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Old March 11th, 2005, 07:29 PM   #1
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true 16:9

Hey guys, I have a gl1 with an anamorphic adapter (True 16:9). Would I lose quality if I cropped it for 2.35:1?
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Old March 11th, 2005, 08:35 PM   #2
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You don't "lose quality," but you do lose the pixels which will have black bars on them. Unfortunately this is the only way to do 2.35:1, unless you want to get into upconverting to HD or using a projector with an anamorphic lens.
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Old March 11th, 2005, 11:03 PM   #3
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Using a projector with an anamorphic lens won't work. It would stretch your 16:9 image out too wide.

These are your only options:

1) Crop in post. You will loose roughly 25% of your resolution (assuming you shoot 16:9).
2) Shoot with an anamorphic projector lens instead of a 16:9 lens. This will create a 2.66 image - noticably wider than 2.35 but an interesting option.
3) Make your own anamorphic lens
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Old March 12th, 2005, 12:42 AM   #4
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I will lose 25% of resolution??? By my anamorphic adapter will give me true 16:9. Using a 2:35:1 will make the resolution 25% worse??
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Old March 12th, 2005, 08:22 AM   #5
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Normal 16/9 is (I think) 1.85 aspect ratio.
You want 2.35 aspect ratio, that's I think almost the double or something. So If you would want it at full resolution, you would have to have OR a 2.35 adaptor (I don't know if that exists for DV cams) or crop it in post, so you have 2 times 1.85 = 2.35.
But yes then you'll loose some resolution, but... resolution isn't that important unless you plan to blow it up.

Good luck.
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Old March 12th, 2005, 08:25 AM   #6
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Actually, 16/9 is 1.78 (divide 16.... by 9!). But it is pretty close to 1.85:1 indeed.
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Old March 12th, 2005, 10:15 AM   #7
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Aaron, you don't understand what I'm suggesting - sorry, I didn't explain. If you set the camera for anamorphic widescreen mode ("electronic 16:9") and you also put the anamorphic lens on it, then you'll end up with roughtly 2.35:1 anamorphic on your tape.

Now when you project this, set the projector for anamorphic 16:9 mode and use an anamorphic lens on it. That will unsqueeze this back to 2.35:1. This is one company that makes a lens you could use http://www.panamorph.com
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Old March 12th, 2005, 10:45 AM   #8
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Ah ok! Thanks for clarifying Boyd!

Matt: By cropping a true 16:9 image to 2.35 you loose about 25% of the image resolution (it's covered by black bars).
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Old March 12th, 2005, 10:52 AM   #9
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<<<-- Originally posted by Rob Lohman : Actually, 16/9 is 1.78 (divide 16.... by 9!). But it is pretty close to 1.85:1 indeed. -->>>

Thanks for clearing that up, I was still doubting between the two :-)
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