Page 1 of 2 12 LastLast
Results 1 to 20 of 35

Thread: newbie need help

  1. #1
    Member
    Join Date
    Sep 2010
    Location
    Singapore
    Posts
    39

    Default newbie need help

    took this photo using wide angle lens,
    but the four corners were having dark corners around the photo.

    why is this so?

    is it because need to remove filter before using wide angle lens?

    any idea how to remove the dark corners?

    pls kindly advise.

    thx.


  2. #2
    Senior Member
    Join Date
    Jul 2010
    Location
    Singapore
    Posts
    2,700

    Default Re: newbie need help

    questions . . .

    1 what filter are you using ?
    2 ring size of your filter and your lens . . .

    Can crop away . . .
    Shot more cos digital is FREE !!!

  3. #3
    Moderator catchlights's Avatar
    Join Date
    Sep 2004
    Location
    Punggol, Singapore
    Posts
    21,902

    Default Re: newbie need help

    one filter won't be so bad, did you stack filters?
    Shoot to Live, Live to Shoot
    www.benjaminloo.com | iStock portfolio

  4. #4
    Senior Member limwhow's Avatar
    Join Date
    Jun 2009
    Location
    Life revolves arOnd East Coast
    Posts
    7,049

    Default Re: newbie need help

    Hello, Philomae.
    I read your picture's EXIF data and it showed you shooting at f/8.0 and focal length of 20mm on your Canon 550D.
    By right, using a cropped body like the 550D with a crop factor of 1.6x, at 20mm one shouldn't get vignetting like this.

    Usually vignetting happens like this when:


    • your lens hood is not locked on properly.
    • your filter is too thick. But as I was say, at 20mm, it is really not wide enough to have a vignetting like this. One would usually expect vignetting on a 1.6x cropped body at a focal length of, say, 10-11mm. Thus if it is really due to your filter, then I find it strange.
    • Another possiblity is - you may be stacking several filters together such that at the end of the day, it is really really thick.

    My opinions here.

  5. #5
    Member dingaroo's Avatar
    Join Date
    Dec 2009
    Location
    Singapore | East
    Posts
    1,950

    Default Re: newbie need help

    Not exactly sure what 'wide angle lens' you were using. Was it the vitaCON Wide Angle Adapter? If it is, you've been misled into believing that it is a wide angle lens. Please let us know what is the exact lens you have used to take the attached photo.

    Also please us to help to help you. Tell us your lens filter.
    A picture a day keeps the blues away!

  6. #6

    Default Re: newbie need help

    yeah, it's quite hard to determine what is the cause of this because it seems really weird to have this degree of vignetting. what filters are you using??? was this taken in ubin?

  7. #7
    Deregistered
    Join Date
    Nov 2006
    Location
    Kuala Lumpur
    Posts
    7,061

    Default Re: newbie need help

    Quote Originally Posted by evilorgi View Post
    yeah, it's quite hard to determine what is the cause of this because it seems really weird to have this degree of vignetting. what filters are you using??? was this taken in ubin?
    Its Little Guilin at Bukit Gombak...

  8. #8

    Default Re: newbie need help

    One more guess..Did you create this special effect accidentally in post-processing image editing software ?

  9. #9

    Default Re: newbie need help

    Hardly heard cases of vignetting on crop bodies, unless you are using the wrong tool for the wrong job..

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

    Default Re: newbie need help

    Quote Originally Posted by dingaroo View Post
    Not exactly sure what 'wide angle lens' you were using. Was it the vitaCON Wide Angle Adapter? If it is, you've been misled into believing that it is a wide angle lens. Please let us know what is the exact lens you have used to take the attached photo.

    Also please us to help to help you. Tell us your lens filter.
    I think Dingaroo hit the nail here. Looking at the IQ of the pic TS posted, I think TS is using a "wide angle converter lens" thingy on his lens...

    TS, yes, you need to remove any filter before using any attachment to your lens.

    And if you are using a DSLR, and have to screw that "wide angle lens" on top your kit lens, I suggest you stop using this "wide angle lens" and buy a real wide angle lens that you attached to your camera body instead.

    If you are using prosumer cam or superzoom with fixed lens, make sure you are using a good quality wide angle converter. The following is a pic taken with my old Fuji S7000 with a Fuji Wide angle converter.


  11. #11

    Default Re: newbie need help

    Even if your lens hood is not loose, quite doubtful about why the 4 corners.

