[Konvas] Anamorphic film gate size

[Bruce McNaughton]

Dear Kelly

The ASA standard aperture for anamorphic is 21.9 X 18.59 (.864 X . 
732)  This gives you an aspect ratio of 1.78:1 which is stretched 2:1  
giving a final ratio of 2.356:1

We take the gate out to 18.7 which helps a little with dirt etc along  
the edge of the picture.  Splicing is not an issue with the higher  
image because the projector aperture is 21.28 X 17.78, masking the  
final image.

Regards
Bruce
The aranda group
Melbourne
http://www.arandafilm.com.au






On 18 Feb 2009, at 19:23, Kelley Cross wrote:

> Hello all,
>
> I have a Kinor 35C and am prepping to shoot tests with my newly  
> acquired round front anamorphics. The gate I have (academy)   
> currently measures approximately 22mm x 16mm ( .866 in. x .630 in.)  
> I’m told that the default aperture size for the modification is to  
> enlarge the vertical aperture of the gate to 18.7mm. This is  
> confusing to me as the current aspect ratio for Panavision and most  
> anamorphic film gates is .825 x .690. I understand that the width of  
> the gate at  +-22mm is a lock and will more that likely be slightly  
> matted or eclipsed by the optical sound track, but if the gate is  
> vertically enlarged to .736 (18.7mm) isn’t that grossly over doing it 
> —besides encroaching real estate for splicing. In addition, the math  
> isn’t adding up for me. If the current aspect ratio for anamorphic  
> is 1.19:1, then in relation to 22mm, wouldn’t the modification be  
> closer to +-18.48mm?
>
> Just curious if someone out there has possibly addressed some of  
> these issues and could relate some helpful advise before I have my  
> engineer start cutting up my camera.
>
> Thanks,
> Kelley Cross
> www.julysun.com
>
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