Lesson 4ª

 

 

 

 

 

   

 

Types of Cameras

2) Medium format cameras:

This is the group of cameras found between 35mm cameras and large format cameras. These cameras are larger and heavier than 35mm reflex cameras. Its negative, or image, is larger than a 35mm negative. As a result, there is a higher definition in the picture; more details are visible and there will be a visual reduction of picture grain or pixels after making a copy in the same size.

Almost every medium format camera that use rolls, use 120 roll films. These may render from 8 to 16 photographs depending on the size we are using. Some cameras adapt themselves to 220 roll films which eliminate paper support. This doubles the length of the film and the quantity of pictures per film roll. The sizes of the different models are: 6 x 6, 6 x 4,5, 6 x 7, 6 x 9. There are 2 Types of Medium Format Cameras:

A - Twin lens reflex: designed by Rollei. They use 2 lenses of the same focal length (see lesson 9) to produce 2 images: what we see and what we will photograph. If the image we see in is focus, it means that the image we will photograph will also be in focus. If a prism is not added, the image we see is inverted from right to left. Since 2 lenses are used, there is a problem in parallel view: what we see is not exactly what we will photograph. The majority of cameras are only found with normal lenses. Some Mamiyas (a brand of medium format cameras) allow the photographer to change lenses replacing the front panel with the 2 lenses.

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