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Canon GL Series DV Camcorders
Canon GL2, GL1 and PAL versions XM2, XM1.


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Old November 4th, 2003, 01:57 AM   #1
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Zooming with the GL2

Is it possible to zoom fully into something such as a persons eye without the image becoming blurry? I kept trying to zoom into someone's eye (until it fills the screen) but the image becomes totally blurred out. Can I do this with the GL2's zoom or do I have to use a dolly?
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Old November 4th, 2003, 06:07 AM   #2
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Are you using auto focus or manual focus?
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Old November 4th, 2003, 06:51 AM   #3
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Sounds like you have digital zoom enabled. Turn it off and then try it. You'll probably have to get alot closer to your subject, though.

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Old November 4th, 2003, 07:31 AM   #4
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If you are in manual focus, zoom in your subject completly, adjust your focus until you have a sharp image, and zoom out. If you keep the same distance from your subject, you should be able to zoom in and out without loosing your focus.
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Old November 4th, 2003, 08:58 AM   #5
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You are actually TOO close to the subject. You can zoom in to the eye and keep the focus but you can't be closer than about 5 feet and do that. You wont be able to focus when zomming in tight to a close object. Get furthur away and you will be able to zoom to your hearts content.

For MACRO stuff you can get right on the object but you cant zoom in much to an object you are to close to.
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Old November 4th, 2003, 12:57 PM   #6
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What Rob said :P
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Old November 4th, 2003, 02:58 PM   #7
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I tried both the auto and manual focus. I had the camera close to the subject because I couldn't seem to zoom in enough from further away. Is there a macro feature on the camera? Where do I find it so that I can zoom extremly close into an object?

I tried focusing and zooming out but could never get sharp focus when I was so tightly zoomed in on the person's eye.

The digital zoom was not enabled.
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Old November 5th, 2003, 12:30 AM   #8
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Reverse Zooming!

If sharp zooming at the END of a zoom is needed - START the other way round and then REVERSE footage in post! - Neat trick eh?!?!?!

I have done this with massive zooms into flowers - all is okay so long as there isn't any "moving" things in the picture that would be crazy! I didn't want any bees or butterflies flying about "backwards" - ha ha ha ha ha . . .. But this works wonderfully, and you are always in control of the zoom. Meaning that you can zoom out to where ever you want. Zooming in you've only got one option - yeah?

Oh yes DO DO manual focus. Don't rely on Auto NOT hunting

Ho . . . . the other Reverse option is that neat trick where "things" come into focus. Start with somthing in real sharp focus then Roll that focus ring OUTTA focus. When back at the edit bench, reverse the footage - remarkable stuff to be achieved here - the flower thing was amazingly clear . . .


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Old November 5th, 2003, 10:15 AM   #9
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Well John if you stand about 5 feet away and still can't zoom close enough in on the eye with a GL2 then it can't be done. It has the largest optical zoom of any camera in this catagory, however it also does a decent job in digital zoom as well. Although I wouldn't ordinarily use the digital zoom, for the type of shot you are trying it would be fine. Turn that on and you should be able to zoom in on an eye to an atomic level.

Also, of course the GL2 does well with macro shots (meaning shots where you are right on top of the object) but you can not zoom on a macro shot, the lens isn't made that way. There is no "switch" for a macro. You must have the lense zoomed all the way out then get real close and focus.
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Old November 5th, 2003, 08:01 PM   #10
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Thanks for the tips. What I'm trying to do is zoom into the pupil of a person's eye until it completely takes up the screen and the screen is totally black.

I'm going to try the digital zoom but the image will get distorted of course, hopefull not too much though.

I've seen effects like this in music videos before where the next scene is reflected onto a person's eye and when the camera zooms into the eye the next scene is revealed creating a transition. That's what I'm trying to do and want to do it without a dolly if possible.
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Old November 5th, 2003, 10:20 PM   #11
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All cameras have a minimum focus distance. Attempts to focus on a subject closer than the minimum focus will result in out of focus images. The distance to subject, subject size and camera you're using will evidently not perform as you hope. Your scene exceeds the capabilities of your equipment.

The digital zoom feature might work (depending on other variables) but the pixelated look might not be what you have in mind. You may need to rethink the staging of your scene or rent equipment that will focus closer etc.
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Old November 6th, 2003, 12:18 AM   #12
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Would I need to dolly foward into the eye? Should I try to get a telephoto zoom lens?
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Old November 6th, 2003, 02:01 AM   #13
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I tried a zoom with a camera in After Effects with footage I shot and that worked good. So I'll zoom in with the GL2 as far as I can and add a 3d camera to zoom that extra inch into the eye. My test looked good. The 3d camera will add blur so that the image won't look pixelated when zoomed in on.
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Old November 6th, 2003, 02:08 AM   #14
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<<<-- Originally posted by John Flynn : Thanks for the tips. What I'm trying to do is zoom into the pupil of a person's eye until it completely takes up the screen and the screen is totally black.

I'm going to try the digital zoom but the image will get distorted of course, hopefull not too much though.

I've seen effects like this in music videos before where the next scene is reflected onto a person's eye and when the camera zooms into the eye the next scene is revealed creating a transition. That's what I'm trying to do and want to do it without a dolly if possible. -->>>


Joe,
I think you're being "had". That is, many, if not most, of these effects are built digitally, not exclusively with the camera. Elaborately-budgeted videos often draw upon the same compositing and rotoscoping skills/tools as elaborate television ads (which really is all that a music video represents). It sounds like you're basically attempting to recreate an effect that was probably not created exclusively with a camera, if a camera was even involved at all.

Dollying-in will not be a practical tactic with the GL2. Its manual focus mode and its lens design do not lend themselves well to pulling the precise focus required for such a shot.
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Old December 30th, 2003, 09:39 PM   #15
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yea i think i agree here. If you can use some kind of software to 'build' an eye with a picture inside of it you could do what your doing with the zoom, then when you get so close, drop in your pre 'built' eye graphic. Do a chroma key thing to make sure the colours are matched, sounds complicated, but good, im gonna have to try this now!
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