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Matthew Marshall

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Posts posted by Matthew Marshall


  1. Canon aren't even competitive with their Cinema EOS line!

     

    Compare the FS700R with the (brand new!) C100mkII. They're both essentially the same price, and yet the FS700 can be adapted to PL mount really easily, it has 200fps HD internally, and up to 960fps in reduced resolution. The FS700 has built-in ND filters. The FS700 can record in 12-bit 2k and 4k raw with optional accessories.

     

    Canon just released the C100mkII and its still not really comparable to the similarly priced (there's $500 between them) FS700R.

     

    And then there's the C300 and the $4,000 cheaper FS7...

     

    I think Canon are relying too much on the popularity of their lens mount, and an assumption that people want a camera with that mount natively.

    Ok lets be fair here, The FS700 is huge with the accessories on rail for raw. A most ungainly thing. Regardless I think what it really comes down to is the business.

    Canon, is cameras, picture cameras. They are, they always have been. Its the basis of their business and what they cater to, specifically like most of their competitors, consumer cameras. Accessible, easy to use from film up to when they first started making film cameras, but also good quality. Their business model is frankly different than Sony who has their hand in all echelons of technology and even the high end production cameras like the CineAlta.

    As such its an old holdover from film. EF is Canon, FD was Canon at the time. Picture Film cameras lived and died by their mounts. Setting theirs as EF from FD with autofocus and electronics and removing the bayonette mount is their claim. Canon is EF and for film, PL, thats mainly because if they didnt at least try to meet the standards of the industry nobody would use it at all. 

    Sony doesn't have this holdover, well yes ok they have the Alpha aka the Minolta AF which was bought when Minolta closed its doors. It was bought, they didn't develop it themselves. Now they have the E-Mount okay, thats all good, they developed that but they don't live and die by their mount. Its not synonymous with their name like it is with Canon EF. Sony does all technology, not just pictures and video. They dont profit just from lenses and cameras. They profit from their various branches and overall sales and consumers in their brand name... Sony. Sony glass doesn't have this huge long history like Canon has and a bitter rivalry with other manufacturers and "survivors" *rip kodak*. I mean even on a film production level Canon PL cinema has to compete with Zeiss, although there are other contenders in there as well.

    Hence the easy adaptation. Plus, rather smartly, they dont need to invest nearly as much R&D to lenses. Compared to what Canon and Zeiss probably invest. So they invest in the tech, the cameras, the 200fps bells and whistles and 4k, built in ND filters. To make the picture on very expensive highly R&D lens look great and satisfy the consumer in price. Plus Canon, they don't have as high end a quality camera as the CineAlta or the Arri. Sony has made movies, funded movies, had professionals paid by their company to make them and also are privy to their tips and advice and suggestions first hand from working on a movie production in house. Canon doesn't have this, at least not as closely integrated as... hey, im paying your checks... what works?

    Not to mention their other branches. Sony is a survivor and a competitive one. Sony Gaming survived the Sega Collapse, the introduction of the Xbox and the rivalry with Nintendo. Theres Sony music and the music industry, has so far survived the collapse of CD (ok thats a stretch but whatever just go with it XD)

    Here ill add a TL;DR

    To be frank, Sony can take some risks, add those features on. Add a bulky peripheral that may not be what everyone needs, but if you want it, hey have at it. They've survived alot.
    Canon, again, lives and dies by their lens, their cameras and thats it. You screw up, and dont make a return for all that R&D? You have nothing else to fall back on. I mean what else. I suppose their printers, however Fuji still has that cornered as far as im concerned. Anyways its not this way for Sony.

    Ok that was alot longer than I wanted it to be sorry everyone.


  2. I just cant help but think that all the Panasonic LA7200 needs is something like a focus module so it can be adjusted for different sensors and lenses. Something that replaces the existing back, add two more lens elements behind the existing back element. Adjusts them all to make it fit right. Plus a seperate ring for close and far focus. I dont know. something like that.


  3. Eh I dont know... I mean, Apples target market when it comes to Filmmaking is Medium to Medium High range. I mean most production studios and motion graphics companies use Linux for the turnkey. So really, looking at that generally most people in those ranges dont have a perfect workstation system.

    Theres alot of lost profit from Apple when it comes to Hackintoshing since, higher end custom made workstations are generally cheaper with better performance compared to the Mac Pro (Ok fine, according to most people anyways). Regardless, it may simply be a thunderbolt to SSD drive issue. Perhaps a firmware thing with the dock through thunderbolt and the install. I have a firewire to Thunderbolt adapter and its touchy as to if it decides to work or not, not to mention the peripheral i used it for was never update so it doesnt work. Also, based on the lack of a warning message I dont think Apple knew or would want the flack from the community as a byproduct of sneaking that in there.

    I would hit up Buffalo support first on this to be honest although there is probably little they can do. Might just be more of bug than anything else. Possibly throwing the security kext protocol while a drive bay with slightly incompatible firmware due to thunderbolt code changes ("tweaks) on Apples side.

