Tuesday, 30 October 2012

Rose

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Chili

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Cactus

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Miscellaneous

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Monday, 29 October 2012

How to Shoot Reversed Lens

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An Introduction to High-Magnification Macro Photography

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Simple Macro Focusing

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Reversed-lens

Macro photography reveals a new world that is normally unseen and can turn the ordinary into the extraordinary. Macro lenses may be expensive, but there do exist more budget friendly alternatives. This tutorial is about using a reverse mounted lens to take macro photographs. A lens to reverse mount, it need not be from the same manufacturer as your camera because the lens will be mounted by its filter threads and not the mount as is normally done. A good candidate here is the 50mm f/1.8 due to its low cost. The lens ideally needs to have a manual aperture ring, old manual focus lenses work well here regardless of make. Lenses without an aperture...

Lighting

The problem of sufficiently and evenly lighting the subject can be difficult to overcome. Some cameras can focus on subjects so close that they touch the front of the lens. It is difficult to place a light between the camera and a subject that close, making extreme close-up photography impractical. A normal-focal-length macro lens (50 mm on a 35 mm camera) can focus so close that lighting remains difficult. To avoid this problem, many photographers use telephoto macro lenses, typically with focal lengths from about 100 to 200 mm. These are popular as they permit sufficient distance for lighting between the camera and the subject. Ring...

Teleconverter

A teleconverter (sometimes called tele extender) is a secondary lens which is mounted between the camera and a photographic lens. Its job is to enlarge the central part of an image obtained by the objective lens. For example, a 2× teleconverter for a 35 mm camera enlarges the central 12×18 mm part of an image to the size of 24×36 mm in the standard 35 mm film format. Teleconverters are typically made in 1.4×, 1.7×, 2× and 3× models, of which 1.4× and 2× are most common. The use of a 2× teleconverter gives the effect of using a lens with twice the focal length. It also decreases the intensity of the light reaching the film...

Close-up Filter

In photography, a close-up filter, close-up lens or macro filter is a simple secondary lens used to enable macro photography without requiring a specialised primary lens. They work identically to reading glasses, allowing any primary lens to focus more closely. Close-up lenses typically mount on the filter thread of the primary lens, and are manufactured and sold by suppliers of photographic filters. Some manufacturers refer to their close-up lenses as diopters, after the unit of measurement of their optical power. While some single-element close-up lenses produce...

Extension Tube

An extension tube - also called extension ring - is used with interchangeable lenses to focus closer, useful in macro photography. The tube contains no optical elements; its sole purpose is to move the lens farther from the image plane. The farther away the lens is, the closer the focus, the greater the magnification, and also the greater the loss of light (requiring a longer exposure time). Lenses classically focus closer than infinity by moving all optical elements farther from the film or sensor; an extension tube simply imposes this movement. Extension tubes without electrical contacts will not allow an...

Working Distance and Focal Length

The working distance of a macro lens describes the distance between the front of your lens and the subject. This is different from the closest focusing distance, which is instead (usually) measured from the camera's sensor to the subject. The working distance is a useful indicator of how much your subject is likely to be disturbed. While a close working distance may be fine for photographs of flowers and other stationary objects, it can disturb insects and other small creatures (such as causing a bee to fly off of a flower). In addition, a subject in grass or other foliage may make closer working distances unrealistic or impractical. Close working distances also have the potential to block ambient light and create a shadow on your subject. At a given magnification, the working distance...

Motion Picture

Wasp's Territory Yellow Flower - Time Lapse Kungfu Mantis Dancing Beetle   ...

Depth of Field

The defining characteristic of macro photography is of course that subjects are shot at close distances. While this close camera-to-subject proximity can lead to visually arresting images captured from an intimate perspective, this sort of photography presents unique technical challenges as well. In this article I'll address one of the most significant of these challenges - controlling depth of field (DOF). The term depth of field refers to the area in front of and behind the point on which focus is set that can be rendered in sharp focus. As we'll explore throughout this article, DOF control plays a very prominent role in macro photography. The...

Composition

It's hard to overstate the importance of composition. For all of the emphasis we as photographers tend to place on which camera, lens or other gear to use, there's nothing that contributes more to a pleasing image than careful attention to the framing of your subject. In this article I'm going to discuss some of the compositional techniques most applicable to macro photography. I'll illustrate these with a lot of images, as these concepts are often much easier both to understand and apply with visual examples in mind. I have already mentioned POV (point of view) in an earlier article as a critical aspect of composition in...

Magnification

How to calculate macro magnification? Some photographers add on close-up filters , extension tube or teleconverter to maximize the macro magnification and wonder what magnification ratio they are shooting at. It is very simple, you only need a ruler. Life Size (1:1) It's all depend on your camera's sensor size, please refer to your camera specification to check the sensor size, or you can check your specification on www.dpreview.com .  For example, an APS-C DSLR, Canon EOS 60D's sensor size is 22.3mm x 14.9mm (from dpreview). A 22.3mm long subject fully fills up the width of the 22.3mm sensor,...

Mushroom

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Lotus

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Tiger Beetle

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Ant Mimic Spider

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Beetle

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