+ Reply to Thread
Page 4 of 4 FirstFirst ... 234
Results 31 to 39 of 39
  1. #31
    Senior Member

    Re: How to lock focus on D3500?

    How to lock focus on D3500?
    Ok, after several experiments and tests, I have come to the conclusion on focus for (at lease) my case. It turns out Nick is right about whether D3500 provides full BBF function. It doesn't -- whenever there is nothing or nearly nothing (e.g., empty wall, empty sky even with high cloud or dark sky even with bright stars) in view, shutter won't fire! So BBF with D3500 won't work for my planed star-shooting. However, BBF will be used for most of the other shootings for me. I have decided to use MF (thanks to Walt's suggestion) with hyperfocal distance for night-sky shooting after two-night trials. The first night, I was wrong to use a lighting subject for HF and got all stars out of focus... Next night, I used a non-lighting subject to make HF and the outcome is acceptable (for the test) if not great due to immense light pollution in the area.

    How to lock focus on D3500?-2020-02-19-21.23.32-s.jpeg

    How to lock focus on D3500?-2020-02-19-21.22.22-s.jpeg

    How to lock focus on D3500?-2020-02-19-21.20.28-s.jpeg


    › See More: How to lock focus on D3500?



  2. #32
    Senior Member

    Re: How to lock focus on D3500?

    From my star-shooting experiment, I can say higher iso will get more stars in view, but also brighter sky due to light pollution. I guess it can edited toward darker sky with same number and brightness of star remained? But I doubt increasing exposure (by post processing) of the low iso image (darker sky) will not bring up star quantity? Thanks for comments.

  3. #33
    Senior Member

    Re: How to lock focus on D3500?

    Quote Originally Posted by blackstar View Post
    Ok, after several experiments and tests, I have come to the conclusion on focus for (at lease) my case. It turns out Nick is right about whether D3500 provides full BBF function. It doesn't -- whenever there is nothing or nearly nothing (e.g., empty wall, empty sky even with high cloud or dark sky even with bright stars) in view, shutter won't fire! So BBF with D3500 won't work for my planed star-shooting.
    Bummer. I had a feeling it wasn't going to work out. There was a chance they could have added it though. My d7200 and others have menu items a1 and a2 to define if af-c and af-s wait for focus (focus priority) or if anything goes (release priority). For bbf to fully work you need release priority on af-c. On the d7200, the firmware recognizes that you have set the bb to af on and it then forces release priority for af-c regardless of how the a1 menu is set. No reason other than marketing that they could not have added that feature to your camera. The d5000 could not do release priority but they added it to the d5100.
    I must have a really good camera.

  4. #34
    Senior Member
    Needa's Avatar

    Re: How to lock focus on D3500?

    Quote Originally Posted by blackstar View Post
    Ok, after several experiments and tests, I have come to the conclusion on focus for (at lease) my case. It turns out Nick is right about whether D3500 provides full BBF function. It doesn't -- whenever there is nothing or nearly nothing (e.g., empty wall, empty sky even with high cloud or dark sky even with bright stars) in view, shutter won't fire! So BBF with D3500 won't work for my planed star-shooting. However, BBF will be used for most of the other shootings for me. I have decided to use MF (thanks to Walt's suggestion) with hyperfocal distance for night-sky shooting after two-night trials. The first night, I was wrong to use a lighting subject for HF and got all stars out of focus... Next night, I used a non-lighting subject to make HF and the outcome is acceptable (for the test) if not great due to immense light pollution in the area.


    blackstar, What version of darktable are you using and are you shooting RAW? You may be able to create a parametric mask under the luminance tab in the exposure module and increase the exposure of only the stars.
    Thanks/Like blackstar Thanks/liked this post
     

  5. #35
    Senior Member

    Re: How to lock focus on D3500?

    Hi Needa, Thank you for your advice.

    I use DT2.6.3 the latest version I think. For the night-sky experimental shots, I made RAW & jpg. I'll try the luminance mask as you suggested and see how far it goes. I very much appreciate your prompt tip and help for my needs and learning.

  6. #36
    Senior Member

    Re: How to lock focus on D3500?

    @Nick,

    It's ok as long as I find the way (use MF) to shoot night-sky effectively (still learning to master MF with viewfinder especially in night time). BTW, I can still and will use BBF for most other shootings as I find it a great technique to use. So thank you for tipping and teaching me with BBF (if not from you, I may never get to know and use it).
    Thanks/Like nickt Thanks/liked this post
     

  7. #37
    Senior Member
    Needa's Avatar

    Re: How to lock focus on D3500?

    Quote Originally Posted by blackstar View Post
    Hi Needa, Thank you for your advice.

    I use DT2.6.3 the latest version I think. For the night-sky experimental shots, I made RAW & jpg. I'll try the luminance mask as you suggested and see how far it goes. I very much appreciate your prompt tip and help for my needs and learning.

    Another way might be to increase the exposure, then use the zone module to move the black point. By selecting the last 2 or 3 zones (left, as you mouse over each zone it will show the affected areas) and moving them to the left it will re-darken the sky. YMMV with these techniques.

  8. #38
    Senior Member

    Re: How to lock focus on D3500?

    How to lock focus on D3500?
    Needa,

    I tried the parametric mask by changing output/input. It seemed nothing happened... So I just changed the exposure and black level. It seemed working and bringing up more stars:
    Before:
    How to lock focus on D3500?-2020-02-19-21.23.32-s.jpeg

    after:
    How to lock focus on D3500?-2020-02-19-21.23.32-exp-s.jpeg

    And the high iso:
    before:
    How to lock focus on D3500?-2020-02-19-21.20.28-s.jpeg

    after (quite more editing):
    How to lock focus on D3500?-2020-02-19-21.20.28-exp-s.jpeg

  9. #39
    Senior Member
    Needa's Avatar

    Re: How to lock focus on D3500?

    Parametric masks be sure you turn on the mask in the lower right corner so you can see how it is being applied. Some techniques work better for certain photos than others. Remember the better you get in in camera to start, the better the final product. Keep at it.

    Link for some darktable videos.
    https://www.youtube.com/channel/UCng...geFwUGtsXA-17w





Quick Reply Quick Reply

If you are already a member, please login above before posting.

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •