Focusing the View Camera: A Scientific Way to Focus the View Camera and Estimate Depth of Field. by Harold M. Merklinger. Merklinger’s method is less widely used, but is much easier to apply in the field. . Harold Merklinger describes his method for optimizing depth of field here. Harold Merklinger on Depth of Field. If you arrived at this page by a direct link, it will be helpful for background information if you read my article, More on Depth.

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The amount and direction of lens tilt determines where the Hinge Line is.

Merklinger’s Photo Books

One makes an arbitrary focusing movement and observes whether the focus got better or worse. Merklinger’s aperture for a disk of confusion of 5mm-6mm, for various lens focal lengths. Again, a few experiments can help us to understand the subject matter correctly. Howard Bond’s method presumes enough basic knowledge to at least get started in the right direction.

In a sense, Merklinger’s theory is a linear approximation of the traditional theory. One may also ask a natural question: There are similar expressions for working out the nearest and furthest points of focus, but I’m not going to give them, as they are well-known — just do a Web search for ‘depth of field formulae.

The graph in Fig. Let us have a look at Fig. It is more than likely that a person with perfect eyesight will not recognize a very familiar face from the distance of m. But they often do not understand that in some cases objects became fuzzy very quickly beyond the area of sharpness, while in other cases objects out of focus look only slightly diffused.


So what are his recommendations? These two rules also allow us to determine the conventional depth of field even when lens and film are tilted. The traditional zone of sharpness DOF can be asymmetrical under certain circumstances. The camera has no viewfinder other than a piece of ground frosted glass placed where the film will eventually go.

Technical Books on Photography by Harold M. Merklinger

The lens plane is a flat surface drawn through the center merllinger the lens and remaining perpendicular to the lens axis a line straight through the lens. His disk-of-confusion in the object field unlimitedly grows behind the object in focus see the diverging blue dash lines in Fig. But a number of questions still remain unanswered.

This is an interesting concept that I know I have often used with analyzing it when I was worried the hyperfocal method would not render sufficient distance detail, often as a secondary safety shot. And vice versa, if the contours are blurry, the picture is considered to be unsharp, no matter how many details can be distinguished. If you wish to move ahead quickly now, you may jump directly to any of the topics in the following. But those intersecting white lines in this image do not actually exist; they are an illusion of the eye!

If we change the focal distance of our lens while maintaining the same image magnification and keep the megklinger set to the same f-number, the zone of acceptable sharpness does not change.

Thus, to detect the differences between the two theories, we have to start shooting outside the green zone. Hyperfocal distance as it is traditionally employed in landscape photography — focusing at the hyperfocal distance ensures a depth-of-field from half the hyperfocal distance to infinity.


Kevin Boone’s Web site

This case is similar to the previous one. It now includes a version of VuCamText. In this case, we had to increase the distance between the toucan and the plate in proportion to the focal length.

Deviation from the subject. The new version will mdrklinger appear for some time. Resolution for distant objects does decrease. The downloadable version is actually expanded; the former addendum and the Shutterbug article on perspective and distortion have been included within the main text.

Now let us analyze Merklinger’s approach. An object twice as far from the lens as the point of exact focus will have to be as large as the lens aperture to be resolved.

If so, how many new details will we see, if we focus the lens at infinity? Focusing at infinity vs. Hrold contents of this page, the contents of other pages at this site and the contents of the downloadable portable document format files or printed versions thereof are copyright Harold M.

Merklinger’s aperture for a disk of confusion of 2mm-4mm, for various lens focal lengths.

Hyperfocal distances and Merklinger’s method in landscape photography

The experimental photos were taken without flash; therefore the illumination was constant for all the shots. The eyes remain blurry, and that is the point. The procedure is very simple. The size of the toucan should vary, of course.