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tupp

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About tupp

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  1. tupp

    Scanning film

    Good to know for anyone working in that area. They have three scanners. Thanks!
  2. tupp

    Filters?

    Agreed. A good lens choice should reduce the video look more readily than diffusion filters. Vintage lenses are ideal. If you can't get Xtal Express, use a vintage spherical lens.
  3. tupp

    Filters?

    Yes, of course, but if one exposes properly and/or uses HDR features, then it might be possible to match "blown-out" areas in the frame. Additionally, lens diffusion scattering from "out-of-frame" sources is also influenced by lens hoods and matte boxes. In the 1970's, David Hamilton was the king of using lens diffusion while blowing-out highlights and light sources. As I recall, black-dot lens diffusion didn't appear until the early 1980's, and Hamilton would push Ektachrome which increased contrast, countering the softness/flatness produced by the lens diffusion. In
  4. tupp

    Filters?

    Certainly there are many diffusion effects that can be emulated accurately in post. Furthermore, there are also diffusion effects that are exclusive to post which can't be done with optical filters. However, there are some optical filters which can't be duplicated digitally, such as IR cut/pass filters, UV/ haze filters, split-diopters, pre-flashing filters, etc.
  5. Well, the 16S, the Bolex, the Krasnogorsk, etc. all had their eyepieces at the rear of the camera, so they weren't shoulder mounted. There were a few tricks that one could practice to keep them stable. There were also other brackets (such as belt pole rigs) that could help. Of course, weight could always be added for more stability. I am with you on shoulder rigs. A balanced shoulder rig is always fairly stable regardless of weight.
  6. Your P4K should closely match your P6K if you use a speedbooster with your EF lenses on your P4K. As you are likely aware, a speedbooster (or focal reducer) is just an adapter with optics that condense the image circle and character of a lens to a smaller size. Most M4/3 speedboosters will yield a Super35/APS-C frame and look, plus give an extra stop of exposure to boot. Here is a video comparing a Metabones speedbooster with a recent Viltrox focal reducer on the P4K, cued to the section comparing autofocus speed in lower light. To me, the Viltrox is good and the Metabones is be
  7. I didn't see any FPN with the BM cameras using Fairchild sensors. The BM cameras with CMOSIS sensors (BMPC, OG Ursa, Ursa Min 4k) can exhibit FPN if one is not careful, but having a global shutter is a worthwhile trade-off.
  8. The most important thing is that one can control the aperture (and view a scope). The aperture readout is not crucial. Most cinema lenses are completely manual for good reasons. There is too much riding on the line in larger budget projects to rely on decisions made by the camera or lens. Furthermore, any IS glitch could bust a take and/or force a cut in post, which could prove to be expensive and detrimental to the piece's impact. Additionally, it is likely that most cinematographers want lens manufacturers put their efforts into optical performance rather
  9. Please point out where there are assumptions or false conclusions. Okay. I asked if your lenses were EF-S -- there was no assumption (although I suspected as much, which is why I asked). Okay. Never experienced that. Are you shooting manual exposure or is the aperture automatically controlled? Never experienced that either, but I would tend not to use IS on a cinematography camera such as the P6K. On the other hand, do you think that your EF-S lenses would perform on the P6K just
  10. I think it is a combination of a biased interpretation of one's own link, plus poor comprehension of another somewhat misleading source. I already addressed the Gerald Undone video that you linked. I disagree with the conclusions to which he jumps in regards to dynamic range. He sets up arbitrary conditions (the size of the C70's sensor and the lack of NR options on the A7S III) for which the C70's dynamic range is "better" in his mind than the A7S III. However, at 09:52 in the video, he additionally states that the low light performance of the A7S II
  11. Ha, ha! I actually did click on the link to the long CVP video, but on my YouTube viewer the link didn't parse correctly to the point that I now see that you cued. Although that video is not actually a comparison between the C70 and the A7S III, I noticed that a few seconds after your cued point, your CVP boy states: "Usable" is not the same thing as "clean." The A7S III is "clean" at 12800, while the C70 is "usable" at that same iso. Again, please link examples of heavy artifacts that appear above 12800 iso in the A7S III, as you maintain, and please link the
  12. Why? Do you actually have EF-S lenses? Your EF lenses should basically work on all of those shallow mounts with adapters. If your lenses are electronically controlled, the most important thing is that the electronic aperture can be set. Why? Have you actually had a problem with an adapter? If not, please get over the notion that adapters are "bad." That is why it is important that cameras such as the BMP6K have a shallow mount -- it makes it possible to use your M4/3 lenses on the BMP6K (especially in the crop mod
  13. They likely retool for each new camera body, but no doubt there are shared components. The BM CEO once commented that people want the EF mount, but I don't think that is the real reason why BM hasn't used a shallow mount nor a shallow interchangeable mount. BM already has already had interchangeable mounts, but they just weren't shallow enough. If they would just offer such an interchangeable mount system that would allow E, EF-M, M4/3, L, Z, and RF mounts, then whole worlds of lenses and special adapters would be available for their Super35 cameras.
  14. Okay. The A7S III has more dynamic range than the C70. That video is over 40 minutes long (and it was produced by an equipment dealer). Please give a link cued to the specific section regarding iso, or please give an appropriate time code. Please link examples of heavy artifacts in the A7S III that appear above 12,800 iso. In that Gerald Undone video, I didn't see a comparison of the DR of the A7S III along with the C70. Also, I don't agree with with his reasoning on why the C70 supposedly has better capture dynamic range.
  15. Okay, but why would the quality of the BM protocols for EF lenses differ if they merely used an extra set of wiping contacts in the circuit? Furthermore, if BM bypassed the wiping contacts on the shallow mount by using a ribbon cable connector directly to the EF-mount (as I suggested), how would it adversely affect BM's existing EF protocols? The shallow mount doesn't really matter in regards to maintaining the quality of BM's EF protocols, as the contacts on the shallow mount can be bypassed, if necessary. The camera would be an EF-centric camera with a default, bolted
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