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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Leica 11145, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Leica 11145 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Leica 11145. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Leica 11145 should contain:
- informations concerning technical data of Leica 11145
- name of the manufacturer and a year of construction of the Leica 11145 item
- rules of operation, control and maintenance of the Leica 11145 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Leica 11145 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Leica 11145, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Leica service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Leica 11145.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Leica 11145 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
LEICA SUPER ELMAR-M 2 1mm f/3.4 ASPH. More than 30 years after the launch of Summicr on-M 1:2/50 mm, which is still a vailable, the Leica APO Summicron-M 1:2/50 mm ASPH. r epresents a to tally new development. With its compact body - only marginally longer and slightly hea vier than the Summicron-M 1:2/50 mm, and with an almost identical diameter ,[...]
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Page 2
LEICA SUPER ELMAR-M 2 1mm f/3.4 ASPH. Engineering drawing 2 T echnical Data Angle of view (diagonal, horizontal, vertical) 4 7° / 40° / 27° (With Leica M8 models: 36° / 30° / 20°) Optical design Number of lenses/groups: 8 / 5 Position of entrance pupil (from ba yonet ang e) : 2 4.4 mm Focus range: 0.7 m t o ∞ Distance setting Scales: Com[...]
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Page 3
LEICA SUPER ELMAR-M 2 1mm f/3.4 ASPH. MTF-graphs The MTF is indicated at full aperture, at f/2,8 and f/5,6 at long taking dis tances (innity). Shown is the contrast in percentage for 5, 10, 20 and 40 lp/mm accross the height of the 35 mm lm format, for tangential (dotted line) and sagittal (solid line) structures, in white light. The 5 and 1 [...]
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Page 4
LEICA SUPER ELMAR-M 2 1mm f/3.4 ASPH. Distortion Distortion is the deviation of the real image height (in the picture) from the ideal image height. The relative distortion is the percentage deviation. The ideal image height results from t he object height and the magnica - tion. The imag e height of 2 1.6 mm is the radial distance between the ed[...]
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Page 5
LEICA SUPER ELMAR-M 2 1mm f/3.4 ASPH. Depthofeldtable 5 Vergrößerung 0,7 0,690 - 0,710 0,686 - 0,714 0,681 - 0,721 0,673 - 0,729 0,662 - 0,743 0,649 - 0,760 0,629 - 0,792 1/11,3 0,8 0,787 - 0,814 0,782 - 0,819 0,774 - 0,828 0,764 - 0,840 0,750 - 0,858 0,733 - 0,882 0,706 - 0,926 1/13,2 1 0,979 - 1,023 0,971 - 1,032 0,958 - 1,046 0,943[...]
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Page 6
LEICA SUPER ELMAR-M 2 1mm f/3.4 ASPH. Blende 4,0 01234567 0,7 0,8 1 1,2 1,5 2 3 5 ∞ Eingestellte Entfernung [m] Schärfentiefe [m] Blende 5,6 012345678 0,7 0,8 1 1,2 1,5 2 3 5 ∞ Eingestellte Entfernung [m] Schärfentiefe [m] Blende 4,0 01234567 0,7 0,8 1 1,2 1,5 2 3 5 ∞ Eingestellte Entfernung [m] Schärfentiefe [m] Blende 5,6 012345678 0,7 0[...]
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Page 7
LEICA SUPER ELMAR-M 2 1mm f/3.4 ASPH. Blende 8,0 0 1 2 3 4 5 6 7 8 9 10 0,7 0,8 1 1,2 1,5 2 3 5 ∞ Eingestellte Entfernung [m] Schärfentiefe [m] Blende 11,0 0 1 2 3 4 5 6 7 8 9 10 0,7 0,8 1 1,2 1,5 2 3 5 ∞ Eingestellte Entfernung [m] Schärfentiefe [m] Aperture Stop 8,0 Depth of Field [m] Distance Setting [m] Blende 8,0 0 1 2 3 4 5 6 7 8 9 10 0[...]
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Page 8
LEICA SUPER ELMAR-M 2 1mm f/3.4 ASPH. Leica Camera AG / Osk ar-Barnack -Straße 1 1 / D-35606 Solms / T elefon +49 (0) 6442-208-0 / T elefax +49 (0) 6442-208-333 www.leica-camera.com / inf o@leica-camera.com Blende 16,0 0 1 2 3 4 5 6 7 8 9 10 0,7 0,8 1 1,2 1,5 2 3 5 ∞ Eingestellte Entfernung [m] Schärfentiefe [m] Aperture Stop 1 6,0 Depth of Fie[...]