Drive In Studio Walsall | SAM Photography

SAM photography is a Walsall based photographic studio specialising in both professional and commercial photography including business profiles. Our fully equipped drive in studio is available for hire including white room and green screen facilities together with video editing and photo retouching.

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Macro Photography

There are several kinds of equipment for making the image the required size. These include

  • Using a special-purpose lens called a macro (some manufacturers call it a micro), having a long barrel for close focusing. A macro lens might be optimized to provide its best performance at a magnification of 1:1. Some macro lenses, like the Canon MP-E 65 mm f/2.8, can achieve even better magnification— up to 5:1 macro, bringing the structure of small insect eyes, snowflakes, and other miniscule but detailed objects into striking focus.
  • Placing an extension tube between the camera body and the lens. The tube has no glass in it; its sole purpose is to move the lens farther from the film or digital sensor. The farther the lens is, the closer the focus (and the bigger the magnification). Also, less light will reach the film or sensor, therefore a longer exposure time will be needed.
  • Using a bellows attachment between the camera body and the lens to extend the lens to film plane distance. Similar to an extension tube, but adjustable.
  • Placing an auxiliary close-up lens in front of the camera's taking lens. Inexpensive screw-in or slip-on attachments provide close focusing at very low cost. The quality is variable, with some two-element versions being excellent. This method works with cameras that have built-in lenses.
  • Attaching a telephoto extender between the camera body and the lens. A 1.4× or 2× teleconverter gives a larger image, adding macro capabilities. As with an extension tube, less light will reach the film or sensor, therefore a longer exposure time will be needed.
  • Using a smaller film or sensor. Placing a rollfilm adaptor on a 4×5 view camera can give a macro image. Likewise, using only the central 1/4 of the area of a digital sensor (discarding the outer 3/4 of the pixels) results in a larger image. Enlarging a small portion of a 35 mm negative or slide also results in a larger image. Photographers might debate whether this is true macro photography, but semantics aside, it can result in a frame-filling photograph that is as large as the original subject.
  • Reversing the lens using a "reversing ring". This special adapter attaches to the filter thread on the front of a lens and makes it possible to attach the lens in reverse. Excellent quality results up to 4x lifesize magnification using fairly cheap, "standard" (not specially designed for macro) lenses can be produced. For cameras with all-electronic communications between the lens and the camera body, such as Canon EOS, reversing rings are available which allow all camera functions, including open aperture metering, to be used. When used with extension tubes or bellows a relatively cheap but highly versatile macro system can be assembled.
  • Reversing a lens of lesser focal length in front of a normally mounted lens using a very inexpensive "macro coupler," which uses two male filter threads to join lenses. This method allows most cameras to maintain the full function of electronic communcation with the normally mounted lens for features such as open-aperture metering. Magnification ratio is calculated by dividing the focal length of the normally mounted lens by the focal length of the reversed lens (i.e., when a 50 mm lens is reverse mounted on a 200 mm lens a 4:1 magnification ratio is achieved). The use of automatic focus is not recommended due to the extra weight of the reverse-mounted lens. Attempted use of automatic focus with this technique could result in damage to the camera or lens.

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Contact us on:

Sam Photography
Unit B | Green Lane | Walsall | West Midlands | WS2 8LJ
Telephone: 01922 611 170
Sallie: 07795 261 054 email: sallie@magnante.com
Andy: 07932 138 937 email: andy@magnante.com

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