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Stefano Stroppa

Member Since 30 Mar 2015
Offline Last Active Jul 04 2018 07:45 AM
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Posts I've Made

In Topic: Sony F5 sensor size and lens crop factor

04 July 2018 - 07:42 AM

If I’m not wrong, 

 

 

Native 4perf S35 (which is simple the original frame size that was used in silent 35mm) 

is something like 24.86mm x18.66mm, with a x1.39 crop factor.

 

The APS-C sensor which is 23.6mm x 15.5mm has a x1.5 crop factor.

 

I think the F5 sensor is somehow between these two values, with a sensor size of 24mm x 12,7 mm (native aspect ratio of 1.89), so it falls into the S35mm sensors range.

 

I’d not say that the 18mm becomes a 12mm, since the focal lenght of the lens doesn’t change, what changes is the angle of view.

 

So a 18mm lens on the F5 (without the crop sensor mode activated though, which would allow you to use S16mm lenses) has the same field of view of a 27mm set on the reference format (35mm).

 

The correct process is 18 x 1,5 = 27mm 

 

That’s the reason why with small sensors like in the black magic pocket camera you will find hard to get a proper wide angle shot.

 

I hope I’m all correct with what I wrote :)

 

Cheers, 

Stefano


In Topic: Lighting approach diner windows

21 June 2018 - 06:10 PM

If I were you, I’d try not to use much lighting, as they could create problems with multiples shadows, and you are using two cameras, so you might have some space problem? I’d keep it really simple, using a naturalistic approach (and you save on the budget, especially if you're thinking of renting an HMI, which may be quite expensive)

 

Depending on the look you want to go for, it seems to me by looking to the attached pic of the location that this has the right part of the diner, where the two subjects wii be sitting, which is sort of hidden from the direct sunglight of the windows, because of the closed door, and the bluish daylight coming in blend with the warmer top practicals of the diners.

 

- You could place an HMI outside the window, you could bounced on the left wall where the paintings are, so it doesn’t come direct on the two subjects. And this gives the ambience, you could slightly overexpose these windows.

 

- Maybe then you use soft (so not to cast ugly shadows on the eyes, unless that’s wanted) light faking the warmer top practicals, if you can rig any, or just shape the practicals with black fabric if you want it to just hit the table and not for instance all the wall behind the actor. 

 

- Or if you think you don’t want to blend in a warmer color, just keep the window as the main natural source and work with a few black fabrics to create contrast on the actors’ faces in the close-ups. Just slightly filling in if necessary: as you don’t see the windows in the close-ups you could  (and you won’t see the windows you’re free to place a light closer to the subjects, as it it comes from the window itself).

 

 

I don’t know.. I’m just giving you some tips from the little I can do, hopefully will motivate and inspire you to find the best approach for lighting your scene :)

 

Stefano

 

 


In Topic: Upgrading from Canon 5D Mark iii

27 March 2018 - 07:43 AM

Depends on how much you want to invest for the camera.

 

Personally, the cheapest option, which would give you the best in quality of footage is probably the Blackmagic Pocket camera: it allows you to shoot RAW, Pro Res,10bit,…, sure you’d learn so much in term of color grading, you could pair the camera with a metabones speedboster to reduce the 16mm crop factor and gain 1 stop. (It doesn’t have slow motion though, and it doens’t record more than 1080p). I think the Blackmagic micro cinema actually records slow motion, and it has all the features than the pocket has.

 

If you searching for something to shoot slow motion with (good camera also for photography), I personally really like the Sony a6500 (yet it records 8bit 4:2:0), and it's cheaper than the A7s II.

 

I haven’t tried the GH5, but never really liked the GH4. I don’t know, there’s something about that camera which I never really liked (even if people keep saying it’s got lots of better features than the sony a6500), but again this is just personal taste. 

 

Sony FS7 is great, but way more expensive. As Robin said, you could find a used one, which could be quit cheaper!


In Topic: Metabones speedboster true aperture

21 March 2018 - 10:33 AM

To compensate for the Speedbooster, I'd simply up the ISO on my meter by a stop.

Right, I didn't think about it. Thanks Mark!


In Topic: Fujica ZC1000 technical assistance

20 February 2018 - 06:53 AM

Try to ask Aperture in London (http://apertureuk.com/). I know they have in-house repair service for film cameras and lenses so it's written in their website. I don't think they repair 8/16mm and such, but I’m sure if you write them they’ll know where to address you.


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Rig Wheels Passport

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CineLab

Wooden Camera

Broadcast Solutions Inc

New Pro Video - New and Used Equipment

Visual Products

Willys Widgets

FJS International, LLC

Glidecam

rebotnix Technologies

Ritter Battery

Metropolis Post

Aerial Filmworks

CineTape

Gamma Ray Digital Inc

Paralinx LLC