malimexPro 800/8,0 T2 User manual

1
Copy of Instruction Manual
800/8,0 Tele Mirror Lens T2
Gewerbering 26
86666 Burgheim
Tel. +49 84 32 / 9489-0
Fax. +49 84 32 / 9489 - 8333
eMail: [email protected]
www.foto-walser.de

2
Content
0. ...........................................................................................................................................Introduction 3
1. ................................................................................................................................Mounting your lens 3
2. ....................................................................................................................................Focusing the lens 3
3. ..................................................................................................................... Light and contrast control 3
4. ......................................................................................................................................................Filters 4
5. ......................................................................................... Exposure or adjustment with TTL- cameras 4
6. ..................................................................................................................Camera without TTL-system 5
6.1 ......................................................................................Filter utilization chart (Exposure adjustment) 5
7. .........................................................................................................................................Depth of field 5
8. ....................................................................................................................Cleaning and maintenance 6
9................................................................................................................................ Fault settings 6
10...............................................................................................................Technical specifications 7
11.....................................................................................................................Included in delivery 7

3
Your new catadioptric lens or Reflex Mirror lens is a highly developed computer designed product, using
the merits of both reflex optics and refraction optics. This gives you very sharp picture quality with less
color aberration, which is considered the most harmful factor in the field of telephoto photography.
Each lens comes with interchangeable rear insert filters. Optional filters are exclusively designed for the
Reflex Mirror lenses.
1. Mounting your lens
Your Lens utilizes a universal mounting ring (T2) which allows your lens to fit practically
all SLR cameras manufactured since 1960. Simply attach the specific T2 adapter for your
style camera to the actual lens and then mount to your camera body in the same way as
your existing lens, which your camera is equipped. Also remove your lens the same way
as your existing lens and consult your camera introduction manual for further details.
After mounting your T2 adapter to the lens, you may have to adjust the T-mounts so that
the top of the lens faces upward. If this is necessary, loosen the 3 small screws located
on the T-mounts and turn the lens until it is in the proper usable position. Make sure to
retighten the 3 screws after you make the adjustments.
2. Focusing the lens
Focusing is accomplished while viewing the subject through the viewfinder of your camera and
rotating the focusing ring. Since the aperture is preset, you will find under certain light conditions
a shadow appearance on the split-image section of your focusing screen. In this case, simply
focus on the edges of your subject with the outer center of your fresnel prism.
NOTE: In order to compensate focusing when normal focusing position may differ due to extreme
temperature change, the focusing ring has been designed to allow rotation beyond tile
fixed engraved marks of the distance scale. To avoid errors, focusing should always be
made while looking through the viewfinder.
NOTE: No adjustment of focusing is necessary when taking infrared photography, as is required
with normal lenses.
3. Light and contrast control
Since the reflex lens is not equipped with a diaphragm system, the use of filters plays an
important factor in the control of light and contrast.

4
4. Filters
Normal (IA Skylight): This filter should be used whenever no other filter is necessary.
ND 2X and ND 4X (Neutral Density): These filters control the light passage since no diaphragm
system is provided in the reflex lens. Exposure factor is 4
times with a ND4X, i.e., the light in-take through the lens is
decreased similarly as it, stopping-down a normal lens with
an aperture, by 2 stops.
NOTE: ND filters reduce light passage only, and the depth of field cannot be changed.
Y52 (Yellow): This filter is used when taking black and white pictures. It makes a blue
background darker. Quite effective when taking shots of clouds on a blue
horizon.
056 (Orange): This filter makes blue or green color lines darker and yellow or red color lines
lighter than seen with the human eye. Quite effective when stronger contrast
is desired.
R60 (Red): Used to express day-time scenery as a night scene, or emphasis and strengthen
contrast exceptionally. Also necessary when taking infrared black and white
exposures.
NOTE : In case the subject to be taken indicates too much light or overexposure as indicated
by an exposure meter reading, or LED warning signal of the camera, adjustment of
the light in-take is controlled by using one of the ND filters. When using a R60 filter
with an aperture preferred camera, an aperture adjustment to the camera between
+0.5 to +1.0 is required.
5. Exposure or aperture adjustment with TTL- cameras
Since tile aperture of the reflex lens cannot be changed, the exposure is controlled entirely
upon the shutter-speed being used. The shutter speed is set according to your TTL reading.
Both aperture and shutter priority automatic cameras will automatically set the right speed
with its auto exposure mechanism, except a few models, on which it is necessary to operate
on a manual function.
In aperture priority or manual operation of a camera, appropriate shutter speed must be
adjusted using 3 neutral density filter in case of overexposure readings or the camera's LED
warning light is activated.
If your camera is a manual TTL system, then simply follow the exposure indicator in the
viewfinder by compensating with the shutter speed. In case of excessive light beyond the
shutter speed capability, attach a Neutral Density filter to reduce the overall light passage.

