Film has been improving considerably over the past 20 years in terms of clarity and experimentation. Future advancements include high-speed films that offer finer grain, wider exposure latitude, and better color saturation without sacrificing overall image quality. With digital cameras, it’s important to note that image quality deteriorates when you push the speed of the ISO past two stops. With film, this risk doesn’t exist.
Film mediums are finer grained and sharper than it used to be, and they are cheaper and longer lasting than digital mediums. The medium usually has a higher tolerance with lighting. Digital cameras are less tolerant when there are sharp contrasts, making the darker areas less detailed. When the lighting is homogenized, details in light and shadow look good in digital as well.
The Dynamic Range of film and digital mediums differ from each other. Dynamic range describes how well the media can capture extreme tonal range in a scene. When recording dynamic range, the image density is an important factor. Image density is measured from image brightness with optical densiometers, ranging from 0 to 4. More density means less brightness. Density is measured on a logarithmic scale, and values of density are captured by scanners called DMin and DMax. By calculating the differences between DMin and DMax scanners, the dynamic range can be derived. The greater the dynamic range, the greater the image detail in dark shadow areas of the photographic image. Film has a larger dynamic range, and for that reason, is more versatile in dark lighting conditions. The reason why more detail is shown is because the range is extended at the “black end” of the scale. The “black end” consists of positives, either prints or slides. With digital photography and cinematography, the highlights are washed out, so the level of detail is lower than with film. As you move up the scale, the dynamic range improves dramatically.
When comparing black and white film, color film, and digital or transparency, dynamic ranges vary across the board. While digital medium has 3.5 stops. Color film has 7 stops and black and white film has 11 stops. Film is able to handle high contrasts and resolutions without the risk of losing quality. Being that the range of brightness for human vision is about 15 stops, we can notice the difference in dynamic range between the 3 settings. Developed film has billions of grains of metallic silver, 1000 times the power of digital. The reason why digital broadcasts can look so sharp is because digital has a palette of millions of colors, making it appealing to the eye. Detecting and discriminating contrast is virtually a simple process. We can see about 7 to 10 stops of light at a single glance. Film lenses on digital SLR cameras are a new way of capturing crisp images. Digital specific lenses are built lighter, are smaller and cheaper, and maintain the same quality that a film lens would have on a 35 mm camera. The downside to them is that they are more expensive and less sharp. With small digital sensors, less sharpness is lost at the edges of the image area. The main disadvantage of adding a film lens to a digital SLR camera is that it can be bulky compared to their digital counterparts. I believe that the future will hold a place for both film and digital mediums, as long as new advancements for both mediums continue to take place.
1 comment:
You put a lot of relevant information into this post, and the explanations were very well informed and researched. The links you put in were also very relevant and informing about your topic. “Density is measured on a logarithmic scale, and values of density are captured by scanners called DMin and DMax.” I thought that this sentence was especially good because you link to a site that gives a definition while giving an explanation yourself. All in all, it shows that you put a lot of research and thought into the post and that you have quite a lot of knowledge about the topic.
However, I think that, at least for me, there is almost too much information. After hearing about all the differences in the mediums and explanations, I got a little lost. Also, your opinion does not really come into the post until very late. I would have liked to hear more from you throughout the post by using some kind of qualifying statements. I would also like to know what kind of advancements you see happening to the mediums in the last part of your post. But overall, I thought your post was well done and very informative.
Post a Comment