Results 1 to 13 of 13

Thread: White balance lens cap

  1. #1
    Member e69087's Avatar
    Join Date
    Aug 2005
    Location
    Northern Singapore
    Posts
    407

    Default White balance lens cap

    Hello, i would like to know anyone use this device to set their DSLR camera custom white balance before going on to shoot pic?
    There are quite a few types and brands in the market, which one is value for money?

  2. #2

    Default Re: White balance lens cap

    To set custom white balance I don't have an expo disk or something similar. Instead I use a styrofoam cup (when available). There are a lot of websites that tells gives you the 'how-to' although it is dead simple. Just try it out - if only just to learn /practice setting custom WB.
    I used to do white balance when shooting jpgs but since moving to raw, I do it less now and will use a white balance card for post processing if I really need to nail the WB correctly.
    Website: Curious

  3. #3
    Member e69087's Avatar
    Join Date
    Aug 2005
    Location
    Northern Singapore
    Posts
    407

    Default

    Thanks for the reply. I saw some demo in youtube. Some showed they aim their camera at the subject with the WB lens cap mounted on the lens n take the custom WB reading.
    But i think the correct way is to turn around n aim at the light source falling onto the subject.
    So if i take a landscape infront of me, i should turn around n take the sunlight falling on me.
    Just my thought.

  4. #4

    Default Re: White balance lens cap

    Not really useful gear. If you buy please buy the cheap China clone to avoid wasting money.
    WTB Manfrotto RC4 L Bracket

  5. #5
    Member e69087's Avatar
    Join Date
    Aug 2005
    Location
    Northern Singapore
    Posts
    407

    Default

    Thanks for the advice. Perhaps i will not buy it at all.

  6. #6
    Moderator catchlights's Avatar
    Join Date
    Sep 2004
    Location
    Punggol, Singapore
    Posts
    21,901

    Default

    It is useful when you want to minimum processing at post.
    And also useful if you shoot video too.

    Remember there is no one tool fix all situations, some time you can ask your subject to hold the wb card for you, some time you can place the card next to an object. But you can't always fill the frame with wb card unless you have a big card.
    Shoot to Live, Live to Shoot
    www.benjaminloo.com | iStock portfolio

  7. #7
    Senior Member Nikonzen's Avatar
    Join Date
    Nov 2014
    Location
    Oklahoma, USA
    Posts
    2,546

    Default Re: White balance lens cap

    Pop Photo mag tested several different types few years back. ( http://www.ppmag.com/web-exclusives/...e-balan-1.html ) Most accurate was the Lally Cap. I bought one, used it till it was nearly worn out, and then lost it. Yes it works awesome. (Lally Cap) Here is the catch for me personally however...some cameras have a much easier (for me at least) way to get a reading for custom WB. My D5000 is a gem in this regard...go to custom white balance, fire the shutter, you have a reading. My D7K...I do not like the method employed with that unit. Still confuses me to this day... Note Lally cap fits 52mm lens well anything bigger is really tight.

    All that being said Lally Caps are about 20 bucks...I am a tight wad...I think material used for Lally Cap is this stuff -

    https://www.onlinefabricstore.net/gr...m_campaign=pla

    I'll buy some right now and let you all know as soon as I get it...ain't no way I will ever pay 20 bucks for that stuff again...lol If this is indeed the stuff I'll have about three 'handkerchiefs' of it in my bag from now on...

    edit...now 30 bucks...oh hell no!!!
    Last edited by Nikonzen; 9th October 2015 at 09:35 AM.
    Expand your mind or get left behind

  8. #8

    Default Re: White balance lens cap

    It is not effective because WB change from corner of the room to corner of the room, seconds to seconds, milliseconds too, depending on mixture of lights, nearer window you have daylight, some room mix fluorescent that changes every milliseconds, some mix in different bulbs of tungsten, or different age, many places are have started using LEDs, which makes things even more interesting. Some events have rotating lights of color. And when you add in your own flash and your varying shutter speed will influence colors again.

    There is no magic lenscap that set best white balance. In fact it only mess it up for you. If you are shooting fast changing scenes like an event, modern day camera gets WB way better than that lenscap, immediate on the go, adjusting to every different scene. If you are shooting a controlled scene, better to set in post production as you will be changing anyway. If you are shooting forensic and needs get true colors, a color checkerboard is better.

    Dont waste money.
    WTB Manfrotto RC4 L Bracket

  9. #9
    Member e69087's Avatar
    Join Date
    Aug 2005
    Location
    Northern Singapore
    Posts
    407

    Default

    Thanks for the feedback. I saw this review, seems like the expodisc yield consistent results.
    http://www.howtogeek.com/166532/how-...e-balance-cap/
    I also watch the 5 video hosted by Zach n Jody Gray on the expodisc. Seems like the disc can also help to get the correct 18% grey exposure.
    But i do find setting the WB n the right exposure rather inconvenient whereby i need to stand at the subject location n aim at the light falling on me. Perhaps doing a outdoor model shoot is alright.

  10. #10
    Moderator daredevil123's Avatar
    Join Date
    Oct 2005
    Location
    lil red dot
    Posts
    21,627
    Blog Entries
    1

    Default Re: White balance lens cap

    I have a couple of them. Got them in China, forgot the brand. cost around 8 bucks each.

  11. #11
    Senior Member Nikonzen's Avatar
    Join Date
    Nov 2014
    Location
    Oklahoma, USA
    Posts
    2,546

    Default Re: White balance lens cap

    Quote Originally Posted by e69087 View Post
    But i do find setting the WB n the right exposure rather inconvenient whereby i need to stand at the subject location n aim at the light falling on me. Perhaps doing a outdoor model shoot is alright.
    Yes what I discovered with Lally Cap is if light is not powerful enough I cannot get a reading. So yes good for a lot of situations but nil with other situations. Indoor lighting I have found doesn't always work. If such a tool can be had for cheap it is a great addition to the kit. Ben Loo is right in that it nails the colors pretty close, even better than camera WB my opinion, so it can save some post time.

    DD123 once mentioned some sort of color fidelity charts or something of that nature which would be the most precise tool to use I am sure.
    Last edited by Nikonzen; 10th October 2015 at 12:19 PM.
    Expand your mind or get left behind

  12. #12
    Moderator daredevil123's Avatar
    Join Date
    Oct 2005
    Location
    lil red dot
    Posts
    21,627
    Blog Entries
    1

    Default Re: White balance lens cap

    Quote Originally Posted by Nikonzen View Post
    Yes what I discovered with Lally Cap is if light is not powerful enough I cannot get a reading. So yes good for a lot of situations but nil with other situations. Indoor lighting I have found doesn't always work. If such a tool can be had for cheap it is a great addition to the kit. Ben Loo is right in that it nails the colors pretty close, even better than camera WB my opinion, so it can save some post time.

    DD123 once mentioned some sort of color fidelity charts or something of that nature which would be the most precise tool to use I am sure.
    That is for color calibration... quiet expensive if one is only going to use it for WB.

  13. #13
    Moderator Octarine's Avatar
    Join Date
    Jan 2008
    Location
    Pasir Ris
    Posts
    12,417

    Default Re: White balance lens cap

    WB cap and grey cards help you to get the technically correct white balance, that's all. What they can't do is to judge whether this result suits your scene / subjects and matches your intention.
    EOS

Bookmarks

Posting Permissions

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