M2 Cinema Lens Adapter Guide d'installation télécharger pdf (Page 8)

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M2 Cinema Lens Adapter Manual

page 8

Why the image is inverted

This is the way 35mm lenses work. Even in a film camera, the image is upside down when it reaches the

film. People don’t describe “inverting the film” in post, but that is actually what they do. Although the

footage will be upside-down when you edit it, it is a trivial issue. Every popular non-linear editing system

provides a method for image inversion. It is usually as simple as flipping a switch.

It is possible to optically turn the image right-side up in a 35mm adapter using prisms. However, prisms

consume some of the light, making a dimmer image and reducing the range of lighting situations in which

the adapter can be used. And the extra glass provides greater opportunities for image distortion.

So, for better quality images and a broader range of use, the M2 leaves the image inverted in the camera.

Now that means the image will be inverted in the viewfinder and in the camera’s LCD, which can

complicate framing scenes. There are several methods for dealing with the inverted image in the camera.

Some people are not bothered by the inverted image or can find a more comfortable viewing position,

such as by operating the camera from the side rather than from the rear (looking down and back at the

LCD). Very few cameras include an “invert image” menu feature, although this would be an ideal

solution. A common addition to the M2 is a separate LCD monitor that either has an “invert” button or that

can be mounted upside-down. Some people add larger LCD monitors or high definition monitors to help

with manual focus of the 35mm lens.

Redrock also offers a software product called Redrock Revolution that enables a firewire attached

Windows computer to act as a video monitor. Revolution works with DV and HD source and inverts the

image at the touch of a button.

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M2 Cinema Lens Adapter Guide d'installation Page 8