Camera

Camera Viewfinder Types And Technology

Camera Viewfinder Types And Technology

The viewfinder or viewfinder of the camera is the part of the camera that the user uses to see the big picture of the photograph, adjust the composition, adjust the focus, etc. In its development there are several types of viewfinders in the different cameras.

These are some types of camera viewfinder technology.

Each camera viewfinder has its own characteristics and for this reason it is usually used as a differentiating element between one camera and another. Here are some:

1. Direct optical viewfinders commonly used by Lomo cameras

However, the direct optical sight is the most basic type of sight among all sights. This viewfinder is separate from the lens, which is the light input to the camera’s film or sensor.

What we see through the viewfinder differs slightly from what is actually captured in the lens. This is called parallax error, which is caused by the difference in angle of view between the eye looking through the viewfinder and the film or sensor behind the lens. So that the finished photo is slightly offset to the edge or down.

Photographers who are used to using the direct optical viewfinder can usually estimate the parallax error. You will intentionally move the camera a bit so that the final photo is what you want.

Normally, you can easily find direct optical viewfinders on point-and-shoot cameras. Most Lomo cameras, or commonly classified as toy cameras, also use this viewfinder technology.

2. Waist-level viewfinder used by older medium format cameras

As the name suggests, the waist visor is worn around the waist. This is due to the position of the viewfinder up. Among all types of visors, the waist visor is large enough that fans can have a wider view of the visor.

One of the special features of these viewers is the inverted display of the image between left and right. If you move the camera to the right, the object will move to the left and vice versa. This viewfinder is usually found on older medium format cameras, but some newer models and 35mm cameras also use this type of viewfinder.

When using a camera with this type of viewfinder, it is highly recommended that you use a strap or tripod. Use it to make the shot more stable. If you don’t have either, simply place the camera on a table or other stable surface to support it.

However, according to an article on the Petapixel website, there’s one important tip to know if you’re going to explore the waist-level viewfinder. Find the scene at waist height, but bring the camera closer to your eyes or keep your eyes close to the viewfinder if you want to adjust the focus. This is to avoid focus errors as well as angle of view composition.

3. Sportsfinder for super fast shots

Sportsfinder is a sight for quick shots. This should allow us to frame objects without having to look through the LCD or optical viewfinder.

In general, Sportsfinder consists of two frames without glass, which help us to ensure that the subject of the photo is correctly framed without having to look through the optical viewfinder or turn on the LCD screen. Although it takes some getting used to and practicing, it is not that difficult to use. Just align the two frames symmetrically and then place the photo object inside the two frames.

4. Dual lens reflex sights, use two dual lenses

TLR (Twin-Lens Reflex) visors are part of the visor at hip height. What is unique is that this camera uses two double lenses with the same focal length. The first lens is called “taking lens” or picture taking lens, its position is at the bottom. Meanwhile, the second lens serves as a lens that reflects the image through the mirror to the viewfinder.

As with the waist-level viewfinder, the image created in the viewfinder is swapped between left and right. Differences in lens position also cause parallax errors as occurs with the direct optical viewfinder. The difference is that the parallax error in the TLR only shifts the image up.

5. Single lens reflex viewfinder

Similar to the TLR, the Single Lens Reflex (SLR) also uses mirror reflection. The difference is that the SLR only uses one lens to do the work of both TLR lenses. SLR cameras have evolved over the years from plate cameras with mirrors that rotate to clear the path between lens and film to today’s mirrors that automatically fold when the shutter button is pressed.

When the mirror is folded, the light path goes directly to the film or sensor (in this type of digital camera). Additionally, pentaprism technology ensures that the image display in the SLR viewfinder is not swapped from left to right, as is the case with TLR. Due to its popularity, most photographers and the public use cameras with this viewfinder technology in both SLR and analog DSLR models.

6. Optical viewfinder

Optical Viewfinder (OVF) is a term for a viewfinder that displays the original results of the actual event. When looking through the OVF, any changes that occur, such as brightness, focus, sharpness, etc., are the original changes made during camera and lens setup. OVF shows the processes in a natural, clear and natural way without pauses. The OVF can be a specular reflection like an SLR or a direct view like a direct optical viewfinder.

7. Electronic viewfinder

The electronic viewfinder (EVF) is a smaller version of the LCD screen on the camera body. When you look through the viewfinder hole, you see a full digital display of photographic information generated at the current settings. Unlike live view on the camera’s LCD screen, the EVF has no light reflections that can obscure your vision.

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