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Nomenclature
Focus stop buttons (x4)
Zoom ring
Mounting index
Rear cap
Focus limit switch
Strap mount
Focus ring
Hood mount
Filter mount thread
Electrical contacts
Tr ipod mount
Lens hood
Contents
Features
• The ED90-250mm f2.8 is a lens with high imaging capability, designed exclusively for use with
Olympus FOUR THIRDS single-lens-reflex digital cameras.
• Dustproof and drip-proof construction.
• Telephoto zoom lens equivalent to a 180–500 mm lens on a 35 mm film camera.
• High-image-quality, 12-group, 17-element F2.8 lens system that includes three ED elements (Ex-
tra-low Dispersion glass lenses).
• Can be used in combination with the optional EC-14 teleconverter.
• Can be used in combination with the optional EX-25 extension tube under the following conditions:
• Features ....................................................................................................................................... 12
• Checking the Package Contents .................................................................................................. 13
• Nomenclature .............................................................................................................................. 13
• Attaching the Lens Strap ............................................................................................................. 14
• Attaching the Lens Case Strap .................................................................................................... 14
• Using the Protection Filter ........................................................................................................... 14
• Attaching Lens Hood LH-120B .................................................................................................... 15
• How to Turn the Camera .............................................................................................................. 15
• Focus Limit Switch ....................................................................................................................... 16
• Focus Stop Buttons ..................................................................................................................... 16
• Shooting Cautions ....................................................................................................................... 16
• Attaching Lens Cap LC-140 ......................................................................................................... 16
• Precautions: Be Sure to Read the Following ............................................................................... 17
• Main Specifications ...................................................................................................................... 18
For customers in Europe
The “CE” mark indicates that this product complies with the European requirements for safety, health,
environment and customer protection. CE-mark products are for sale in Europe.
For customers in USA
FCC Notice
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device
may not cause harmful interference, and (2) this device must accept any interference received, including interference
that may cause undesired operation.
Any unauthorized changes or modifications to this equipment would void the user’s authority to operate.
For customers in CANADA
This Class B digital apparatus complies with Canadian ICES-003.
This lens cannot be used in combination with the Olympus Macro Flash System.
Checking the Package Contents
Lens body Lens Hood LH-120B Lens Case LSH-1738
47.7 cm – 53.5 cm
(1.59 ft – 1.78 ft)
90 mm
150 mm
250 mm
69.9 cm – 103.7 cm
(2.33 ft – 3.45 ft)
Focal Distance
Shooting Range
107.1 cm – 264.3 cm
(3.57 ft – 8.81 ft)
0.28x – 0.32x
(0.56x – 0.64x)
0.17x – 0.24x
(0.34x - 0.48x)
Magnification
(Equivalent 35mm values are shown in parentheses)
0.10x – 0.21x
(0.20x - 0.42x)
Lens Cap LC-140 Lens Strap Protection filter