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Panasonic LA7200 Anamorphic Adapter Build

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#1 Zachary Austin

Zachary Austin

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Posted 30 April 2017 - 08:50 PM

Hi, I'm posting for the first time on here.  I have been researching the Panasonic LA7200 concerns for quite some time now, and I am pretty informed on the former "tactics" to acheive a near single focus system for Near objects under 4 meters (13.1234 ft) to the camera.  If you aren't informed on this dilema, On the Panasonic LA7200 1.33x Anamorphic Adapter, there is a blind focus area from the camera to 13.1234ft in front of the camera.  Areas past 13ft are in focus to infinity, and that area is focusable, with the taking lens.

I am aware of the method where the guy cut the LA7200 in half and the incremented the exact distance between the LA7200 Lens and the Adapter separately.  This seems too much for me.  

I am also aware of the Front Diopter Fix.  Most people have been suggesting +0.4 - +1 Diopters, and these are mounted DIY in front of the Glass Matte Box thingy on the front of the LA7200.  

I have been dabbling with the mathematics, and I'm not an expert, and I haven't bought an LA7200 yet, but I was hoping some experts could entertain the ideas I'm about to list, that are completely different from other things I've heard to fix this problem.  Please be nice, because I am hoping for a miracle here.  

Here is the camera and Lenses I want to Shoot this on:
Camera:   Canon 5d Mark iii
Firmware: Magic Lantern (For anamorphic preview monitoring)
Lenses:  Canon 50mm f 1.8 STM Lens :

https://www.amazon.c...s=canon ef 50mm
 

Canon 35mm F/2 Old Model:
https://www.amazon.c...non ef 35mm old

Here is a list of Items that I am hoping might bring about a configuration that could possibly solve the LA7200 situation:

1.  95mm Close Up Diopters : preferably +0.4, but that is just a guess

2.  0.6x Wide Angle Adapter Lens : this link is to one for the panasonic HVX200
https://www.bhphotov...le_Adapter.html

3.  1.4x Teleconverter Lens For Canon EF Lenses :
https://www.bhphotov..._DG_EX_APO.html


And now, onto a configuration:
 Here is a picture to display the configuration I am suggesting.
 

Anamorphic Adapter Display.jpg

 

 

I am aware that some items in this configuration might be irrelevant.  I am wondering whether or not mounting the 0.6x wide angle adapter lens backwards from its normal and current position, would do something to the anamorphic squeeze and desqueeze it back from 1.33x.  

I am hoping we can discuss the theoretical effects that this configuration, or something like it by even eliminating some items here could have a major effect on correcting the blind focus area of up to 4meters from the camera, and correcting the loss of infinity focus from the diopter correction.  

Thanks :]

 


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