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Photography

Photographic Composition – Frames

Photographic Composition – Frames

Insert framing (in English) is a technique often used to emphasize the subject of our photography.

Inserting a frame that is either a window or even a single branch occupying one of the lateral areas of the photo has the ability to hold the movement of our eye that will no longer be free to move and focus on what is enclosed inside Of the frame. In addition, the same frame has a feature of no indifferent depth in most photos of the collection here, the frames are all in the foreground of the subject and often the same is out of focus. A trick that allows our brain to give a certain depth to our shot. Depth that is further emphasized in the case of the use of multiple frames as in the photo below it would be very different to photograph only the subject placed in the center of the scene and above all would miss the sense of distance from the photographer who is instead created by the two frames present. In the same picture the eye is almost trapped on the figure of man and almost forgets the landscape that is seen at the bottom of the picture.

Using a frame is easier than it may seem the case above is in fact an example we rarely find in reality (unless you often turn to construction sites). A frame can also be a door or a window as in the picture below where the darker color frame also introduces a discontinuity element smiles multimedia, a strong contrast to the subject of the scene.

In the absence of architectural elements one can use even more simple frames branches, leaves that surround completely or even only partially the subject. Let’s look at the two photos below in the first case, the plants almost cover the scene leaving a central area open on which our eye pauses (I also notice the chromatic choice, which is particularly interesting).

Another distinctive element that makes a frame more or less effective is the contrast the more the frame turns out to be different (as shapes and colors) from our subject, the more effective it will be. In the second photo, the branches are particularly dark to the point of not being able to see all the details it is not a mistake but a well-defined choice by the photographer that in this way makes the eye disinterested them.

The Objectives – The Fisheye

The Objectives – The Fisheye

The Fisheye Lenses, some already mentioned in the article on wide-angle lenses, are an extreme wide-angle lenses themselves. Their focal length is by far the shortest and varies between 6 and 16mm. Consequently, the viewing angle part by 180 ° in order to cover angles even greater when we use the very short focal length lenses (6 °). In these cases, however, the lens tends to be particularly cumbersome (see second photo) both as regards the overall size of the lens that the front protuberance (necessary both to overcome the limit of 180 °).

The fisheye obviously the extreme ones that are the defects of the wide-angle barrel distortion in particular this is not just mentioned but it is the raison d’être of a fisheye lens  akusaraprosound. In all the pictures taken with these objectives you will not find in fact never a straight line pleasant when it passes exactly through the center. In addition to the internal lines to the photo, they are also to be strongly curved contours of photography, which is why many fisheye photos are round instead of rectangular.

Fisheye lenses there are two types circular and full frame. The circular fisheye round produce an image, capturing everything that is in visual range. The full frame fisheye instead carry a crop (crop) circular image by returning a photograph in traditional format (rectangular).

 

And here are the results of two photographs the first one has the convergence of lines and the second lines are almost perfectly parallel.

A comparison we can see it between a Nikkor 500 and a traditional 18mm (original here). In the circle it is displayed photographed area with the catadioptric.

Beware of filters since the first optical element of a fisheye lens is spherical and leans heavily on the objective body, it is impossible to use normal threaded filters. Many fisheye, to overcome this problem, include inside of color filters or neutral density or a slot within which thread of the filters (usually of plastic or slides).

T it term fisheye (simply translated in fish eye) is due to the fact that a fish underwater is capable of displaying a hemisphere. The term was coined by Robert W. Wood in his book Physical Optics.

The first fisheye lens is signed Robin Hill and her name was Robin Hill Sky. It was built to display on paper cloud formations and produced on a plate image of the entire sky.