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Brand:
The general trademark of a manufacturer by which the consumer knows its products. A manufacturer can have multiple brand names. Some manufacturers license their brand names to other producers.
Canon
Product name:
Product name is a brand's identification of a product, often a model name, but not totally unique as it can include some product variants. Product name is a key part of the Icecat product title on a product data-sheet.
EF 100mm 2.8 Macro USM
Product code :
The brand's unique identifier for a product. Multiple product codes can be mapped to one mother product data-sheet if the specifications are identical. We map away wrong codes or sometimes logistic variants.
4657A003 show
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Category :
The light-gathering device of a camera, typically containing a group of compound lenses. Lenses come in different lengths, with very long lens used for long-distance photography.
camera lenses
Data-sheet quality: created/standardized by Icecat
The quality of the product data-sheet can be on several levels:
only logistic data imported: we have only basic data imported from a supplier, a data-sheet is not yet created by an editor.
created by Canon: a data-sheet is imported from an official source from a manufacturer. But the data-sheet is not yet standardized by an Icecat editor.
created/standardized by Icecat: the data-sheet is created or standardized by an Icecat editor.
Included since: 30 Oct 2005
The date Icecat noticed for the first time that this product was included in the price list of a channel partner
Info modified on: 15 Mar 2017 01:30:16
The date of the most recent change of this product data-sheet in Icecat.
Product views: 107871
This statistic is based on the 68187 using ecommerce sites (eshops, distributors, comparison sites, ecommerce ASPs, purchase systems, etc) downloading this Icecat data-sheet since 30-10-05 Only sponsoring brands are included in the free Open Icecat content distribution as used by 66432 free Open Icecat users .
Long product name Canon EF 100mm 2.8 Macro USM Black:
The short editorial description of Canon EF 100mm 2.8 Macro USM Black
Zoom lens EF 100mm 2.8 Macro USM

Marketing text Canon EF 100mm 2.8 Macro USM Black

:
The official marketing text of Canon EF 100mm 2.8 Macro USM Black as supplied by the manufacturer
Canon initiated the EF lens line in March 1987 as part of the innovative EOS system with the underlying development concept of fusing automatic and manual operation. Heralding a new era in SLR photography, the EF lenses with built-in focusing motors were the first to communicate completely electronically with the camera body. Followed by the high optical performance L-series, incorporating the silent Ultrasonic Motor (USM) and at a later stage the world's first interchangeable SLR lens with an image stabilizer, the EF lens series today is the largest line-up in the autofocus SLR world. This telephoto macro lens is capable of focusing to life-size (1X) without attachments. Although it replaces the EF 100mm f/2.8 MACRO lens marketed in 1991, it is a completely new design. It incorporates a ring type USM giving quiet, high-speed autofocus. The full-time mechanical manual focus gives very smooth manual focusing. For the first time in a 1X focusing telephoto macro lens, inner focusing is used. The lens length remains constant and a long working distance of 149mm makes worrying about getting too close to the subject unnecessary. Also, during focusing the front ring does not rotate making use of front-mounting accessories like macro ring lites simple and effective. "Three-group floating" focusing construction uses three independently moving groups, which holds focusing-related changes of aberrations to a minimum giving excellent image quality all the way from infinity to life size.

Short summary description Canon EF 100mm 2.8 Macro USM Black:
This short summary of the Canon EF 100mm 2.8 Macro USM Black data-sheet is auto-generated and uses the product title and the first six key specs.
Canon EF 100mm 2.8 Macro USM, 8/12, 7.5 cm, 24°, Black, 5.8 cm, 600 g
Long summary description Canon EF 100mm 2.8 Macro USM Black:
This is an auto-generated long summary of Canon EF 100mm 2.8 Macro USM Black based on the first three specs of the first five spec groups.
Canon EF 100mm 2.8 Macro USM. Lens structure (elements/groups): 8/12, Thread diameter: 7.5 cm, Diagonal angle of view (max): 24°. Colour of product: Black. Filter size: 5.8 cm, Weight: 600 g. Magnification: 0.14x
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Lens system
Lens structure (elements/groups)*
The way in which a camera lens is constructed.
8/12
Focal length range (f-f)
Measure of how strongly the system converges or diverges light. For an optical system in air, it is the distance over which initially collimated rays are brought to a focus. A system with a shorter focal length has greater optical power than one with a long focal length; that is, it bends the rays more strongly, bringing them to a focus in a shorter distance.For an optical system in air, the effective focal length (f and f′) gives the distance from the front and rear principal planes (H and H′) to the corresponding focal points (F and F′).
100 mm
Thread diameter
7.5 cm
Diagonal angle of view (max)
24°
Design
Colour of product
The colour e.g. red, blue, green, black, white.
Black
Weight & dimensions
Filter size *
A filter is a screen, plate, or layer of a substance which absorbs light or other radiation or selectively absorbs some of its components e.g. a UV filter to reduce UV light. Filters come in various sizes.
5.8 cm
Weight *
Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
600 g
Other features
Magnification
The degree to which something is or can be magnified (made to appear larger than it is).
0.14x