Zeiss Ikon Pro-Tessar M 1:1 Lens Post Instructions
- June 10, 2024
- ZEISS IKON
Table of Contents
Zeiss Ikon Pro-Tessar M 1:1 Lens Post
The Pro-Tessar M 1:1 lens is a high-quality lens designed for use with the CONTAFLEX camera. The lens component can be easily removed and reinserted for cleaning and maintenance purposes.
Product Usage Instructions
- To remove the lens component, turn the right-hand lock ring until it stops and lift the front element from its mount.
- When reinserting, align the red dot of the Pro-Tessar M 1:1 or original front element with the red dot of the lock pawl. Insert and press the lens component into place with a right turn until an audible click indicates the correct position.
- Do not touch the surfaces of the precious lenses to preserve their efficiency and high-quality performance.
- To take a picture, set the Pro-Tessar to the infinity mark and move the camera toward the subject until one of the vertical lines of the subject appears unbroken in the split-image rangefinder or fine-grain screen ring.
- Release the shutter after ensuring that the definition of small details in the fine-grain screen ring is ensured. It is advisable to stop down the lens to at least f/8.
- For copying negatives or positives, use the CONTAFLEX with the Pro-Tessar M 1:1 in conjunction with a Zeiss Ikon copying unit. Place the original on an illuminated box, cover the illuminated area, and release the shutter with a cable release.
- The Pro-Tessar can be used with filters and a lens hood. Filters in 27 mm screw-in mount are screwed into the lens mount, and the lens hood must be slipped on.
- The depth of field is very small due to the taking distance being short. The depth of field can be measured from the image plane towards the front and back.
- Clean the lenses only when necessary by gently wiping them with a dry(washed leather), after removing any dust with a soft brush.
- Every Pro-Tessar M 1:1 lens bears a serial number. It is advised to make a careful note of the numbers of all lenses for ownership purposes.
For any difficulties concerning photography, seek free information from your photo dealer. The product is subject to changes in the interest of technical progress.
Instructions
With the Pro-lessar M 1 :1, which should replace the front element of the convertible Zeiss Tessar fl2.a,50 mm, an image scale of 1:1 is automatically obtained so that it is possible to make transparencies from negatives, blackand- white negatives from colour transparencies, duplicates, etc. by optical printing. This is much easier than direct ‘contact printing, which calls for a darkroom arid a special printing device. The lens can also be used for taking the right hand until it comes to a stop; a slight resistance has to be overcome. Then lift the front element from its mount.
When re-inserting, the red dot of the Pro-Tessar M 1:1 or of the original front element must be opposite the red dot of the lock pawl. The lens component is inserted and pressed home with a right turn until an audible click indicates the correct position. In order to preserve the efficiency and high-quality ‘performance of the right hand until it comes to a stop; a slight resistance has to be overcome. Then lift the front element from its mount.
When re-inserting, the red dot of the Pro-Tessar M 1:1 or of the original front element must be opposite the red dot of the lock pawl. The lens component is inserted and pressed home with a right turn until an audible click indicates the correct position. In order to preserve the efficiency and high-quality performance of the precious lenses, their surfaces should never be touched. The denotations on the Pro-Tessar are engraved in red so that it cannot be mixed up with the original front element of the Tessar lens.
For taking a picture
The Pro-Tessar should be set to the “infinity” mark and the camera then moved toward the subject until one of the vertical lines of the subject appears unbroken in the split-image rangefinder or the definition of small details in the fine-grain screen ring is ensured. Then the shutter can be released. It is advisable to stop down the lens to at least f /8. If the distance scale of the lens is set to 0.7 m (27′ /. in.) the image scale will be 1.15 :1, that is to say, that a slight magnification will be obtained. This can be used for the correction of the framing in transparencies or duplicates. For copying negatives or positives it is advisable to use the CONTAFLEX with the Pro- Tessar M 1:1 in conjunction with a Zeiss Ikon copying unit. The original should then be placed on an illuminated- box, the illuminated area of which must be covered so that only the original is illuminated.
The shutter should be released by means of a cable release. The ProTessar can be used with filters and the lens hood. Filters in 27 mm screw-in mount are screwed into the lens mount; the lens hood must be slipped on. It is also possible to use the Control in conjunction with the Pro-Tessar M 1 :1.
Depth of field
Since the taking distance is always very short, the depth of field is equally small, Measured from the image plane towards the front and the back, the depth of field is:
- (circle of confusion 1120 mm).
Maintenance of the lenses
All lenses should only be cleaned when really necessary. Gently wipe the lens with a soft, well-washed dry piece of linen (but not chamois leather I), after removing any dust with a soft brush.
Serial numbers
Every Pro-Tessar M 1 :1 lens bears a serial ‘number. You ‘are advised to make a careful note of the numbers of all lenses, as they may be of great help in establishing ownership in cases of loss or theft.
Advice in photography
If you have difficulties concerning photography, see your photo dealer for free information. Subject to changes in the interest of technical progress.
Zeiss Ikon AG. StuUgart
Printed in Germany
Author: J. Kraatz 1.5 0559