Rokinon 50 mm T1.5 AS UMC Users Manual

50 mm T1.5 AS UMC

Instruction Manual

We believe that this new 50 mm T1.5 AS UMC lens for video recording will give you
a special photographic experience.

The 50 mm T1.5 AS UMC lens forms an optical system based on superior optical
technologies, and maintains excellent resolution both at the center and around the
periphery of the lens by adopting a high performance Glass Molding ASP lens and
an UMC (Ultra Multi Coating).

Advantages of 50 mm T1.5 AS UMC

1. 50 mm T1.5 AS UMC full frame image size.
High-performance glass aspherical lens and Hybrid aspherical lens compensate

2.
the optical aberration optimally.

3. It corrects optical aberrations by utilizing a complex aspherical lens, and
produces a high resolution and high contrast at the center of the lens as well as
at the periphery with a fully open aperture.

4. The flower-shaped hood and UMC (Ultra Multi Coating) design suppresses
flaring and ghost images.

5. Robust durability with a high strength aluminum body.

6. Smooth control when a follow focus is attached since the lens is equipped with
a gear for the focus and aperture.

The 50 mm T1.5 AS UMC for video recording is designed with its own mount.You
can mount the lens directly onto the camera without using an additional adaptor.

※ Please read this instruction manual carefully and use it accordingly.

Please read the 'Safety Precautions' at the back of this instruction manual prior to use.

※

● Please read this instruction manual prior to use. ●

1. Component Names

【Figure】

Nikon Canon

① Mount

④ Range finder

⑦ Hood

② T-number

⑤ Focusing gear

⑧ Depth of focus

indication line

③ Range finder reference line

⑥ Hood locking tube

⑨ Aperture adjustment gear

2. Attaching and Detaching

The 50mm T1.5 AS UMC lens mount is uniquely designed for Nikon (Fujifilm) F,
Pentax (Samsung GX) K, Sony (Minolta), Canon EOS, Four-Thirds, and Samsung
NX compatible cameras.

【Attaching】

Gently hold the lens hood, align the camera mount attachment point with the
attachment reference point or line on the lens, push the lens into the camera
and gently rotate the lens 90 degrees clockwise from the front view, until it
makes a clicking sound.

【Detaching】

Gently hold the lens hood, press the lens release button on the camera, and
turn the lens counterclockwise to detach the lens.

3. Focus Adjustment

When using the 50 mm T1.5 AS UMC lens, you can set the focus of a subject by
turning the focus adjustment gear, since it is an MF (Manual Focus) adjustment lens.

【Nikon Mount】

① To change the focus from a subject that is far away to a subject that is

closeTurn the focusing gear counterclockwise (from ∞ to 0.45) and focus
on the clearest subject by using the indicator signal on the camera or by
checking visually.

② To change the focus from a subject that is close to a subject that is far

awayTurn the focusing gear clockwise (from 0.45 to ∞) and focus on the
clearest subject using the indicator signal on the camera or by checking
visually.

【Sony α / Sony E / Canon / Four Thirds / Samsung NX Mount】

① To change the focus from a subject that is far away to a subject that is

closeTurn the focusing gear clockwise (from ∞ to 0.45) and focus on the
clearest subject by checking visually.

② To change the focus from a subject that is close to a subject that is far

awayTurn the focusing gear counterclockwise (from 0.45 to ∞) and focus
on the clearest subject by checking visually.

4. Brightness Control

You can set the brightness you want by turning the aperture adjustment gear when
using the 50 mm T1.5 AS UMC lens.

You can set T NO from 1.5 to 22.(The aperture is not positioned at any exact point,
since it is adjustable continuously.)

5. Mounting the Hood

The hood has a bayonet system which guarantees speedy, efficient, safe and
precise installation, and enables you to enjoy shooting that is free from ghosting or
flaring.

[Figure]

Align the attachment reference point on the hood with the reference point for a hood
on the lens, push the hood onto the lens and turn the hood clockwise until it makes
a clicking sound.

6. Camera Settings

Some cameras require special settings when using this lens.

Canon Mount

1) Record a video in Av, Tv, P, CA, □ or M mode.

2) Please note that while recording a video the shutter speed is limited to a
minimum of 1/30.

(The procedures above are for the 5D MARK ▍▌ . The settings for the camera or the menu
may vary based on the camera model or due to a functional upgrade. Refer to the camera
manual or contact the camera manufacturer for detailed information.)

