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Thread: Shadow from lens when using flash

  1. #1
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    Default Shadow from lens when using flash

    Hi,

    Am using D90 with built-in flash. Tried using Sigma 10-20mm lense (nikon mount) with flash. Saw that my picture has a shadow at the bottom of my picture. Seems to be from the flash that cast on the lense.

    1. Is this because the lense is too wide?
    2. Is this because of the built in flash? Need to get a flash that is higher?
    3. Anyway to overcome this? I have no issue on some shots with flash.. strange...

    thx in advance for advice..
    Nikon D90 Kit | Sigma 10-20mm | Canon IXUS 950IS | http://baconslh.blogspot.com

  2. #2
    Senior Member luna_sea83's Avatar
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    Default Re: Shadow from lens when using flash

    external flash would eliminate it

  3. #3
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    Default Re: Shadow from lens when using flash

    Quote Originally Posted by luna_sea83 View Post
    external flash would eliminate it
    Any other alternatives? Other than switching back to kit lens.

    Don't use flash?
    Nikon D90 Kit | Sigma 10-20mm | Canon IXUS 950IS | http://baconslh.blogspot.com

  4. #4
    Member Deming86's Avatar
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    Default Re: Shadow from lens when using flash

    No Flash = No Shadow = Dark

    As mentioned, if you need to use flash using a UWA, you gotta get an external flash and shoot off camera. Or you could shoot extra wide and try to crop out the shadows? =\
    Shoot with your heart, not for greed/ego..

  5. #5

    Default Re: Shadow from lens when using flash

    i suggest u invest in a good flash... confirm no regrets one.
    D7100,SB910,17-50/2.8OS,105/2.8VR,85/1.8D,2xE-M1,O60/2.8,12-40/2.8,35-100/2.8,14-42,LX100

  6. #6
    Senior Member zac08's Avatar
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    Default Re: Shadow from lens when using flash

    Quote Originally Posted by baconseet View Post
    Hi,

    Am using D90 with built-in flash. Tried using Sigma 10-20mm lense (nikon mount) with flash. Saw that my picture has a shadow at the bottom of my picture. Seems to be from the flash that cast on the lense.

    1. Is this because the lense is too wide?
    2. Is this because of the built in flash? Need to get a flash that is higher?
    3. Anyway to overcome this? I have no issue on some shots with flash.. strange...

    thx in advance for advice..
    Yes, a wide lens with hood will be a cause. Similarly if you shoot close ups with a long lens, you may also get this same problem

    Using an external flash will remove this issue.
    Michael Lim
    My Flickr Site

  7. #7

    Default Re: Shadow from lens when using flash

    Yeah, shoot with external flash...

    18-200 also has this "problem"...

  8. #8

    Default Re: Shadow from lens when using flash

    Quote Originally Posted by baconseet View Post
    Hi,

    Am using D90 with built-in flash. Tried using Sigma 10-20mm lense (nikon mount) with flash. Saw that my picture has a shadow at the bottom of my picture. Seems to be from the flash that cast on the lense.

    1. Is this because the lense is too wide?
    2. Is this because of the built in flash? Need to get a flash that is higher?
    3. Anyway to overcome this? I have no issue on some shots with flash.. strange...

    thx in advance for advice..
    can show picture?
    I photograph the dead.

  9. #9

    Default Re: Shadow from lens when using flash

    Quote Originally Posted by Flashbulb View Post
    can show picture?
    no need to show pic bah?
    quite common
    D7100,SB910,17-50/2.8OS,105/2.8VR,85/1.8D,2xE-M1,O60/2.8,12-40/2.8,35-100/2.8,14-42,LX100

  10. #10

    Default Re: Shadow from lens when using flash

    Hi. I use a Nikon D70 and the Sigma 10-20mm lens as well, and am familiar with the problem.

    Yes, your deductions are correct. Either zoom in, thereby losing the essence of the ultra-wide, or use an external flash.

  11. #11
    Member jasonteoch's Avatar
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    Default Re: Shadow from lens when using flash

    using a external flash will eliminate your problem. i am also having the same problem when using 55-250 close up.

  12. #12
    Moderator Octarine's Avatar
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    Default Re: Shadow from lens when using flash

    Quote Originally Posted by baconseet View Post
    1. Is this because the lense is too wide?
    2. Is this because of the built in flash? Need to get a flash that is higher?
    3. Anyway to overcome this? I have no issue on some shots with flash.. strange...
    1. No. If lens is too wide you would see all corners dark and only the center correctly lit by flash.
    2. Yes. The lens barrel is too big (diameter) and the flash sits too close to the lens. Thus, the lens casts a shadow. Yes, a flash that is higher positioned (or even off-shoe) helps.
    3. External flash is the best solution. If not available try to use any diffuser / bouncer to spread the light. The direct stream of light from the flash needs to be softened. If you bounce it to ceiling is will evenly fill the picture and the shadow is softened. This forum has lots of links about flash bounce and flash diffusers, also for internal flashes.

  13. #13
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    Default Re: Shadow from lens when using flash

    Here's an alternative thing you could try: A diffuser for your pop-up flash could help, but probably won't completely eliminate the shadow for an UWA lens. It'll also cut the range of your flash down but quite a lot.

  14. #14
    Member Deming86's Avatar
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    Default Re: Shadow from lens when using flash

    Quote Originally Posted by Gengh View Post
    Here's an alternative thing you could try: A diffuser for your pop-up flash could help, but probably won't completely eliminate the shadow for an UWA lens. It'll also cut the range of your flash down but quite a lot.
    Sounds reasonable, but would it be much different if you tried to lower the flash compensation? Sorry man, haven't shot wide with flash for ages
    Shoot with your heart, not for greed/ego..

  15. #15
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    Default Re: Shadow from lens when using flash

    Quote Originally Posted by Deming86 View Post
    Sounds reasonable, but would it be much different if you tried to lower the flash compensation? Sorry man, haven't shot wide with flash for ages
    Not quite. Lowering the flash compensation value gives lower contrast between the areas lit by the flash and the area in the shadow of the lens. A diffuser kind of creates a larger light source that located closer to the front of the lens, so that the lens' shadow is smaller in the picture and doesn't have as distinct an edge.

  16. #16
    Member Buggy's Avatar
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    Default Re: Shadow from lens when using flash

    unavoidable. unless with external flash, natural lighting or lights.

  17. #17
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    Default Re: Shadow from lens when using flash

    Thanks to all! Maybe for the time being avoid UWA night shoot with flash. External flash will be my Christmas wish.. (is santa clause a fan of clubsnap?)..

    thanks to all for the advice.. learning quite alot from here.. slowly...

    Will join northern group/woodlander outings if have the opportunity.

    Cheers,
    Bacon.
    Nikon D90 Kit | Sigma 10-20mm | Canon IXUS 950IS | http://baconslh.blogspot.com

  18. #18

    Default Re: Shadow from lens when using flash

    Getting an external flash is something quite necessary in my opinion. I'm very sure you will not regret investing in one.

    In addition to getting the external flash, you may want consider the method to diffuse the flash. Direct flash will be too harsh (in most situation) and very unflattering. Anyway, this is another topic altogether.
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