8mm Film Scanner
Wednesday, 2. June 2010
How To Convert 8mm Film To Digital Format
Technology has developed so much over the decades that we have learned how to convert old formats to the newer ones. Indeed, it is sometimes imperative to do so in order to enjoy the oldies but goodies. For example, 8mm film is not used much these days. However, movies stored in 8mm film can be converted to digital formats, making it easier to access them.
There are various processes by which 8mm film can be converted digitally. Much like any other video format, 8mm film has a maximum resolution. According to the experts, an 8mm film can have anywhere from 800 to 1000 lines of horizontal resolution. This figure is important in determining the quality of the converted format. More than the resolution, the type and/or quality of the 8mm film also affect the quality of the converted video.
One of the most common (and easiest) ways to convert 8mm film is through real time transfer. The basic idea behind this method is to play the 8mm film and capture the images via another piece of equipment – usually a camcorder. As you may surmise, the quality is not that good. The colors will look slightly different and the images may even be blurry. Even with the use of high end recording equipment, the results are not that desirable with real time transfer.
Another method is called frame by frame. This method is similar to the previous one mentioned, except that a computer is used to send signals to the recorder to capture each frame as it comes out. The resulting video is a bit better – by 20% to 30% – than the video resulting from a real time transfer. However, the process is quite long and requires expensive equipment.
The best way to convert 8mm film is to use a scanner. An 8mm film scanner is generally accepted as the most efficient and also offers the best result. The idea behind an 8mm film scanner does not differ much from the conventional scanner that you use for still photos.
How does an 8mm film scanner work? A device is used to scan the film at a fixed length. Each film frame is scanned into a digital image, which is of a much higher quality than the real time method or the frame by frame method. The digital images may be in TIFF, DPX, or Cineon format. One drawback is that while the quality of the images is very high, you will need a huge amount of storage space as well. That is a normal trade-off however.
Once the entire length of the 8mm film is scanned, the digital images may be played back in video format. The playback rate is normally 24 frames per second, although this may vary depending on the system. The images may also be manipulated and mastered – among other things. It is easy to understand why, given the quality that an 8mm film scanner offers, it is the conversion method of choice by most people.