Nikon Mount

Please refer to the following and set the camera when necessary.

1) Record a video in M or A mode.

2) Adjust the exposure using the dial steps +5 to -5.

(The procedures above are for the D7000. The settings for the camera or the menu may
vary based on the camera model or due to a functional upgrade. Refer to the camera
manual or contact the camera manufacturer for detailed information.)

Pentax K Mount

1) Record a video in [icon] mode.

2) Please note that while recording a video the shutter speed is limited to a
minimum of 1/30.

(The procedures above are for the K-30. The settings for the camera or the menu may vary
based on the camera model or due to a functional upgrade. Refer to the camera manual or
contact the camera manufacturer for detailed information.)

Sony α Mount

1) Record a video in A, S, P or M mode.

(The procedures above are for the A580. The settings for the camera or the menu may vary
based on the camera model or due to a functional upgrade. Refer to the camera manual or
contact the camera manufacturer for detailed information.)

Canon M Mount

1) Record a video in Av, Tv, P, CA or M mode.

2) Please note that while recording a video the shutter speed is limited to a minimum
of 1/30.

(The procedures above are for the Canon M. The settings for the camera or the menu may
vary based on the camera model or due to a functional upgrade. Refer to the camera
manual or contact the camera manufacturer for detailed information.)

Fujifilm X Mount

1) Record a video in [icon] mode.

(The procedures above are for the X-Pro1. The settings for the camera or the menu may
vary based on the camera model or due to a functional upgrade. Refer to the camera
manual or contact the camera manufacturer for detailed information.)

Sony E Mount

1) Record a video in A, S, P or M mode.

2) Adjust the exposure by rotating the dial at the back of the camera.

(The procedures above are for the NEX-5. The settings for the camera or the menu may vary
based on the camera model or due to a functional upgrade. Refer to the camera manual or
contact the camera manufacturer for detailed information.)

Samsung NX Mount

1) Record a video in A, M, or [icon] mode.

2) Please note that while recording a video the shutter speed is limited to a
minimum of 1/30.

(The procedures above are for the NX-200. The settings for the camera or the menu may
vary based on the camera model or due to a functional upgrade. Refer to the camera
manual or contact the camera manufacturer for detailed information.)

Four Thirds FT Mount

1) Record a video in [icon], P, A, or M mode.

2) Please note that while recording a video the shutter speed is limited to a
minimum of 1/30.

(The procedures above are for the E-5. The settings for the camera or the menu may vary
based on the camera model or due to a functional upgrade. Refer to the camera manual or
contact the camera manufacturer for detailed information.)

Micro Four Thirds Mount

1) Record a video in [icon], P, A, or M mode.

2) Please note that while recording a video the shutter speed is limited to a
minimum of 1/30.

(The procedures above are for the E-5. The settings for the camera or the menu may vary
based on the camera model or due to a functional upgrade. Refer to the camera manual or
contact the camera manufacturer for detailed information.)

7. SPEC

SPECIFICATIONS

APERTURE RANGE
(T-STOP) (Brightness)

OPTICAL CONSTURCTION

MINIMUM FOCUSING
DISTANCE

FILTER SIZE

MAXIMUM DIAMETER

MOUNT

35mm

ANGLE OF
VIEW

LENGTH
(LENS MOUNT TO FRONT)

WEIGHT
(CAP, HOOD DETACHABLE)

GEAR

APS-C

FOUR-

THIRD 4/3''

MODULE

A

B

C

D

FOCUS DIAMETER

APERTURE DIAMETER

T1.5 50mm AS UMC

T1.5 to T22

9 ELEMENTS IN 6 GROUPS (1 ASPHERICAL & 1 HYBRID LENS)

0.45m (1.47 ft)

∅ 77.0mm

∅ 81.6mm

PENTAX

CANON

NICON

EOS

46.2°

46.2°

30.8°

29.0°

72.2mm 74.7mm 73.2 mm 74.2mm

555g 575g 545g 565g 635g 640g 590g 600g 580g 590g

8mm 10.5mm 9mm 10mm 36.4mm 36.8mm 29mm 36.5mm 15.8mm 35.3mm

∅70.4mm

SONY

K

α

46.2°

46.2°

30.8°

30.8° 29.0° 30.8° 30.8° 30.8°

FUJIFILM

CANON

X

M

100.6mm 101.0mm

0.8

7 mm

4 mm

43.8 mm

∅ 81.6mm

∅ 73.6mm

SONY

SAMSUNG

E

NX

93.2mm 100.7mm 80.0mm 99.5mm

FOUR

-THIRDS

MICRO

FOUR

-THIRDS

23.6°23.6°

8. Troubleshooting

Issue Causes Action

The lens cannot be
attached to the camera.

