MOVIEtube ST Spezifikationen PDF herunterladen (Seite 10)

12 Golden rules for shooting with

MOVIEtube

on HD

1. Perform a gate check frequently

Check for dust and dirt on the clear protection filter behind the film lens inside the

MOVIEtube. Use a lens brush and/ or an air duster, in clean environment so not to scratch

the surface. Check the surface by panning over bright background like a white card, whilst

watching the image on the viewfinder or monitor

2. Watch T-stop on film lens

The film lens shouldn’t be closed down more than T=3.0. Best results are achieved with

open aperture on high-speed lenses (T=1.3) Notice that the more open the film lens, the

less depth of field you will get.

3. Watch out for grain

Check each shot for grain especially if you are filming with white and/or bright background

and doing slow camera movement. With the T-Stop down at 3.0, the grain of the

FILMscreen may become visible. In that case fully open the aperture and or avoid the bright

background and or restrict the camera movement.

4. Zooming gate.

If zooming in past the open size of the 35mm gate. Remember that the grain will slightly

increase. Filming with movements (pan, tilt, travel…) fully open the aperture on your high-

speed lenses to T=1.3. Also notice that zooming too close will close down the docking

cameras aperture even more and you’ll lose overall sensitivity.

5. Check for gate-vigneting

Make sure zoom is set to manual and your docking cameras zoom ring is fixed or marked

with tape at focal length 25mm on Sony HDV-Z1/ FX1. Frequently check if everything is still

as it should be. Important: Always check for vigneting with an underscan broadcast

viewfinder (MOVIEtube ST) or with a control monitor set to underscan mode.

6. Docking camera is set to infinity focus

Make sure, the docking camera’s focus is set to infinity by pressing the infinity button. An

infinity symbol will appear in the docking cameras viewfinder. This will set the back focal

length of the docking camera to the correct position. Switch focus to manual and tape or

mark the focus ring.

7. Docking Camera image stabilizer turned off

To avoid the gate shifting into your image, image stabilizers like Steady-Shot or IOS have

to be switched off.

8. Docking camera sensitivity

To shoot with the highest possible sensitivity, open the Iris completely. Consider shooting

with shutter speed 1/25 for cinematographic look and increasing the sensitivity by 1 Stop.

Also 6db gain will gain 1 Stop. HD Video can handle high gain, due to its high resolution.

Even 12db looks good. Remember shooting with celluloid? An 800 ASA film has a lot of

grain and it looks good. Don’t be afraid to use gain, check it out. Use it as a tool, like

choosing different film sensitivity.

9. Progressive 25p, Cine Gamma & other settings

Progressive mode (25 full frames/ sec) can support the film look. Nevertheless it’s lowering

the overall sensitivity of your system. In that case better use 1/25 shutter interlaced and do

the rest in postproduction. Since the MOVIEtube FILMscreen is design to achieve film look

with video, the image has a warm film-look, which is not to colourful in appearance. Check

Cine Gamma and other film presets on your docking camera with MOVIEtube. You might

not need it. Also check the colour temperature of your image; sometimes you may need to

do a white balance.

10. Confirm the record turned on

Don’t forget to start the docking camera by pressing the record button. If possible establish

a voice command like “Speed” or “Running” to avoid shooting without recording.

11. Neutral density filters

If you have to deal with bright light intensity while shooting exteriors, use the docking

cameras build in ND filters. Don’t stop the docking camera lens down more than T=4.0.

This will prevent seeing any dust on the outside of the ocular and a vertical black line from

the prism. You can also use “real” ND filters in a mattebox in front of your film lens, these

type of ND’s are offering the best quality. For shooting documentaries, you may need to

use the auto iris. In this case just limit the auto iris in the menu to not close down more than

f4.0.

12. Only use tested equipment

Before shooting we advise that you test your equipment like; docking camera, lenses,

matteboxes, filters, follow focus. Especially check the lenses for overall sharpness / quality

and for breathing ( zooming while changing focus). Wider lenses are softer than long lenses

above F40mm and tend to darken corners. Test Photo lenses, especial zoom lenses for

holding focus while zooming. Also if a lens causes vigneting it may be a 35mm regular gate

lens only! Or the lens is not centred properly anymore (old, damaged etc.) In that case just

slightly zoom into the gate. 16m lenses may work, but are not recommended. Caution:

Lenses, which measures more than 32mm from the bayonet flange to the end of the last

lens element, are not recommended. As it may crash into protection filter. Zoom lenses

where the iris diaphragm is near the bayonet flange, such as Cooke T3.0 18-100, T3.9 25-

250 and T3.1 20-100, are not supported

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