Thank you v
ery much for purchasin g a Sigma Le ns. In order to get the
ance and enjoy ment out of your Si gma lens, please
read this instr
uction bookl et thoroughly before you st art to use the
DESCRIPTION OF THE P
Adapter Rin g
Focus Index Line
Focus Mode Sw itch
DC CIRCULAR FISHEYE LENS
The 4.5mm f/2.8
EX DC HSM Circula r Fisheye lens has an angle of
view of 18
0 degrees in all directio ns. When us ed in conjuncti on with
digital SLRs with APS-C s
ize image sensor s, it produces a perf ectly
circular image w
ithin the fram e.
If used with a fil m or full frame digit al SLR camera, the circular
ed will appe ar much smaller w ithin the cent re of the
It is recomm ended that eit her spot or center-weight ed metering is
ttern, Multi-Zone a nd Honeycomb meteri ng may not
It is recomm ended to chec k composition of y our image thro ugh the
viewfinder as t
he extraordinari ly wide angl e of view of this fi sheye
lens may captu
re extremities of the unsusp ecting photogr apher .
TT A CHING TO CAMERA BODY
When this lens i
s attached t o the camera body it will automatically
function in t
he same way as your norm al lens. Please ref er to the
tion bookl et for your camera body .
On the lens mou nt surface, ther e are a number of co uplers and
acts. Please keep them cl ean to ensure prop er
T o avoid damagi ng the lens, be especially sure to
place the len
s with its fr ont end down w hile changing t he lens.
When you t ake a picture, pl ease remov e the lens ca p and the
adapter ring (fi
g.1- ① ) not just t he lens cap, t o avoid vignet ting.
SETTING THE EXPOSURE MODE
The sigma le
ns functio ns automatically after m ounting to your camera.
to the camera in struction book .
This lens feat
ures Sigma’ s built-in Hy per Sonic Motor (HSM). The
quick and qui et autofoc using.
SI G M A AF a n d C AN O N AF 》
For autofocus op
eration, set the fo cus mode switch on th e lens to the
AF ” position (fig.2). If y ou wish to f ocus manually , set th e focus mode
the lens to the “ M ” posit ion. Y ou can a djust the focus by
turning the fo
NIKON A F , PENT AX A F and SONY 》
operation, set t he camera to AF mode an d set the focus
on the lens t o the “ AF” position (fi g.2). If you w ish to
ly , set the focus mod e switch on the l ens to the “ M ”
Y ou can adjust the fo cus by turning t he focus ring.
Please refer to camera ’s instructio n manual for det ails on changing
’s focusing mode.
For Nikon, P entax and Sony mount s, it is only possible to use A F
with camera b
odies which s upport motors driv en by ultraso nic
waves such as HS
M. AF will not function if th e camera body does
not support t
his type of motor .
This lens also permits manual fo cusing even in th e autofocus mode .
With the camera
set to the On e-Shot AF (AF-S ) mode, it is poss ible
to manually ov
erride the auto focus while the s hutter release b utton
sed half way .
When operati ng this lens in ma nual focus mod e, it is recommended
focus be confi rmed visually in the view finder rather th an
relying on the di
stance sca le. This is due to po ssible focus shif t
ng from extreme changes i n temperatu re which cause
ents in the le ns to exp and and contract. S pecial
made for this at t he infinity sett ing.
This lens has a s hort focal lengt h and gives a wide dept h of field
and wide focu
sing area in fr ont of and behin d the subject. For this
reason, the fo
cusing positi on with AF may not match the positi on of
ance Scale on t he camera body .
If the subject is too small, it may not be possible for the camera’ s
AF sensor to fo
cus on it. Please ensur e the subject i s in the AF
PREVENTION OF FLARE
Because of the
extremely w ide angle of view of this le ns, flare and
may occur mu ch more easil y than with ot her lenses. When
you take a p
icture w ith this lens, please p ay special att ention to flare
ng which can occur when shooting n ear or direct ly into the
sun or other v
ery bright li ghts.
ot be mounted on the front of th e lens. If y ou wish to use
se use gelatin ty pe. Please cut t he gelatin filter , using the
accessory as a p attern, and insert the fi lter into the filter
holder at t
he rear of the le ns. (fig.3)
AND STORA GE
Avoid any shocks or exposure t o extreme h igh or low temperatures
or to humidity
For extended sto rage, choose a cool an d dry place, preferably with
on. T o avoid damage to the len s coating, ke ep away
from mothballs o
r naphthalene gas.
Do not use thi nner , benzine or other organi c cleaning ag ents to
t or finger prin ts from the lens elements. Clean by us ing
moistened lens c loth or lens t issue.
This lens is not waterp roof. When you use the lens i n the rain or
, keep i t from gettin g wet. It is often im practical to r epair
the internal mec
hanism, lens element s and electric component s
damaged by water
Sudden te mperature cha nges may ca use conden sation or fog to
appear on t
he surface of the lens. When entering a w arm room
from the cold out
doors, it is advisa ble to keep the lens in the case
until the tem
perature of the l ens approache s room temperature .
struction 9 – 13
Angle of V
Minimum Focusing D
istance 13.5cm (0.44 f t)
a. × Length 76.2 × 77.7mm (3 × 3.06in)
470g (16.6 oz)
Dimensions and weight include the