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HVX & anamorphic lens/adapter


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#1 Pedja Radenkovic

Pedja Radenkovic
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Posted 25 September 2007 - 01:00 PM

Hi there,

Is there any way to achieve 2:40/2:35 aspect ratio with HVX 200. I know by shooting the leader and cropping it in the post. How much that damages the footage?
But is there any way to use anamorphic 35mm or 16mm lenses with for example redrock adapter or P+S Tech. ? Any information on that? Thanks

Pedja
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#2 Michael Nash

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Posted 25 September 2007 - 05:19 PM

There's some chatter about using an anamorphic adapter on the HVX here:

http://www.dvxuser.c...ead.php?t=54396

There's nothing stopping you from using PL-mount anamorphic lenses on an adapter like the P+S Technik (anamorphic lenses are neither 35mm nor 16mm; just PL or PV mount), but you'd need A LOT of light to get a decent image. And the rig would also be very unwieldy and require extra lens support. And since anamorphic lenses squeeze the image 2:1, your final unsqueezed image from 16:9 HD would be 3.56:1, requiring you to crop the sides of that image in post to get back to 2.35:1.

Don't underestimate the expense of rental (+ insurance) of anamorphic lenses plus the custom support rig, if you're on a DIY budget.

Cropping a 720x1280 image down would give you about 540 lines vertically, but since the HVX is starting with 540-line chips you're really talking about 408 lines, uprezed. At that point your resolution may not be much better than a standard def camera, top to bottom. It may not look bad on DVD or the web (I'm sure many have done it), but would be very soft on a large screen.
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#3 Pedja Radenkovic

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Posted 27 September 2007 - 05:59 PM

Thanks Michael for this detailed response. Very much appriciated.


There's some chatter about using an anamorphic adapter on the HVX here:

http://www.dvxuser.c...ead.php?t=54396

There's nothing stopping you from using PL-mount anamorphic lenses on an adapter like the P+S Technik (anamorphic lenses are neither 35mm nor 16mm; just PL or PV mount), but you'd need A LOT of light to get a decent image. And the rig would also be very unwieldy and require extra lens support. And since anamorphic lenses squeeze the image 2:1, your final unsqueezed image from 16:9 HD would be 3.56:1, requiring you to crop the sides of that image in post to get back to 2.35:1.

Don't underestimate the expense of rental (+ insurance) of anamorphic lenses plus the custom support rig, if you're on a DIY budget.

Cropping a 720x1280 image down would give you about 540 lines vertically, but since the HVX is starting with 540-line chips you're really talking about 408 lines, uprezed. At that point your resolution may not be much better than a standard def camera, top to bottom. It may not look bad on DVD or the web (I'm sure many have done it), but would be very soft on a large screen.


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Aerial Filmworks

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Wooden Camera

Gamma Ray Digital Inc

Media Blackout - Custom Cables and AKS

CineLab

Opal

Glidecam

Willys Widgets

Metropolis Post

Paralinx LLC

Technodolly

CineTape

FJS International, LLC

Ritter Battery

Visual Products

Rig Wheels Passport