ARRI Tilt Focus, Instruction Manual

Page 1: ...Tilt Focus Instruction Manual as of May 1999 ...

Page 2: ...clamping for rotating the lens clamping for tilt scale for tilt socket for flexible shaft ...

Page 3: ...the symbols in this user manual 6 3 General Description 7 4 Mounting the Lens 9 5 Operation 11 5 1 Focusing 11 5 2 Adjusting the Working Aperture 11 5 3 Tilting 11 Scheimpflug Condition 14 Working examples 15 Setting a focal plane 15 Isolating a particular subject area with selective focusing 16 5 4 Turning 17 6 Technical Data 19 7 ARRI SERVICE 20 1 Contents ...

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Page 5: ...arried out by persons who are familiar with the equipment Repairs must only be carried out by authorised professionals Use only original ARRI spare parts and accessories Important Indications Avoid operational errors Attach lens cap and protective cap to prevent damage Clean optical surfaces only with a lens brush or a clean lens cloth In cases of solid dirt moisten a lens cloth with pure alcohol ...

Page 6: ...tification When ordering parts or accessories or if any questions should arise please advise your type of product and serial number Meaning of the symbols in this user manual photo indicates objects which are shown in illustrations ...

Page 7: ...age through a specifically set focal plane The ARRI Tilt Focus lenses are especially robust and precise An index scale simplifies exact reproduction of the chosen settings Focusing is carried out using a normal lens ring into which both normal follow focus mechanisms and adjustment motors can be inserted An important advantage of the ARRI Tilt Focus lenses is the fact that the image centre hardly ...

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Page 9: ...e lens mount receptacle of the camera completely by turning anti clockwise Push the lens into the lens mount receptacle without catching it The slot on the lens mount must fit over the index pin Press the lens flat onto the lens mount receptacle and close the bayonet ring by turning clockwise clamping for rotating the lens ...

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Page 11: ...ing according to the light values measured When tilting the lens the viewfinder image will darken somewhat This relates only to the viewfinder and will not be visible on the film 5 3 Tilting On lenses which are mounted rigidly to the camera the focused plane runs parallel to the filmplane In tilting a Tilt Focus lens the focused plane is displaced in accordance with the tilting movement The Tilt F...

Page 12: ...lting or turning movement and or when altering the set working aperture the viewfinder image should be checked for unintentional shading This could also be caused by a matte box despite a sufficiently large image circle Before tilting the corresponding locking knob photo on the Tilt Focus lens must be released When tilting the lens the viewfinder image will darken somewhat This relates only to the...

Page 13: ...ARRI Tilt Focus 13 A flexible shaft K2 34890 0 can be used on the operating knob for tilting photo to enable comfortable adjusting scale socket for flexible shaft ...

Page 14: ...e plane in the subject area to be depicted all intersect in one line This plane will then be completely in focus even at maximum aperture Through tilting and turning simultaneously the plane depicted in focus can be tipped in any direction The depth of field of a lens depends on the lens focal length of the lens the set working aperture and the distance at which the lens is focussed When the lens ...

Page 15: ...xamples Setting a focal plane lens plane film plane depth of field standard situation without tilt focus standard lens object plane lens plane object plane film plane depth of field settings according to the Scheimpflug condition ...

Page 16: ...t area with selective focusing By setting the lens plane against the Scheimpflug Condition an extremely small depth of field can be achieved This can be used for optically isolating individual objects lens plane film plane depth of field object plane ...

Page 17: ...re turning the lens the clamp for lens rotation photo on the Tilt Focus lens must be released and after turning fixed in position The lens has soft stops every 90 If a stop is not desired the pressure pad photo can be twisted out slightly with a screwdriver clamping for rotating the lens screw out pressure pad ...

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Page 19: ...groups 9 9 5 Image Circle diameter 58 2 mm 58 2 mm 58 2 mm 2 29 2 29 2 29 Front diameter 87 mm 87 mm 87 mm T Stop scale 4 22 2 8 22 2 8 22 Close up distance 0 3m 0 4m 0 5m 0 98 1 31 1 64 Weight g lb 990 1120 1230 2 18 2 46 2 71 lens angle degree TV horizontal 46 25 13 TV vertical 35 19 10 1 85 1 horizontal 47 26 13 1 85 1 vertical 27 14 7 Note the values above relate to standard 35 mm format 1 85 ...

Page 20: ...de PBentele arri de USA ARRI USA 617 Route 303 Blauvelt New York 10913 phone 914 353 14 00 fax 914 425 12 50 e mail arriflex arri com ARRI USA 600 North Victory Blvd Burbank California 91502 phone 818 841 70 70 fax 818 848 40 28 e mail arriflex arri com GB ARRI GB Ltd The Movie House 1 3 Airlinks Spitfire Way Heston TW5 9 NR phone 0181 848 88 81 fax 0181 561 13 12 e mail sales arri gb com ...

Page 21: ...o phone 02 26 22 71 75 fax 02 242 16 92 e mail info arri it ARRI ITALIA S R L Via Paolo Orsi 47 00179 Roma phone 06 72 67 07 97 fax 06 723 15 41 Canada ARRI Canada Ltd 415 Horner Avenue Unit 11 Etobicoke Ontario Canada M8W 4W3 phone 416 255 3335 fax 416 255 3399 e mail service arrican com ...

Page 22: ...ECHNIK TÜRKENSTR 89 D 80799 MÜNCHEN TEL 089 3809 0 FAX 089 3809 1244 http www arri de Ident Nr for Instruction Manual K5 52427 0 available Languages German English ARRI JT Technical data are subject to change without notice Printed in Germany ...