    Anyway, you can always PP your picture as below :



    Does all your photos turn out like this ?

  12. #12

    Default Re: newbie need help

    Quote Originally Posted by Philomae View Post
    took this photo using wide angle lens,
    but the four corners were having dark corners around the photo.

    why is this so?

    is it because need to remove filter before using wide angle lens?

    any idea how to remove the dark corners?

    pls kindly advise.

    thx.


    I also came across this problem when i was shooting at the CBD area in the afternoon due to stacking of two ND filter( The ND4 and ND8 together ). My shooting range is 24mm cos i using a APS-C body so need to x1.6 to 15mm so is equivalent 24mm.

    Below is the photo i took with 4 vignette corners



    So if you don want to have the vignetting effect on your photo, don stack more then two filter together when taking photo with a wide angle lens. Hope this will help u in some ways
    Last edited by cadefox; 26th September 2010 at 09:23 PM.
    [Canon 500D][EF-S 15-85mm][EF 50mm II][430EX II]
    HomePage's[http://cadefox.multiply.com/]

  13. #13
    Moderator daredevil123's Avatar
    Join Date
    Oct 2005
    Location
    lil red dot
    Posts
    21,627
    Blog Entries
    1

    Default Re: newbie need help

    Quote Originally Posted by Jeremy1 View Post
    Even if your lens hood is not loose, quite doubtful about why the 4 corners.

    Anyway, you can always PP your picture as below :



    Does all your photos turn out like this ?
    Eh.... that is not exactly good PP...

  14. #14

    Default Re: newbie need help

    Quote Originally Posted by daredevil123 View Post
    Eh.... that is not exactly good PP...
    How about below ?



    Just remove the 4 corners.....

  15. #15

    Default Re: newbie need help

    Quote Originally Posted by Jeremy1 View Post
    How about below ?



    Just remove the 4 corners.....

  16. #16
    Member
    Join Date
    Sep 2010
    Location
    Singapore
    Posts
    39

    Default Re: newbie need help

    all photos using the wide angle lens turned out to have the four dark corners surrounding the photos.

    PP?
    Photoshop?
    Don't have adobe photoshop software.


    was using the Hoya HMC UV(c) 67mm filter & the AF Digital wide angle w/macro 0.5x67mm lens.

    however, i was told that the wide angle lens is able to attached onto the filter without having to remove the filter from the kit lens.



    Thanks for helping Jeremy1!

  17. #17
    Member
    Join Date
    Jun 2010
    Location
    Singapore (West)
    Posts
    690

    Default Re: newbie need help

    PP = Post-processing
    Canon 550D | EF-S 18-55mm f/3.5-5.6IS | EF 50mm f/1.8II |
    My Humble Flickr

  18. #18
    Member
    Join Date
    Sep 2010
    Location
    Singapore
    Posts
    39

    Default Re: newbie need help

    Quote Originally Posted by Diluted View Post
    PP = Post-processing


    oh!
    thx diluted!

    i'm still learning.


  19. #19
    Moderator daredevil123's Avatar
    Join Date
    Oct 2005
    Location
    lil red dot
    Posts
    21,627
    Blog Entries
    1

    Default Re: newbie need help

    Quote Originally Posted by Philomae View Post
    all photos using the wide angle lens turned out to have the four dark corners surrounding the photos.

    PP?
    Photoshop?
    Don't have adobe photoshop software.


    was using the Hoya HMC UV(c) 67mm filter & the AF Digital wide angle w/macro 0.5x67mm lens.

    however, i was told that the wide angle lens is able to attached onto the filter without having to remove the filter from the kit lens.



    Thanks for helping Jeremy1!
    So you are using a DSLR... 550D... oh ok.

    Anyway, the problem is with your "AF Digital wide angle w/macro 0.5x67mm lens". It is a piece of junk. If you want to take real wide angle shots, get a ultra wide angle lens, like Canon 10-22, Tokina 11-16, Sigma 10-20.
    Last edited by daredevil123; 26th September 2010 at 11:12 PM.

  20. #20
    Moderator daredevil123's Avatar
    Join Date
    Oct 2005
    Location
    lil red dot
    Posts
    21,627
    Blog Entries
    1

    Default Re: newbie need help

    And this is the most I can do to save the picture... seeing how bad the IQ is for the entire picture. Most of the picture not in the center is soft if you look properly.

    This is the best I can do.

Page 1 of 2 12 LastLast

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
  •