A lens cannot be detached
from the camera.

Blurry images

Automatic focusing does
not work properly.

The pictures are too dark
or too bright.

The camera flash is not
synchronized to the
camera.

There is no camera finder
indication or display.

Zoom failure.

This lens cannot be
mounted on other
cameras.

You want to attach our 2X
or 1.4X converter lens.

The attachment reference point on
the lens is not aligned with the
lens attachment reference point
on the camera.

Incorrect rotation direction for
detaching the lens.If you turn the
lens while holding the camera, it
may cause damage to the lens.

Incorrect focusingInsufficient
shutter speed or camera shake.

This is a manual focusing lens
and does not have an automatic
function.

The exposure is incorrect.

The manual focusing lens may not
be compatible depending on the
camera.

This lens does not have electronic
contacts, so there is no electronic
communication with the camera.

This lens is a short focus lens.

This lens is designed for a
specific mount type.

Our converter is designed for the T
(M42 SCREW) mount only, thus it
cannot be used with this product.

Align the attachment reference point
on the lens with the lens attachment
reference point on the camera.

Press the lens release button on the
camera, and gently turn the lens to
the lens attaching/detaching
reference points, in the direction as
marked on the camera, and then pull
the lens forward.

Turn the focusing ring while checking
the subject using the indicator in the
camera or checking visually to set the
focus until the subject is clear and
distinct, and then press the
shutter.After selecting a shutter speed
of 1/125 sec or faster, steady the
camera and take a photograph.

Turn the focusing gear to focus on a
subject.

Set the aperture adjustment gear of
the lens correctly.

See the camera manual.

No problem with shooting.

Purchase the designated lens mount.

You can use each company's own
mount converter.However, be aware
that auto focusing will not be available.

9. Safety Precautions

The following precautions are divided into two
types according to the level of danger.

Warning Caution

If this instruction is not
followed, it may cause death
or severe injury to the user.

Warning

Don't look at the sun through the
lens.It may cause blindness.

Keep the lens out of
children's reach. It may drop

or fall down, causing injury.

If this instruction is not followed,
it may cause damage or injury
to the user.

Caution

Attach the lens to the camera
correctly and make sure that

the lens is attached firmly.
If the lens is not attached correctly, it
may not be pulled out or it may fall
down, causing injury.

Do not modify or alter the

lens.It may lead to failure of the
camera. Modified or altered lenses
may not be repaired.

The following pictograms are used in the below precautions:

Requires caution. Inside the pictogram it shows contents of
precautions. (The pictogram on the left shows the caution for ignition.

Shows prohibition. Inside the pictogram it shows contents of prohibition.
(The pictogram on the left shows the prohibition of disassembly.

Shows instruction. Inside the pictogram it shows contents of instructions.
(It shows instruction of precaution in the pictogram on the left.)

Do not apply excessive weight
on the lens attached to the
camera. It may cause damage

to the lens and camera mounts.
Be sure to hold the lens when
operating or moving.

Don't leave the lens in direct
sunlight. It may cause a fire,
depending on lenses that
concentrate light on a close
object.

Ensure that the camera
operates properly by checking

he lens beforehand or by test

t
shooting for important events such as
a wedding ceremony and an overseas
trip.

Don't look at the sun directly

through a camera with a lens
attached. It may cause damage to
one's eyesight.

WARNING!

Do not allow this product to get wet, or expose it to a moist environment.
It may cause a fire or electric shock.

CAUTION!

Don't use this product or store it close to devices that generate heat i.e.,
heaters, thermal regulators, stoves, stereo amplifiers.
Do not expose the lens to drastic temperature changes.
Do not touch the surface of the lens with your hand, or let it come into
contact with sharp objects.
Do not drop the lens.
Do not soak the lens in water, and avoid water splashing onto the lens.
If there are foreign bodies on the lens, use a lens cleaning kit only.