Ads by Google
RPG H - 1 lens
Like RPGS H - 1 such distortion lens, can "solution deduce" and expand the deformation of the material, so the digital front projecting system used together, aspect ratios 2.40:1 material to full resolution and totally brightness and width display.
The graph is distortion lens examples. We can see the lens an elliptic optics, when light into the camera, the optical device will transverse "extrusion" light, make the image in the longitudinal appear stretched.
If you use this distortion lens photography movie, so the images are the film frame picture twisted, all objects in the lateral extrusion were also longitudinal extension. Characters and objects will present one kind of unnatural gangly and form. However, the entire film frame picture got fully utilized, and not waste any resolution.
Below is the most important job of deformation process principle:
Due to the longitudinal compression lens in vertical direction "extrusion" image, it won't give image additional width. So, film frame of deformation amplitude full resolution images of preserved, 2.40:1 images can be normally broadcast out.
(shown)
1 cameraman and director need image
2 the light through the camera lens distortion
3 the camera on the lateral deformation camera image, make the image by extrusion longitudinal extension, characters and scenery are presenting an unnatural gangly and form
(shown)
1 film frame picture inside compacts images
2 the light through the vertical compression deformation after a shot in vertical compacts, to offset images in vertical tensile
3 in the longitudinal compression lens vertical after extruding, video according to normal proportion is displayed
fixed-camera
Zoom mode 1 (longitudinal extension 2.40:1) : the film through the projector projected by longitudinal after stretched 33%. For all the distortion lens system (including movable lens and fixed cameras), this is the most basic scale. Because aspect ratios 2.40:1 image than the projector fixed aspect ratios [image wide out 33%. The result is character and objects will present one kind of unnatural gangly and form, like the film. However, the screen will not appear black stripes, projectors, can use full resolution and complete brightness.
Zoom mode
Zoom mode 1 (longitudinal extension 2.40:1) : the film through the projector projected by longitudinal after stretched 33%. For all the distortion lens system (including movable lens and fixed cameras), this is the most basic scale. Because aspect ratios 2.40:1 image than the projector fixed aspect ratios [image wide out 33%. The result is character and objects will present one kind of unnatural gangly and form, like the film. However, the screen will not appear black stripes, projectors, can use full resolution and complete brightness.
resolution
"Even" for most of the projector/zoom implement it is "normal" zoom mode. Clement zoom mode can be accurately realized fixed lens system needed vertical compression value.
RPG H - 1 lens
Like RPGS H - 1 such distortion lens, can "solution suo" and expand the deformation of the material, so the digital ZhengTouYing system used together, aspect ratios 2.40:1 material to full resolution and totally brightness and width display.
RPG H - 1 lens
RPG H - 1 lens acceptable to spot diameter cannot exceed 1.5 "high x2.25" wide. Therefore, lens recessed, output beam wider projector were not suitable for use RPG H - 1 lens, if want to use, must be in high projection than the conditions of use.
Generally speaking, when the projection distance is long, suitable for use RPG H - 1 lens images generated 2.40:1, because the projector beams are usually small. Because RPG H - 1 lens adopts vertical compression (VC) technology, use the RPG H - 1 lens means that the final 2.40:1 image will and use RPG H - 1 before lens images with the same width adversaries.
We suggest that, if want to use RPG H - 1 lens get width, original 16x9 images of the projector projection than should be no less than 1.8 x.
Important: already mentioned above, use RPG H - 1 lens means that the final 2.40:1 image will and use RPG H - 1 before lens images with the same width adversaries. When installing the RPG H - 1 behind the camera, obtain the image by longitudinal squeezed, when calculating the screen size, should use the projector originally urbanus image width. This width is now 2.40:1 width, in this range using mentioned zoom mode 2 can normally broadcast urbanus image. Below slide with the graph shows in this process.
If the RPG H - 1 lens from optical path in off, casting eerie images will exceed 2.40:1 the screen heights. Obviously, we don't want to get this result.
Therefore, an RPG H - 1 lens are used in almost "fixed" mode, cooperate 2.40:1 screens use. The width of the image through the projector or zoom implement internal zoom mode adjustment, does not utilize will camera moves or move light path method regulation.
RPG H - 1 lens sometimes also used in mobile configuration, and cooperate to use [screen. In urbanus screen, 2.40.1 images of higher quality, this is because in these two kinds of format, the projector and resolution of the brightness all can be fully used. Then get 2.40:1 image is not better than the original urbanus characters frame images large, but to clear.
Fixed cameras most obvious disadvantages lies in that play like 1.85:1 and smaller format images of such urbanus when the number of pixels are lower. Obviously, the installation can move around the camera, can get adversaries and 2.40:1 the integrity of the performance. But from another view, installation fixed for the customer the camera can save money and energy, because the shot once installed just don't need to move. Fixed-camera advantages as follows:
All images materials, unit area brightness and resolution are the same.
Calibration will never change.
All format images vertical resolution are the same, and installation of movable lens effect the same and save the cost.