Here's a music video I directed and DOP'd recently, using BMCC 2,5K, 5D2 (ML RAW) and RX10 MK2.
 
 
We shot it over the span of two nights, the chosen location caused some heavy time constraints but it was visually perfect for us.
I wanted it to have an authentic old school film noir look and feel, so I ended up using some heavy diffusion on RX10 and BMCC, and vintage lenses on the 5D, and also lighting it in a very vintage fashion.
Of the three cameras, 5D definitely delivered my favourite images. The set of lenses used on it were Petzval 85/2.2, Super-Takumar 50/1.4 and Takumar 35/2.3. They gave it the signature swirly bokeh and naturally soft, dreamy look. I continually keep being blown away by how good ML RAW looks. 
BMCC was a solid performer, but due to the crop using vintage lenses on it becomes an exercise in futility. I had the Petzval on it for a few shots, but most of the Blackmagic footage was with Sigma 18-35 and some heavy diffusion filters (Cokin-P Diff1/2 and Pastel).
RX10 was used only for the slow motion at the end, and even with about 5KW of lighting blasted at it, it still struggled - which is nothing new, really. The shots turned out acceptable after some heavy filtering.
 
The Petzval lens was a new one for me, as prior to this I'd had only time for some small walkaround tests with it. I'm actually amazed at how beautifully that lens performs. Definitely a keeper.
 
Any feedback is welcome.

Two Luchadores face off in this battle for supremacy. 
 

Trying to understand / fix the LA7200 to make it clearer, less CA, sharper and more usable. Building a lens from other lenses to attempt to do this.
 
In any case, im trying to understand what is causing the issues in general using the LA7200 on DSLR or Blackmagic cinema camera.

Is it because of the sensor cropping then? The LA7200 was designed for a 4:3 sensor crop therefore it will not work correctly on the BMCC, or larger sensors?
 
Or is it simply a design flaw overall of the LA7200 , poor lens design / poor coating
 
If it is a crop sensor issue, what is happening on the LA7200 to cause issues because the sensors are larger crop.
 
Is the back lens element simply too small, where the image is being projected against the taking lens too small therefore when desqueezed you see parts of the image you really should not? i.e. the taking lens and the sensor is capturing too much of the la7200?

By adding a diopter behind it does that then, make it larger i.e. projects less of what is seen from the front of the la7200 to the sensor?

Or is it more complex than this.

I have tried using a diopter behind the LA7200 i think its a Tokina 0.5 Not sure. I mean it says No 0.05 so I dont know at this point. In any case it does not seem to help.

Just trying to understand, thanks anyone that can help.

Noktor asked me to test out their new SLR Magic Hyperprime 10mm T2.1 for MFT. Thought some people might interested to see footage, as lately most MFT tests are done on the GH4. Here's the video:
 

 
It's a pretty good wide angle option for the non-Speedbooster folk.
 
Thanks for watching!

Bingo Boom Chaga Laga!  :)