5
6. Camera without TTL- system
When using a camera without a TTL system and filters, except of the normal filter, the
exposure must be stopped down as indicated in the following table to the shutter speed
indicated by a exposure meter reading, i.e., with the 300mm F5.6 Reflex lens, the setting
would be F5.6. If a Y52 filter under daylight conditions is used, the stop-down would be 1.
That is, if the appropriate shutter speed is metered as 1/1000 seconds using a single
exposure meter with a f stop of 5.6, then, the shutter speed setting must be 1/500 seconds.
6.1 Filter utilization chart (Exposure Adjustment)
Under
Daylight
Under
Tungstenlight
Kind of
Filter
Color
Exposure
Shutter
Stop-down
Exposure
Shutter
Stop-down
Normal
Clear
1
No
adjustment
1
No
adjustment
Y52
Yellow
2
1
1,5
1/2“
056
Orange
2
1
1,5
1/2“
R60
Red
6
2
4
2
ND2X
Grey
2
1
2
1
ND4X
Grey
4
2
4
2
ND6X
Grey
8
3
8
3
NOTE: If a 1/2 shutter speed adjustment is indicated, generally to negative film, a full one
stop should be taken. When a reversal film is being used, disregard the half-stop
setting and use a normal shutter speed.
7. Depth of field
The area in acceptable sharpness in front of and behind the subject in focus is called Depth
of Field. The aperture selected and the distance of the subject as well as the focal length of a
lens determines such Depth of Field.
Because of the longer focal length of your Reflex lens the depth of field is acutely narrow, for
example, with a 500mm F6.3 lens, at a distance of 6 feet, the depth of field is only 1/2 inch
wide. Therefore, it is recommended to first practice focusing with your lens before taking
any serious pictures, especially in close-up photography. lt is suggested that a focus
magnifier be used to help determining the depth of field sharpness under such extreme
conditions.

6
8. Cleaning and maintenance
The lens should always be capped when not in use. Like other precision optics, it should never
be simply wiped with a tissue since this may abrade the surface with any dust clinging to it or
on the lens.
Any accumulated dust should occasionally be blown off with a syringe or available blower
brush designed for this purpose. To remove fingerprints or smears, shred the edge of a lens
tissue and roll it to make a swab: dampen it with a lens cleaner specially made for
photographic optics and gently wipe the surface without exercising any pressure. Repeat the
procedure if necessary using a new swab. To clean, start at the center of the lens, using a
circular motion and working to the edge of the lens for best results.
When the lens is not in use, it should be stored in a cool dry place, however, if this is not
possible, a leather case with a silicate gel packet will afford the same protection as an
aluminum case with polyfoam liner.#
9. Fault finding
Phenomena
Causes
Measures
A lens can´t be
attached to the
camera
The lens ring mount and
the camera mount are
not aligned.
Align the lens ring mount and
the camera mount.
A lens can´t be
detached from the
camera
Incorrect rotation
direction for detaching.
If the user turns the lens
while holding the
camera, it may cause
damage to the lens.
Press the lens release button on
the camera, and lightly turn the
lens to the lens attaching and
detaching reference points, in
the direction as marked on the
camera and then pull the lens
forward.
Dark Image
Incorrect focusing.
Insufficient shutter
speed or camera shake
Turn the focus ring while
checking the indication or
checking an object visually, set
the focus until it reaches a clear
point and then press the
shutter. Steady the camera and
take a photograph at a shutter
speed of 1/125 sec.
Autofocus failure
Autofocus failed with
manual control focus
lens
Set focus by turning the focus
ring.
Dark or too bright
pictures
Inappropriate exposure
Adjust the aperture size by
turning the lens or adjust the
shutter speed

7
10. Technical specifications
Lens speed
F8.0
Lens group/Lenses
8/8
Image angle
3°
Closest focusing distance
3,5m
Bayonet diameter
30,5mm
Front diameter
111mm
Overall length
approx. 130mm
Weight
approx. 946g
11. Included in delivery
1 x Lens
1 x Lens cap
1 x Lens bag