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Varicam with Zeiss Digi-Primes


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#1 Michael Totten

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Posted 01 October 2007 - 07:59 PM

Wondering how digi-primes translate to 35mm. I've heard it's 2.5 times. Is this correct?
For instance... A 24mm digi-prime would be the equivalent to a 60 mm lens in 35mm ?
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#2 David Mullen ASC

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Posted 01 October 2007 - 08:06 PM

Wondering how digi-primes translate to 35mm. I've heard it's 2.5 times. Is this correct?
For instance... A 24mm digi-prime would be the equivalent to a 60 mm lens in 35mm ?


Yes.
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#3 Michael Totten

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Posted 01 October 2007 - 08:13 PM

Yes.



Thanks David.

Curious what the advantage is using a Zeiss digi-Prime or perhaps the Zeiss Digi-Prime 6-24mm zoom over let's say other cine-style lenses such as the Fujinon C or E-Series Cine Zooms.

The thing that attracts me to the digi-primes is that they open to a T1.6, but beyond that what is the difference? Some people say they're more "film like"... it confuses me though as I hear they're much more SHARP. To me sharp feels like video.

I guess you can get a shallower depth of field in certain situations because they're faster? so that's the more filmic characteristic ?

thanks,
michael
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#4 David Mullen ASC

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Posted 01 October 2007 - 09:01 PM

The shallow depth of field from the fast speed helps; also, mechanically, they rack in and out of focus in a smoother way, more like cine lenses. The way lights look in the out of focus b.g. looks more traditional. But I can't say for sure that they are radically better than the new Fujinon primes, not having tested those.

HD has less resolution than 35mm, so I think it looks soft on the big screen compared to 35mm. So a sharp lens that is fast is a good thing.

But HD, maybe due to the limited latitude or the nature of a CCD, whatever, does look less flattering, more "edgy" in close-ups (even with the edge enhancement turned off), hence why a little mild diffusion may help -- but due to the generally soft look of HD-shot movies on the big screen, I'm a firm believer in not overdoing the diffusion.
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#5 Michael Totten

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Posted 01 October 2007 - 09:12 PM

The shallow depth of field from the fast speed helps; also, mechanically, they rack in and out of focus in a smoother way, more like cine lenses. The way lights look in the out of focus b.g. looks more traditional. But I can't say for sure that they are radically better than the new Fujinon primes, not having tested those.

HD has less resolution than 35mm, so I think it looks soft on the big screen compared to 35mm. So a sharp lens that is fast is a good thing.

But HD, maybe due to the limited latitude or the nature of a CCD, whatever, does look less flattering, more "edgy" in close-ups (even with the edge enhancement turned off), hence why a little mild diffusion may help -- but due to the generally soft look of HD-shot movies on the big screen, I'm a firm believer in not overdoing the diffusion.



Thanks David.
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Visual Products

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Abel Cine

Paralinx LLC

Aerial Filmworks

CineTape

New Pro Video - New and Used Equipment

rebotnix Technologies

FJS International, LLC

Technodolly

Tai Audio

The Slider

Broadcast Solutions Inc

Willys Widgets

Glidecam