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Thread: ND Test

  1. #1
    Join Date
    Dec 2007
    Posts
    2,562

    ND Test

    I never used any filters. I just picked up a set of three ND filters 2,4,and 8 ND. Here are a few test images I took. Any help or advice would be greatly appreciated.


    Frank
    These were taken at around 7:30 just before sunset.

    No filter
    Iso 100 f/8 1/25



    1ND Filter 4ND
    Iso 100 f/8 0.4



    2ND Filters 12ND
    Iso 100 f/8 1/4



    3ND Filters 14ND
    Iso 100 f/8 0.6

    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  2. #2
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
    Posts
    9,554
    I have to tell you ... I was not ready for that color cast. The ND filters I have used tend to grey the image ... not hit it with magenta. I'll try and run some shots on Friday with the ones I have ... and see if this happens.
    Last edited by DonSchap; 05-26-2011 at 06:29 AM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  3. #3
    Join Date
    Aug 2005
    Posts
    6,879
    The colour shift worries me as well what are the make and model of the filters?

  4. #4
    Join Date
    Dec 2006
    Location
    God's Country - Australia
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    10,415
    yeah theres a problem there. my B&W's or Lee's dont give me any colour shift at all. maybe they have thrown the AWB out ? try setting the WB to a preset like "sunny" and then use the filters and see what happens. if its still the same result i'd return those filters immediately cos they are basically useless.
    D800e l V3 l AW1 l 16-35 l 35 l 50 l 85 l 105 l EM1 l 7.5 l 12-40 l 14 l 17 l 25 l 45 l 60 l 75
    flickr

  5. #5
    Join Date
    Aug 2005
    Posts
    6,879
    If you check my Experiments in Filtration thread you will see the my ND filters make no real difference in the colour over the no filter picture.

  6. #6
    Join Date
    Dec 2007
    Posts
    2,562
    I know they are cheap filters but I didn't think they would do that either. I shot them in RAW and I tried to correct the WB but it didn't help. I will give them another chance. Before I pick up better ones. I never used filters before and wanted to give them a try. I will check out the link.

    Thanks
    Frank
    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  7. #7
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    The clue is in the name, Neutral Density. If the filter modifies the colour, it ain't "Neutral".
    Cokin is pretty notorious for a strong magenta cast.
    It's not easy to make an ND filter that is uniform across the spectrum. Bottom line, you get what you pay for.

    What help do you need, Frank?
    In simple terms, an ND filter reduces the amount of light entering the camera.
    This offers the option of either a bigger aperture or a slower shutter.
    A bigger Aperture offers control of DOF and/or diffraction.
    A slower shutter offers control of motion blur.
    That's it!

  8. #8
    Join Date
    Aug 2007
    Location
    Brisbane, CA
    Posts
    3,591
    Expensive or cheap, filters can cause color casts. Singh Ray GND filters (very expensive) cause a magenta cast in the corrected area. Lee filters are much better, but I still occasionally have an issue when stacking filters. I've heard the Lee Big stopper has a blue cast and the B+W 10 stop ND has an orange cast. That said, I wouldn't think you should see any type of color cast on a 2 stop ND filter. Here's Singh Ray's explaination
    Lukas

    Camera: Anonymous
    I could tell you but I wouldn't want you to get all pissy if it's the wrong brand

    Flickr

  9. #9
    Join Date
    Dec 2007
    Posts
    2,562
    The help was about the color cast. If it is normal or from the cheap ND filters. From all the replies it could be both. I will give them another try and post back.

    Thanks for all the help and replies

    Frank
    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  10. #10
    Join Date
    Dec 2006
    Location
    God's Country - Australia
    Posts
    10,415
    Frank, the colour shift lukas is talking about with the better filters is at worst, a very faint tint. So no, that shift you posted in this thread is absolutely not normal at all.
    D800e l V3 l AW1 l 16-35 l 35 l 50 l 85 l 105 l EM1 l 7.5 l 12-40 l 14 l 17 l 25 l 45 l 60 l 75
    flickr

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