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Ef 70 200mm f 4l usm zoom lens

Manufactured by Canon

The EF 70–200mm f/4L USM zoom lens is a high-quality telephoto lens produced by Canon. It features a focal length range of 70-200mm and a maximum aperture of f/4. The lens utilizes a ring-type Ultrasonic Motor (USM) for fast and quiet autofocus operation. It is constructed with Canon's L-series lens design, providing a durable and weather-resistant build.

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2 protocols using ef 70 200mm f 4l usm zoom lens

1

Detailed Morphological Documentation of Insects

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Legs and details of the male and female genitalia were drawn by means of an Abbe’s drawing apparatus on a compound microscope (Zeiss Jenaval) at magnification 130–500×. Wings were photographed on an Olympus BX51 compound microscope with an attached digital camera (Canon EOS 1200D). Whole adult (dry-mounted) specimens and heads were photographed by means of a Canon EOS 5D Mark III digital camera with a Nikon CFI Plan 10×/0.25NA 10.5mm WD objective attached to a Canon EF 70–200mm f/4L USM zoom lens. The specimen photographed by means of the latter equipment was repositioned upwards between each exposure using a Cognisys StackShot Macro Rail and the final photograph was compiled from multiple layers (~ 40) using Helicon Focus Pro 7.0.2. The final images were edited in Adobe Photoshop CS6. All morphological illustrations were prepared by the first author.
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2

Detailed Microscopic Documentation of Insect Morphology

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Legs were drawn on squared paper using a Reichert binocular microscope with an ocular screen. Details of the male and female genitalia were drawn by means of Abbe’s drawing apparatus on a compound microscope (Zeiss Jenaval) at larger magnification (130–500×). Wings were photographed on the compound microscope Olympus BX51 with an attached digital camera (Canon EOS 1200D). Whole adult (dry-mounted) specimens and wings were photographed by means of a digital camera Canon EOS 5D Mark III with a Nikon CFI Plan 10×/0.25NA 10.5 mm WD objective attached to a Canon EF 70–200 mm f/4L USM zoom lens. The specimen photographed by means of the latter equipment was repositioned upwards between each exposure using a Cognisys StackShot Macro Rail and the final photograph was compiled from multiple layers (20–40) using Helicon Focus Pro 7.0.2. The final images were edited in Adobe Photoshop CS6.
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