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EF 100mm f/2.8 Macro: How to adjust your exposure.
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* One exposure degree equals + 1 f /stop Magnification 1:4
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EF100mm f/2.8 Macro Specifications
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Specification for the EF 100mm f/2.8 Macro Marketed April 1990 Lens Construction (group) 9 Lens Construction (element) 10 No. of Diaphragm Blades 8 Minimum Aperture 32 Closest Focusing Distance (m) 0.31 Maximum Magnification ( x ) 1.0 Filter Diameter ( mm ) 52 Maximum Diameter x Length ( mm ) 75 x 105. 5 Weight (g) 650
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EF35-350mm f/3.5-5.6L USM Specifications
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EF35-350mm f/3.5-5.6L USM This lens enables hand-held shooting from wide-angle 35 mm to super-telephoto 350 mm . The optical system features a six lens group construction with five movable lens groups, achieving a high zoom magnification in a lens nearly as compact as the EF 70-200 mm f/2.8 L. ... 0.6m is possible at any focal length from 35 mm to 135 mm , with a maximum macro magnification of 0.25 X obtained at 135 mm position.
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EF 300mm f/2.8L: How do I set the focus mode?
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EF 300 mm f/2.8 L: How do I set the focus mode?
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EF300mm f/2.8L USM : How do I set the Focusing Range?
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Setting the focus range, limits the area in which the lens can attempt to focus, thereby speeding up the focusing process. The EF 300 mm f/2.8 has three ranges: 3m - infinity (9.8ft - infinity)
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EF400mm f/2.8L II USM Specifications
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Marketed March 1996 Lens Construction (group) 9 Lens Construction (element) 11 No. of Diaphragm Blades 8 Minimum Aperture 32 Closest Focusing Distance (m) 4 Maximum Magnification ( x ) 0.11 Filter Diameter ( mm ) 48 Maximum Diameter x Length ( mm ) 167 x 348 Weight (g) 5 ,910
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EF 300mm f/2.8L: What are the parts and controls - Nomenclature?
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1 . Gelatin Filter Holder Lock Button 2. Mount Position Point 3. Neckstrap Fixture 4. Lock Release Nut 5 . Signal Selector 6. Manual Focusing Speed Selector 7. Tripod Mount 8. Focus Present Switch 9. Focus Mode Switch 10. Manual Focusing Ring 11. Reading Ring 12. Distance Scale Focus Range Selector
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Canonet S : How to check the exposure indicator.
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When the camera is directed towards the subject the needle will swing according to the strength of light, indicating the conditions for photographing . ... In the proper exposure range the intermediate points of the aperture stops indicate f/2.8 and 11, in the cases of the QL17 and QL19 and f/11 in the case of the QL25
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EF300mm f/2.8L USM Specifications
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Marketed November 1987 Lens Construction (group) 8 Lens Construction (element) 10 No. of Diaphragm Blades 8 Minimum Aperture 32 Closest Focusing Distance (m) 3 Maximum Magnification ( x ) 0.11 Filter Diameter ( mm ) 48 Maximum Diameter x Length ( mm ) 125 x 253 Weight (g) 2,855
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EF200mm f/2.8L USM Specifications
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Specifications for the EF 200mm f/2.8L USM Marketed December 1991 Lens Construction (group) 7 Lens Construction (element) 9 No. of Diaphragm Blades 8 Minimum Aperture 32 Closest Focusing Distance (m) 1.5 Maximum Magnifcation ( x ) 0.16 Filter Diameter ( mm ) 72 Maximum Diameter x Length ( mm ) 83 x 136.2 Weight (g) 790
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