Value for money (taking lens into account)
In favor of a digital SLR
Flexibility to use a wide range of lenses ...
Reflex - use of the taking lens (or a second, similar lens) as part of the viewfinder.
ring flash - a ring-shaped flash gun, designed to fit around the lens and give even lighting for close-ups.
Reisekamera - a type of portable view camera.
Hyperstereo The stereo base (distance between the two taking lenses) is greater than the average distance between a persons eyes (~63mm).
One lens is the viewing lens; the other is the picture-taking lens. The viewing lens is always wide open. That makes focusing and viewing easy, but depth of field cannot be viewed.
Placing an auxiliary close-up lens in front of the camera's taking lens. Inexpensive screw-in or slip-on attachments provide close focusing at very low cost.
A camera with movements in which the taking lens forms an image directly on a ground-glass viewing screen. A film holder is inserted in front of the ground glass for exposure.
Because Bay 1 filters are hard to find these days, I held a circular polarizer over the Yashica Mat's taking lens, making sure to orient it the same way as the polarizer over the Canon lens, so my light reading would be similar. How did this work?
This camera featues a viewfinder separate from the picture-taking lens, and is thus different from a SLR.
Parallax: The difference between the field of view seen through a camera's viewfinder and the image recorded on film by the taking lens of a twin lens reflex camera.
Direct vision cameras use a sighting device, or optical viewfinder, that is separate from the taking lens.
This is caused by the separation between the viewfinder and the picture-taking lens. There is no parallax with single-lens-reflex cameras because when you look through the viewfinder, you are viewing the subject through the picture-taking lens.
The key feature of the SLR camera is the ability for the photographer to look through the viewfinder and see directly out of the taking lens, and a clever optical trick is required to make this possible.
Jim discovered that, if you squeezed the binoculars together and placed them in front of the Zeiss Ikoflex, you could get one lens lined up with the viewing lens and one lined up with the taking lens.
In close-up photography, the optical viewfinder being offset from the taking lens, does not "see" exactly the same field of view, often resulting in a subject being partly cut off.
Single lens reflex-A type of camera that uses a prism and mirror system allowing viewing of the subject through the taking lens of the camera.
Parallax
The variation in viewpoint of a camera's optical viewfinder and that of the taking lens. This increases as you go closer to the subject.
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More Photographic Terms ...
SLR, or single-lens-reflex: A user looking through the viewfinder on this type of camera actually looks through the picture-taking lens, thanks to a series of mirrors and prisms within the camera.
The difference between the image seen by the viewing system and that recorded on the film. Problems occur as the subject moves closer to the taking lens when using TLR cameras. Only through-the-lens viewing systems can avoid parallax error.
(see TLR) ...
Lens-Shutter Camera A camera with the shutter built into the lens; the viewfinder and picture-taking lens are separate.
Parallax is the image difference between viewing from viewfinder and that recorded by the sensor or the film. The variance will become greater as subjects move closer to the taking lens.
Viewing directly through the taking lens gives a greater control of the image.
Parallax compensation. An adjustment made by the camera or photographer to account for the difference in views between the taking lens and the external optical viewfinder.
 See also: Lens, Camera, Finder, Viewfinder, Image
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