Photo Lens
Lens focal depth Influence of the runway?
Recently, I read reports about it and try to find how the influence of my digital photography.
href = "http://www.nikonlens.pannipa.com/2009/10/23/does-lens-focal-length-influence-depth-of-field/"> http://www.nikonlens.pannipa.com / 2009/10/23/does-lens-focal-length-influence-depth-of-field /
The fundamental question is: Is there an objective Wide Angle (short focal length), more depth of field of a telephoto lens (focal length) lens?
This taught us in books and photography magazines for a long time, and it seems that the more depth of field with a wide Angle Lens what to do with a TV -> Lens.
If you use Internet search of "Depth of Field", which will be achieved in many articles that say that with a wide angle lens does not increase the depth of field.
Tests conducted by many, including some of the photography magazine showing the depth field is not used according to the focal length is made.
It is a very technical issue and technically true. You can also perform similar tests, orAttempts to check for themselves. However, to make a practical standpoint, what does this mean for I, the photographer?
All information that we have seen so far is based on the assumption that the image size you've always the same basis.
The proof runs roughly as follows: with a zoom, take a picture of some using a focal length setting telephoto or long. After a wide angle zoon variable focal length setting. It could also be interchangeable telephoto focal length Objective withfixed and wide.
Well, take a small section with a wider viewing angle of up to the image is in the section of the same size as the image in the same section of the photo with the telephoto.
In consideration of resulting photographs, is depth of field is approximately the same in each photo. Basically no difference. Haveproved So, technically, "Zoom" to improve a wide angle lens is not depth of field.
But I'll give you a question. Why zoom or change to a wide-angle zoom in the first place?
Suppose you are standing before a great mountain scene is beautifully lit with color sunrise. Zoom to the telephoto position and a picture. Then, zoom and take a picture with an adjustment of the focal length is small.
Youwant and wait to see more depth in the second picture – the flowers by colleagues in the foreground, mountains and clouds. And that is what is displayed.
Is it in your mind when you steal from the second picture, we all know that the apparent depth of field to lose? No, the greatest depth field seems to be still in the picture taken with the wide angle focal length setting.
Increases, so that you could have a broader vision and depth agreat use of the field, or at least the perception of more depth of field. They also knew that the images appear smaller
http://www.nikonlens.pannipa.com/2009/10/23/does-lens-focal-length-influence-depth-of-field/
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