    Otherwise, if you want to go the evil corporation route, im sure its more a primer, to get it in peoples heads that hey your SSD may not be supported so you may just want to get that Apple drive, and make sure its big because you may not be able to boot from a 3rd party one. You know, issue a statement that of course its not, fix the problems, but it gets out to the masses that it is. That little worm of doubt wiggling at the back of your mind, precursor to full denial of external SSD booting. Which is fine at that point because, well there are errors anyways, and by then the hardest of the hardcore fanboys will have already begun to rationalize it.

    Not saying i've ever owned any computer other than an Apple computer. I haven't and I've always been a fan at least until recently. I dont know, its lost its magic...

    In any case, i'd stay tuned for this one. However Mr Reid has good reason to react the way he did, as does anyone whos bread and butter relies on the systems and oh so delicate data. Plus if no one makes a fuss and that is what they are doing, preparing and testing for it, well... that pretty much gives them the go ahead to just do it as far as Im concerned.


  4. If possibly and if anyone has the lenses. Would someone be able to do a comparison between the Canon 16-35 2.8L and the Tokina 11-16 on the LA7200? Id be very interested in that. It appears though it may be because its was 35mm just at the focal length with it starts CA Plus i was using it at pretty fast speeds since it was dark out.


  5. 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.


  6. I wonder if you would still get the benefits of having it behind a lens. For instance integrated neutral density filters vs front mount ones. Although integrated neutral density filters are generally found just in front of the sensor.


  7. Anybody still keeping this up? I have what I think is a Tokina 0.5 diopter. Not sure, its a No 0.05 i believe ill have to check it but ive heard the 0.25 is better for clearing up CA on the LA7200.

    Not finding much on ebay these days.


  8. I have a question regarding the LA7200, basically in order to focus you would to move the back lens element or front. Would that be correct? Would it be possible to allow focus by adding another lens element behind the flat back lens element. Not sure how the image is presented by the square back of the LA7200.

    Im currently in the process of modifying it and frankensteining the lens with old junked vintage lenses to make it one whole lens that does not need a taking lens. Just want to make sure I have the physics right.

    Thanks in advance.


  9. Hm checked out a 50mm lens element. A Minolta. The thing is thick. Quite a bit thick.

    Not going to work its highly telescopic. I think the 28-80 wasn't nearly as telescopic because most of the telephoto elements were in the center part.

    Side note, may enable infinity focus on a Minolta adapter with the current FD element. Need to get myself an adapter.


  10. Anyone have a chance to pick up the cinefilm that was offered a while back?

    They have some now but its a red film roll. There was a blue one I really wanted to get my hands on.

    Cine200 Tungsten yeah.

    Wonder what chemicals they use to process the film for C-41


  11. Wide angle seems multi element, as does the macro element, unfortunately too strong. I threw an old 10+ diopter in and the focus throw seems about right. Terrible blur due to the single element, I assume. I've got some Surplus Shed glass coming in, so I'd rather hold off and play with that until I splurge for a +10 achromat. Anything vintage that is achromatic with that kind of power?


    Would you be able to use an achromatic then a regular non achromatic. Stack them to get the power you need and the CA fix?

    Might be cheaper.

  12. @tonydtv you seems to ask all the questions I have answers to. For some odd reason this flickr group I follow that makes custom lenses dont seem too concerned with removing coatings. Then again those are for multiple lensing element lenses.

    Anyways toothpaste apparantly will do it. Toothpaste and lots of rubbing. However coatings themselves are very thin and one of the issues you may run across when using an actual agent to remove it ( I cant remember right now what it was called ) is that it can actually start to shape the glass if you arent careful.

    So just... be careful XD


  13. Well ive been batting this idea around for a while. Trying to use 3d printing to fabricate a lens from LA7200 optics and junked out pieces of old lenses.

    Which btw, work better than you'd think. Ive recently spurned my own interest in this with a most recent successful experiment in creating a no CA FD to EF adapter and hunting for infinity focus.

    However even from an easy and acessible for most standpoint, I had this sort of makeshift might work setup in mind.

    Ef to mft or a larger diameter adapter (havent found quite the right one yet.)
    | - magnification lensing element affixed inside this - both to counteract going from ef to mft to ef XD (see blow)
    MFT to ef adapter with manual aperture
    |
    Reverse EF to macro lens adapter
    | - Possibly affixing an achromatic diopter here as well to fix any CA
    77-72mm step down ring (longer 72mm thread - Makes it stronger
    |
    Panasonic LA7200 adapter

    Not the most elegant solution but it might work?

    It would ideally work better with an anamorphic lens that has focusing abilities.

    However why not try with the LA7200 - Ive got this one already so.

    I have a post in creativity and ideas for the FD to EF lens adapter ill be updating if anyone is interested. Anamorphic is the next step once I get the adapter working.

    btw @tondtv I just found edmundoptics randomly a few days ago searching for some obscure search term i never tried. fantastic site looks very promising. I think I was researching glass for Google Cardboard or something lol
     

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