13 posts in this topic
Alright La7200 again... on the Blackmagic 2.5k
By Matthew Marshall
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.
NOCTURNE -- Footage with BMCC & SLR Magic 10mm
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!
1.9.7 Firmware Update adds In-Camera Formatting to BMCC & BMPCC
Bingo Boom Chaga Laga! :)
Mosaic Engineering are about to release anti-moire filters for BMCC and Pocket
No official prices announced. Estimated between 300 - 400 $.