing? I know I can't expect much for $50.00.


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    Last edited by arshuter; 02-22-2021 at 06:43 PM.



  2. #2
    Senior Member
    Needa's Avatar

    Re: Aperture question

    Aperture question
    Manual Mode
    Aperture question-screenshot-2021-02-22-12-56-00.png
    Last edited by Needa; 02-22-2021 at 07:01 PM.
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  3. #3
    Senior Member

    Re: Aperture question

    Its been a while since I have played with a D5XXX but I think there was a way to use a combo of the exposure compensation/command wheel but I think it changes depending on if you use aperture priority, shutter priority or full manual. I remember it being a PITA, which is one of the main reasons why I traded up to a D7XXX. I think your best bet is to use aperture priority if you want to be able to adjust that on the fly. Otherwise, if you have a fast shutter speed and you are in shutter priority, it will max out the aperture for you most likely leaving you to adjust the shutter speed without paying much attention to the aperture. Dont forget to go into your menus and set up min/max shutter speed, auto iso values, etc. That will help reduce the amount of time you need to go menu diving to adjust simple settings. Hope this helps.
    Thanks/Like arshuter Thanks/liked this post
     
    Camera- D800, D7500, D40x
    Zoom Lenses-
    DX- Tokina 11-16 f2.8, Sigma A 18-35 f1.8, Nikon 18-140 f3.5-5.6
    FX- Tamron 15-30 f2.8, Nikon 35-70 f2.8, Nikon 80-200 f2.8, Nikon 24-120 f4, Nikon AF-P 70-300 f4.5-5.6 Sigma C 150-600 f5-6.3
    Prime Lenses- Nikon 50 f1.8g, Tamron 85 f1.8, Tokina 100 f2.8, Rokinon HD 8 f3.5

  4. #4
    Senior Member
    Needa's Avatar

    Re: Aperture question

    ISO was a menu dive. The FN button can reassigned to change ISO as I recall.

  5. #5
    Senior Member
    BeegRhob's Avatar

    Re: Aperture question

    Arshuter,

    Needa has the info from the manual above. The reference manual is here: https://downloadcenter.nikonimglib.c.../23/D5100.html and it's on page 65.

    Rob
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    Primary D5300 Other Nikon Bodies D5100 D3000 D90 D100 D70 D60 Parts Bodies D80 D100 D3000
    AF-S 18-55; AF-S 55-200; AF NIKKOR 70-300; AF-P 70-300 Sigma 50-500mm F4.5-6.3 APO DG OS HSM
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  6. #6
    Senior Member
    arshuter's Avatar

    Re: Aperture question

    Thanks Needa and the rest of you for the responses. The manual I got has "Technical Notes" Compatible Lenses on page 65, weird. Now if I can figure out how to do Back Button Focus.

  7. #7
    Staff
    Super Mod
    hark's Avatar

    Re: Aperture question

    Aperture question
    Quote Originally Posted by arshuter View Post
    Now if I can figure out how to do Back Button Focus.
    This explains how to set it, but it doesn't appear to work quite the same as it does on my bodies. Near the end, he shows how the shutter button won't take an image unless the back button is held down. With my bodies, I can focus with the back button, remove my thumb from the back button, recompose, then press the shutter button without holding down the back button.

    There are a couple of other settings you might want to make. Usually AF-C is set for back button so you might have to switch that setting. You'd need to choose whether you want a single point focus, dynamic, group, 3D, or whatever focus points you want to use. And not sure if you can cap your ISO, but you might want to limit how high it goes (if that body allows a cap on ISO).

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    Cindy - D750, D500, D7200
    My 2021 Thread

    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci



  8. #8
    Senior Member
    blackstar's Avatar

    Re: Aperture question

    D3500 requires holding down the BB for recomposing.

  9. #9
    Staff
    Super Mod
    hark's Avatar

    Re: Aperture question

    Quote Originally Posted by blackstar View Post
    D3500 requires holding down the BB for recomposing.
    I've never used a D3500 or D5100, but back button focus is designed to be used in AF-C. What that means is the camera will continually focus on a moving subject as long as the back button is held down. If a subject is stationary, then it's suggested to focus with the back button, remove the thumb, recompose, and fire the shutter. So when used this way, it simulates AF-S (which is for stationary subjects), and the focus point doesn't change.

    But if you are shooting in AF-C with back button according to this video for the D5100, there isn't any way to focus and recompose without the focus point changing (because it's set for AF-C which is continuous AF). It might be one of the downsides to the D3x00 and D5x00 bodies though.
    Cindy - D750, D500, D7200
    My 2021 Thread

    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci



  10. #10
    Senior Member
    arshuter's Avatar

    Re: Aperture question

    Nice. Thank you Cindy.





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