Canon 25 mm f:3.5, Manual

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Page 2: ...hy Do not endeavour to open up the lens If there is anything wrong return the lens to your dealer who will forward it to the manu facturers for their attention Note All Canon Manufactured Lenses except telephoto lenses 200 400 600 800 and 1000 which comes with reflex mirror housing are coupled with the Canon Camera Rangefinder Mechanism C O N T E N T S HOW TO USE CANON LENS How to dismount and mou...

Page 3: ...GE BY GRASPING ANY OTHER PART BUT THE BASE I N F R A R E D MARK Infrared Mark is used only for infrared photography After focusing in the usual manner read the object distance scale of the tens and then turn the lens so that the object distance is exactly opposite the R index mark The lens is now focused for infrared photography Infrared mark on any Canon lens is situated in a position where it wi...

Page 4: ...issue If further cleaning is necessary for removing fingermarks etc wrap lens cleaning tissue or lint free cotton cloth on tip of a stick and moist alcohol mixed with ether when possible and wipe the surface in a gentle circular motion from center to perimeter Never wipe with excessive pressure or you might scratch the surface 4 Do not store your lens in hot and or humid places The best way to sto...

Page 5: ...cal lengths The shorter the focal length of Che lens the wider the area covered by the picture but the objects in those pictures all appear small The longer the focal length the narrower the field covered by the resulting picture but in these cases the image itself appears bigger The use of lenses of different focal lengths then becomes a necessity Tor instance when we take photos of a group of pe...

Page 6: ...ation in the appearance of the foreground in relation to the surrounding area Again there are marked differences in the degree of the background With the long distance lens the background area is stronger and clearly adjusted in relation to the foreground giving an effect of solidness to the picture Again according to the size of the lens opening there are differences in the depth of the object be...

Page 7: ...cally coupled to the viewfinders for parallax you have to adjust the parallax manually by adjusting the parallax compensating scale of the FINDER COUPLER to match the reading on the DISTANCE SCALE of the lens By doing so the field you see through the finder will be identical with what the lens will register on film Note Even those viewfinders which are not designed for Model VT Canon can be used o...

Page 8: ...etely accurate and uniform in light transmission WIDE ANGLE CANON LENS LENS ELEMENTS 6 LENS M O U N T H E A D NON COLLAPSIBLE NON REVOLVING MINIMUM APERTURE f 22 DISTANCE SCALES 3 5 50ft or 1 20m inf ANGLE OF VIEW 75 MAGNIFICATION 0 56x COATING MAGENTA NET WEIGHT 159 grams or 5 6 oz Embodies new rare glass elements making possible the fastest aperture design in this wide angle field No barred dist...

Page 9: ...lack and white negatives NORMAL WIDE ANGLE CANON LENS LENS ELEMENTS 7 LENS MOUNT HEAD NON COLLAPSIBLE NON REVOLVING MINIMUM APERTURE f 22 DISTANCE SCALES 3 5 50ft or 1 20m inf ANGLE OF VIEW 64 MAGNIFICATION 0 7x COATING AMBER NET WEIGHT 125 grams or 4 4 oz World s fastest wide angle lens 64 superbly corrected for color definition and curvature free result at wide open This lens also features Canon...

Page 10: ... wide claim of pro fessional photographers There is no finer and faster lens with this focal length and field of view STANDARD CANON LENS LENS ELEMENTS 4 LENS M O U N T H E A D NON COLLAPSIBLE NON REVOLVING MINIMUM APERTURE f 22 DISTANCE SCALES 3 5 50ft or 1 20m inf ANGLE OF VIEW 46 COATING MAGENTA NET WEIGHT 142 grams or 4 7 oz Ideal all round lens not only for land scapes portraiture etc but als...

Page 11: ...d white and color STANDARD CANON LENS LENS ELEMENTS 7 LENS M O U N T H E A D NON COLLAPSIBLE NON REVOLVING MINIMUM APERTURE f 16 DISTANCE SCALES 3 5 50ft or 1 20m inf ANGLE OF VIEW 46 COATING AMBER NET WEIGHT 322 grams or 11 4 oz The first lens faster than f 1 5 which produces a camera image of superb defin ition and resolution wide open This lens even surpasses the resolving power of the already ...

Page 12: ...ght alloy mount Ideal for portrai ture excellent resolution popular with press photographers LONG FOCUS CANON LENS LENS ELEMENTS 7 LENS MOUNT HEAD NON COLLAPSIBLE REVOLVING MINIMUM APERTURE f 16 DISTANCE SCALES 3 5 100ft or 1 30m inf ANGLE OF VIEW 29 MAGNIFICATION 1 7x COATING AMBER NET WEIGHT 730 grams or 25 8 oz Semi long focus lens of CANON s unique design A light weight lens combining superlat...

Page 13: ...lloy Recommended for sports land scapes and press work Combines speed ami critical sharp ness TELEPHOTO CANON LENS LENS ELEMENTS 4 LENS M O U N T H E A D NON COLLAPSIBLE REVOLVING MINIMUM APERTURE f 22 DISTANCE SCALES 5 200ft or 1 5 60m inf ANGLE OF VIEW 18 MAGNIFICATION 2 7x COATING MAGENTA NET WEIGHT 438 grams or 15 5 oz Made with exceptionally light alloy Aberration corrections are nearly perfe...

Page 14: ... the 400mm lens DEPTH OF PHOTOGRAPHIC FIELD When a lens is brought into focus on any one subject here is a certain surrounding area which also will appear in focus This area can be evaluated from the distance scale calibrations For instance if we were to calculate it using a 50mm lens brought into focus on an object 25ft away and using an f 4 aperture the area of photographic depth would be an are...

Page 15: ...DEPTH OF FIELD DATE ON ALL CANON LENSES DEPTH OF FIELD IN FEET DEPTH OF FIELD IN METERS C A N O N LENS 25 mm f 3 5 ...

Page 16: ...DEPTH OF FIELD IN FEET DEPTH OF FIELD IN METERS C A N O N LENSES 28 mm f 3 5 and f 2 8 ...

Page 17: ...DEPTH OF FIELD IN FEET DEPTH OF HELD IN METERS C A N O N LENSES 35 mm f 2 8 and f 1 8 ...

Page 18: ...DEPTH OF FIELD IN FEET DEPTH OF FIELD IN METERS C A N O N LENSES 50 mm f 2 8 f 1 8 and f 1 2 ...

Page 19: ...DEPTH OF FIELD IN FEET C A N O N LENSES 85 mm f 1 9 and f 1 5 DEPTH OF FIELD IN METERS ...

Page 20: ...DEPTH OF FIELD IN FEET DEPTH OF FIELD IN METERS C A N O N L E N S 100 mm f 3 5 ...

Page 21: ...DEPTH OF FIELD IN FEET DEPTH OF FIELD IN METERS C A N O N L E N S 135 mm f 3 5 ...

Page 22: ...DEPTH OF FIELD IN FEET DEPTH OF FIELD IN METERS C A N O N L E N S 200 mm f 3 5 ...