NiSi 4/15mm User manual

www.nisioptics.com
2020.12 print

Thank you for ordering NiSi's magical first camera lens. The
lens aperture contains 10 straight blades allowing for
sunstars from F4 to F22 and optimal image quality through-
out. This breaks the paradigm of requiring a small aperture
to create a sunstar. We hope that this lens will support your
passion for photography and videography. To fulfil the
imagination of photographers, NiSi began research into
optical accessories from 2005 and has focussed on devel-
oping additional filters for wide angle lenses, camera filters,
filter holders, close up lenses, cinema filters, cinema lenses
and now, camera lenses. We will keep progressing and
challenging ourselves in this field in order to create high
quality and innovative products for photographers.
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Minimum focal distance is 0.2m which creates stunning
visual impact for close up foreground subjects in your
images.
Lens elements are made of optical glass and comprise of
1X double sided aspherical element and 2X extra-low
dispersion elements.
The focus ring handles smoothly allowing comfortable and
accurate adjustments.
NiSi’s hard surface coating technology improves the tough-
ness and waterproofing of elements.
It supports standard 72mm circular filters and 100mm filter
holder systems. This allows you to shoot while experiment-
ing and enjoying the use of filters with ease.
Its all-metal construction gives it durability and safety. The
paint etched logo also showcases the classic feel of cinema
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This is a manual focus lens designed for full frame mirror-
less camera systems. It has optimal image quality and is
also very compact with a streamlined appearance.�
10 straight aperture blades allowing sunstars from F4-F22.�
Precise optical design retaining high image definition from
centre to corners.
Minimal chromatic aberration.
Minimal distortion and vignetting.
Utilises anti-reflection film technology in order to improve
light transmittance and reduce lens flare and stray light.
112° field of view which is wider than the regular angle of
view for a standard 15mm focal length. It is equivalent to
14.5mm focal length.

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lenses.
It is available for mirrorless camera mounts: Sony E/Canon
RF/Nikon Z/Fujifilm X.
Name: NiSi 15mm F4.0 10 straight blade sunstar super
wide angle lens for full frame cameras.
Focal Length: 15mm (full frame), APS-C:22mm
Maximum Aperture: F4
Minimum Aperture: F22
Diaphragm Blades: 10
Angle of View: 112° (APS-C: 78°)
Minimum Focus Distance: 0.2m
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Maximum Magnification: 0.13X
Focus Type: Manual Focus
Filter Thread: 72mm
Lens Elements/Groups:
12 Elements in 10 Groups
1x double side aspherical element
2x extra-low dispersion element
Dimensions (ø x L):75.6mm×80.5mm
Lens Mount: Sony E/Canon RF/Nikon Z/Fujifilm X
Weight: 470g

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Inserting and releasing lens cap
Press the two clips on the sides of the lens cap to insert or
release the lens cap.
Inserting and releasing the lens hood
When inserting the lens hood, align the yellow point of the
lens hood with the yellow marker on the lens and rotate it
clockwise. To remove the lens hood, rotate it anti-clockwise.
The lens hood can also be inserted in an inverted position
which allows for more compact storage and transport.
This lens only utilises manual focus.
Rotate the focus ring slowly to achieve sharp focus.
There is a scale attached to the focus ring which indicates
the depth of field for your selected aperture.
Focus Tips
Insertion and release of rear lens cap
Rotate the rear lens cap anti-clockwise from the camera.
Rotate the rear lens cap clockwise on to the lens.
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Press the release button from the camera and rotate the
lens fully before removing.
Connecting lens to Camera
Take of the rear lens cap and align the yellow marker on the
lens with the marker on the camera lens mount.
Insert the lens into the mount and rotate until you feel and
hear a click which indicates that the lens is locked into the
mount.
How to remove the lens from the camera

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Note: Please read the instruction manual carefully for
correct use and safe storage. We do not take responsibility
for personal injury or damage to the product if these
instructions have not been adhered to.
Safety tip: Do not leave the lens pointed toward the sun
which may damage your eyes and the camera. Insert the lens
cap when the camera is not in use. Due to light reflection,
there is a fire hazard if the glass is left exposed in sunlight.
Tips for sunstars from F4-F22
This lens creates a 10 bladed sunstar even at F4. We
suggest that you use the best aperture that is ideal for your
composition. Too small an aperture will result in a reduction
of image quality.
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Keep the lens away from dust and humid environments.
Avoid direct clashes with other objects.
Use an air blower to clean dust on the lens before using
other cleaning tools.
Transport and storage: Permitted temperature range for
use:-10℃~50℃
Store the lens in a dry cabinet when in high humidity
locations or when unused.

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Do not disassemble, refit or repair the lens by yourself. This
may damage the product. Which is outside of its warran-
ty.Please contact local dealers or NiSi’s official website for
its required maintenance.
Warranty: The warranty period of this product is 24 months
in accordance with EU regulations, 6 months in accordance
with US regulations,12 months in accordance with China
regulations.
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Please contact local dealers
or visit the NiSi official website:https://www.nisioptics.com
NiSi may make changes to specifications at any time without notice.
Condensation may occur on the lens when changing ambient
temperature suddenly.
Keep the lens in its lens bag or sealed in a plastic bag until
the temperature of the lens is close to ambient temperature.
This will result in reduction of frosting, especially when
moving from cold to hot and humid conditions.