For those of you with the Canon Rebel T1i

Discussion in 'Photography Beginners' Forum' started by WesVFX, Aug 28, 2009.

  1. WesVFX

    WesVFX TPF Noob!

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    Any of you notice when shooting video, when you zoom in/out with your lens, the lighting changes?

    I imagine it has something to do with the aperture changing during the zoom in/out process, but I know for a fact I've seen others shoot video with this camera zooming in/out and not having the same problem...

    so what am I doing wrong?
     
  2. Opher

    Opher TPF Noob!

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    Dont have one but i have a theory(probably wrong but hear it is).

    If you set the aperture higher than it might not change while "Zooming".
    Dont know if you can do that in video but figured i would try to help.

    Personaly i dont get the point of video on a SLR.
     
  3. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

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    I'm not 100% sure of the controls present for video mode - but the apertuer changing is a possible fact. If you look at your zoom lens it has a variable max aperture - f3.5 at 18mm and f5.6 at the 55mm end.
    So if your lens is shooting wide open during video mode then your going to notice a difference in exposure as the lens zooms, since it can no longer retain the same aperture.

    I can't be much more help than that I'm afraid - I dont have one of the newer video DSLRs :(

    Opher - its another tool/option to have in the camera and really all its doing is recording the liveview output inside the camera (with nifty other things thrown in of course). For someone who needs video sometimes, but not all the time and can't afford a dedicated video system (or perhaps is limited on carrying space) its a great feature. Kids, wildlife, sports, journalists - all and more can make use of video easily.
     
  4. FrankLamont

    FrankLamont TPF Noob!

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    Set your aperture to f/5.6 (or whichever high max. aperture your lens can offer when zoomed in).

    Done.
     
  5. WesVFX

    WesVFX TPF Noob!

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    well... just took a look at it. Tried everything I could think of. Couldn't find an aperture setting that you can adjust when in video mode... hmmmm

    I'm uploading a video to youtube now... I'll post it when it's finished...
     
  6. WesVFX

    WesVFX TPF Noob!

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    here's the video... you can see the light values "flickering" during zoom in/out...

     
    Last edited by a moderator: Sep 11, 2014
  7. boogschd

    boogschd TPF Noob!

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    i think that would be it
    i dont get why they put video recording in dslrs either
     
  8. WesVFX

    WesVFX TPF Noob!

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    ah ok... well if that's the answer then there must be no way to fix this little problem i'm having. The thing is, I KNOW i've seen videos shot on DSLR's where they are zooming in/out without this issue...
     
  9. WesVFX

    WesVFX TPF Noob!

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    on another note, here's a demo reel of a buddy of mine. He shot this completely on his 5D Mark II. So you can see that video on these cameras is indeed nice if done right :)

    Daniel Ceccorulli Demo Reel on Vimeo
     
  10. redtippmann

    redtippmann TPF Noob!

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    Or try some pro lenses. Tamron makes a 70-200 f/2.8 at a good price. That's my next lens. But it should help. And it's just a nice lens.
     
  11. WesVFX

    WesVFX TPF Noob!

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    yea that could be it too... i know this "kit" lens i have right now isn't the best lens. I'm always getting frustrated using it :lol:

    I definitely wanna get some new lenses, unfortunately i'm going on a 5 month unemployment stint. This was not a good time to graduate college. All the entry level jobs are being taken over by the "seasoned" elders :lol:
     

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