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Type: Posts; User: Jacek Zakowicz

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  1. Replies
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    Yes this footage reposting is out of control. I...

    Yes this footage reposting is out of control. I had to put him on my ignore list.
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    Sounds good- the second video deals with this...

    Sounds good- the second video deals with this issue where you have to refocus at the wide end
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    I've got to say however that most of the quality...

    I've got to say however that most of the quality photo zooms hold focus quite well and so far the ones I tested were fixed by correcting the back focus. Yours may be the same from what you wrote....
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    No I don't and I retracted that already....

    No I don't and I retracted that already. However...they are milking it on the second thought. Why not put the locking EF mount as standard on camera instead of the non locking one? They charge $2200...
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    Again, there is no difference between focus error...

    Again, there is no difference between focus error showing for retrofocal and non retrofocal lenses. No matter what they say on the internet... but then again- I've only done it for 32 years...
    That...
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    It is not tricky, maybe not practical because of...

    It is not tricky, maybe not practical because of the size of the rear optics but they are not that big for s35 anyway. As the matter of fact true telecentric machine vision application lenses are not...
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    here are some photo zoom testing videos. you...

    here are some photo zoom testing videos. you should get an idea how to check yours from them
    part1 https://www.youtube.com/watch?v=3pKFkXfOiog
    part2 https://www.youtube.com/watch?v=ki-31j51krE...
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    I think you are mixing up telecentric and...

    I think you are mixing up telecentric and retrofocal- they are not the same. Also I don't understand what "bigger errors" mean but I think you are contradicting yourself and Phil as well...
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    Did not know that. I take it back. Canon has my...

    Did not know that. I take it back. Canon has my respect again. Thank you for clarifying that Terry!!!
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    No shooting possible with the basic body since...

    No shooting possible with the basic body since there is no lens mount. Jeez what a bunch of losers you are Canon ...the sleazy trick
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    That is correct if all your lenses are the same...

    That is correct if all your lenses are the same back focus wise. BTW we should not use the term"back focus" in relation to the camera adjustment. Back focus is the term that applies to lenses. The...
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    This has nothing to do with telecentric design...

    This has nothing to do with telecentric design and everything to do with depth of focus which is a function of magnification and f stop. The wider the lens the more back focus sensitive. The closer...
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    We do a lot of that. Service, repairs including...

    We do a lot of that. Service, repairs including glass polishing and recoating, upgrades, rehousings. Per customer request.
    We are located near Los Angeles
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    I think these are just the dynamic range...

    I think these are just the dynamic range limitations- crushed blacks and overheated exteriors. The coloring is spot on for the period...
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    Possibly, but a cube with safely folding screen...

    Possibly, but a cube with safely folding screen and RF mount would have very few complaints IMO..rear NDs option in an adapter Add battery clip on the back so different size batteries could be used,...
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    This camera is an amazing value on specs but...

    This camera is an amazing value on specs but absolute turd ergonomically. It's still beyond me how they get it so wrong..... Even RED came to their senses with Komodo and finally made a small cube...
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    I thought the change was so minor, if any, that...

    I thought the change was so minor, if any, that made it insignificant. But then again- I'm not in the business of selling "hope in the bottle" ;-)
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    I have tried several times with several different...

    I have tried several times with several different uv lights for days at the time. Never made any significant difference on any Cooke or k35 lens . I concluded this UV 'miracle cure ' is just another...
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    It looks like the K35 85mm lens has the very...

    It looks like the K35 85mm lens has the very common Thorium element "browning/yellowing" issue- hence the color shift. Almost like putting 81/85 orange filter. The FD apparently does not have this...
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    I'm not so sure about that. It may also create a...

    I'm not so sure about that. It may also create a generation of lazy film makers the lack the vision and discipline to create great stories. Since everything can be reframed and fixed in post... We...
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    You really don't know much about patents: The...

    You really don't know much about patents: The burden of proving the validity of the patent is on the inventor when they defend the challenges in court. That sets precedence and confirms the validity...
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    I admit I just looked into this and he is a very...

    I admit I just looked into this and he is a very clever fellow. He must have noticed no permanent front glass over the BM sensor so he can utilize the full space and apparently make up the needed...
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    Yes and relatively few lenses work with these due...

    Yes and relatively few lenses work with these due to very limited clearance of +/-7mm max
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    No question about that. He is very smart. I...

    No question about that. He is very smart. I suppose he could stick a glass block in it and gain some space back but.... I wouldn't. Besides- who needs FF if you already have so many wonderful options...
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    It really doesn't make sense. Again, for a...

    It really doesn't make sense.
    Again, for a speed booster to work and the lens focus to infinity some back focus space needs to be removed. If they can take out the mount and make it thinner somehow...
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