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Hi everyone, I was wondering if I could get some insight, feedback, reviews, attempts etc at finding or modding a follow focus for older anamorphic lenses where the front element moves in and out like the Iscorama and Lomo roundfront lenses. Ive been leaning towards a lanparte follow focus and trying to join 2 of the smaller gears so hopefully the larger gear on the lens will just travel from one to the other. suggested by Mr Gale :) Anyone else have any experience on this. Is it even an issue....People have to have a solution for the Lomos at least. The Iscorama is tapered which p
The Northrup video (thanks KarimNassar for posting) got me thinking about the following math to match a crop sensor to an FF sensor camera (this was also helpful: http://www.josephjamesphotography.com/equivalence/#introduction ): Multiply the focal length by the crop factor Multiply the f-stop by the crop factor Divide the ISO by the square of the crop factor The first two equations deal with the difference in scale. The physical aperture (light opening, "entrance pupil") will be exactly the same: Given: f-stop = focal-length/aperture-diameter aperture-diameter = focal-length/f-stop
Hi everyone, I've been using the iFocus from Gini Rigs for a couple of weeks now and I just thought I had to share my opinion about using it. First of all, it's a nice follow focus, it's got hardly noticeable backlash and offers smooth focusing. The main disadvantage in my opinion is its size. It's really big and looks somewhat silly on my GH2 rig, but it does the job right when used properly. So how to get the most out of it? Well, out of the box, it has it's focusgear on the right side, closest to your camera, which is very common for follow focuses. But due to i