LAOWA LW-FF 25mm f/2.8 2.5-5.0X Ultra Macro User manual

使用手册
Instruction Manual
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LAOWA 25mmF2.8
2.5-5X
ULTRA
MACRO

Thank you for purchasing LAOWA LW-FF
25mm f/2.8 2.5-5.0X Ultra Macro Lens.
The lens can shoot extreme close-ups up
to 2.5 - 5.0X and enables photographers
to capture tiny subjects such as small
insects, jewels etc.
PREFACE
Prior to use, please read this instruction manual carefully before to ensure
proper use. Keep the Instruction Manual in hand and refer to it whenever needed.
If you are unable to solve the problem by read the manual, please contact our
after-sales service for technical support.This a macro especially used lens
for close-up photography that does not allow infinity focus structurally.
(Shooting distance range: 173.0-223.8mm)

PERCAUTIONS
FEATURES
Do not disassemble or modify the lens by yourself. If it is damaged
by external force, do not touch any exposed part of the lens.
Do not expose the lens to excessive heat such as direct sunshine or
a parked car as this may deform the glass elements.
When it is not attached to the camera, do not leave the lens under
the sun without the lens cap attached. This is to prevent the lens
from concentrating the sun’s rays, which may cause a fire.
When shooting with the built-in flash of the camera, the lens itself
may block light and cause light fall-off. So external flash can be
recommended in such case.
Safety Precautions
Compact body and ease of use make the lens a perfect match for
macro photography with great stability.
For easy lighting setup, the lens is able to allow extremely long
working distance ranging from 40mm (5X) to 45mm (2.5X)
through special optical design.
Full-metal construction makes the lens feel really solid with great
durability. Multi-layer anti-reflection coating for each glass
element contributes to minimizing flare and ghost.
LAOWA LW-FF 25mmf/2.8 2.5-5.0X is a high-magnification full frame
ultra macro lens that can magnify the subject from 2.5X to 5X.

Maintenance Instructions
NOMENCLATUREPERCAUTIONS
Avoid touching the lens surface. Remove the dust on the lens surface
with a lens cloth or a blower. Keep the lens cap attached because it is
unable to attach UV filter.
Using a circular motion with lens cloth or cloth, gently remove oil,
fingerprints, and grime from the lens surface, working from the
center outward.
If the lens is taken from a cold environment into a warm one,
condensation may develop on the lens surface and internal parts. To
prevent condensation in this case, please take measures to protect
against moisture before moving the lens.
（Canon EF-mount）

NOMENCLATURE
Tripod mount ring ( Optional ）
NOMENCLATURE
Assist lamp（Optional）
To prevent the camera from falling, please hold the camera tightly when removing
the tripod mount ring.
Remove the safety screw on the bottom first and then attach then quick release
plate if needed.
When shooting vertically, turn the camera and lift the knob upwards and then line
up the optical axis with the 90° position index on the tripod mount ring.
Refer the instructions of lens’ front cap to that of this assist lamp.
Please select 5V 2.1A output external power supply.
Due to limited luminance, the lamp is more used for focus assist and it
is recommended that you shoot with a extra flash.

INSTRUCTIONS INSTRUCTIONS
Mounting and Detaching the Lens
Focusing
Choose the corresponding lens mount according to your camera
body, and refer to your camera’s instructions on mounting and
detaching the lens.
Method 1: Magnification Priority
1. Set the magnification first. Turn the focus ring to the required
magnification.
2. Focus the subject roughly. While looking thorough the
viewfinder or using live view, move the camera back or forward
to find the proper focus.
3. Focus the subject finely. Turn the focus ring to get sharp focus.
Method 2: Framing Priority
While looking through the viewfinder or using live view to frame
and focus, turn the focus ring, frame the subject and then follow
steps 2 and 3 above.
Turn the focus ring on the lens to get focus as LAOWA is a MF lens.
There are two ways of focusing, you can give priority to
magnification or to framing.
Focusing Instructions
Limited to close-up shots,it allows a focusing distance range of 173.0mm to
223.8mm and can not focus to infinity.
Gently turn the focus ring to prevent the focus mechanism from damage.
When making high magnification shots, please shoot carefully because you are
so close to the subject under the extremely short working distance.
Magnification refers to the ratio between the subject’s size in reality and
the size of the subject’s projection on the image sensor.
To prevent camera shake, using the tripod, shutter release, mirror lock-up and
silent mode are recommended.
When shooting as method 1 (magnification priority), a focusing rail slider will
make focusing easier.
For high magnification shots, the actual aperture will becomes darker, so
please refer to exposure compensation table to make adjustments accordingly.
To reduce shake when shooting, please use a tripod and a flash.
Manual exposure mode is recommended to obtain accurate exposure.

Depth-of-Field Exposure Compensation Calculation
Magnification and Effective F-number
The aperture displayed by the camera assumes that the focus is set
to infinity（∞）. The actual aperture (effective f-number)
becomes darker (effective f-number increases) at closer focusing
distances (magnification increases). However, for closeup
photography, you can not ignore the change in the effective
f-number and need to increase EV based on the circumstance. [ For
understanding of actual EV, the exposure compensation table and
metering table(continued on the last page) shown below are for
your reference. ]
As macro photography comes with shallow depth-of-field, so you
need to focus carefully to achieve ideal sharpness. Please refer to the
depth-of-field table to understand DOF in advance.
INSTRUCTIONS INSTRUCTIONS

INSTRUCTIONS
Flash
Characterized by shooting exceptionally small subjects, such macro
lens is prone to camera shake, so shooting with a flash is
recommended.
Compared with normal shooting, the proper exposure for macro
photography depends on the subject itself. It is difficult to obtain
correct exposure the first time so please keep practicing.
SPECIFICATIONS
Since diffusion materials may reduce the light of the flash, so selecting a
macro flash with high output is recommended.
As angle, distance and direction are the several key factors to consider in
macro lighting setup, using the flash with long arm and more light unit is
recommended.
Select the flash that is compatible with your camera.

continued from previous page（接上页）
测光表 METERING TABLE 测光表 METERING TABLE