[Konvas] Anamorphic film gate size

[Sean McVeigh]

I should point out that Bruce probably meant 1.178:1, and not 1.78:1, in 
case anyone is wondering what is wrong with their calculator.
Cheers,
Sean

Bruce McNaughton wrote:
>
> 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 <http://www.julysun.com>
>>  
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