Olympus OM-D

Olympus a finalement annoncé cet appareil très curieux qu’est l’Olympus OM-D.

Ne vous y trompez pas, ce n’est pas un bon vieux reflex numérique APS-C. C’est plutôt un appareil surprenant qui à la croisée de plusieurs chemins, qui fait se rencontrer plusieurs mondes.

• L’Olympus OM-D reprend l’idée de la taille des Olympus OM des années 80 qui se caractérisaient par une petite taille (pour l’époque). Mais il ne reprend pas les objectifs de la vieille (mais belle) gamme OM.
• Il est sensible : 200-25600 ISO sur un capteur à 16,9 MP
• C’est un PEN (un appareil photo à capteur micro-4/3, soit un peu plus petit qu’un capteur APS-C plus tradiitonnel)
• C’est un appareil rapide et nerveux : 60 – 1/4000 sec et jusqu’à 9 images/s
• Il est tropicalisé et solide

Il n’y a que deux problèmes : Est-ce que la santé financière d’Olympus lui portera préjudice ? Et le prix de 1100€ (pour le modèle EM5 présenté) ne sera-t-il pas trop élevé ?

Je sais que les appareils semblent être toujours plus chers, mais un petit bijou à ce prix, ça laisse des traces sur le talon du chéquier ou la facturette de la carte bleue…

Press Release

Olympus Imaging has today launched the much anticipated new OM-D (OM Digital Compact System Camera) series, with the announcement of its inaugural E-M5 model. Featuring an integrated 1.44 megapixel electronic viewfinder and 16 megapixel LiveMOS image sensor, it is the world’s fastest auto-focusing camera and is equipped with the world’s first five-axis image stabiliser integrated into its weather-proof alloy body.

The OM-D series heralds a new technological epoch in interchangeable lens digital cameras, as conventional digital SLR camera designs come to an evolutionary end in user experience and portability. With its high-resolution electronic viewfinder (EVF) and real-time digital interface, the Olympus E-M5 immerses the photographer fully into the creative process through a genuine WYSIWYG experience. Exposure, colour and filter effects are seen live, not after the picture has been taken.

Using FAST-AF (Frequency Accelerated Sensor Technology Auto Focus), that combines the high drive speed of the new LiveMos sensor, the latest MSC (Movie & Stills Compatible) lens technology, and a very short release lag, the E-M5 is the world’s fastest* autofocusing camera. 3D subject tracking is a new feature in continuous AF mode for enhanced focusing accuracy of moving subjects.

Olympus has also developed world’s first five-axis image stabilisation (IS) system. In addition to the standard two-axis camera pitch/yaw movement detection and compensation, the system in the E-M5 is also capable of detecting vertical and horizontal translational movement, and roll along the lens axis. IS compensation is effective up to a maximum of -5 EV. With a newly designed mechanism for shifting the sensor, the effects of IS can be seen live through the electronic viewfinder in both still shooting and recording video.

For maximum convenience, an eye-level sensor automatically switches Live View between the rear OLED touch-sensitive screen and the EVF when the camera is lifted to eye-level for shooting. This new tilting 3″ OLED capacitative touch-screen enables tap-shooting with focus point selection, and image playback control.

The new 16 megapixel LiveMOS sensor with a maximum 240fps frame rate captures broadcast quality Full HD video. A newly designed video processing algorithm provides superb video quality with significantly reduced aliasing. Undesirable rolling-shutter effects are now reduced to negligible levels.

Designed as a creative tool that you can take with you everywhere, even in inclement conditions, the E-M5 is both splash and dustproof**, and features a light yet robust magnesium alloy chassis.

Other Features

• New EVF Creative Control function provides live interactive highlight and shadow adjustment and white balance control
• Ergonomic twin input control dials
• Bundled with clip-on FL-LM2 weatherproof flash
• Wireless flash control (when the bundled FL-LM2 or the new FL-600R strobe unit, is attached)
• Shutter speed range 60-1/4000th seconds including Bulb
• 120fps maximum EVF display rate in still shooting with 29ms display lag enables sequential shooting display with minimal viewfinder delay (default frame rate is 60fps, adjustable to 120fps). Video refresh during video recording is as fast as 240fps, reducing the rolling shutter effect entirely.
• New Li-ion battery BLN-1 and new charger BCN-1

*As of Feb 2012 based on Olympus in-house tests; when the M.Zuiko Digital 12-50mm lens is used

**Camera becomes fully environment-proof when used with the M.Zuiko Digital 12-50mm lens

NEW SYSTEM ACCESSORIES

HLD-6 battery grip kit

HLD-6 kit comprise of HLD-G and HLD-P. It provides for both vertical and horizontal camera holding, or just vertical if the top half (HLD-G) is used without the battery pack grip (HLD-P). A total of two BLN-1 batteries – one in the camera body, one in the grip can be used together. Features weather-sealing.

FL-600R Flash Strobe

The new FL-600R flash strobe has a maximum guide number of 50 (ISO200) and can work either as a wireless commander or slave strobe with both E-M5 and PEN models. The flash head tilts down 7 degrees and up 90 degrees, with 180 degrees rotation on either side. It uses 4 AA batteries for fast recycling, has a built-in wide diffuser panel for a 16mm equivalent coverage, and a small pull-out reflector plate to create catch-lights in portraits. For video recording, it has a built-in 1W LED.

Underwater Case PT-E08

Works to a depth of 45 meters. This new housing uses a waterproof lens port that is bayonet-mounted and replaceable. The standard underwater lens port accepts the M.ZUIKO DIGITAL 14-42mm f3.5-5.6 II, M.ZUIKO DIGITAL 14-42mm f3.5-5.6 IIR and M.ZUIKO DIGITAL ED 9-18mm f4.0-5.6 lenses. When an optional port adapter is used, an underwater lens port compliant with the Four Thirds System standard can be attached on it. This design is expected to make the two lenses, the ZUIKO DIGITAL ED 8mm f3.5 Fisheye and ZUIKO DIGITAL ED 50mm f2.0 Macro, usable with the underwater case.

As the FL-LM2 flash provided as standard with the OLYMPUS OM-D incorporates the wireless flash control function, it can also control the UFL-2 Underwater Flash.

TECHNOLOGY ADDENDUM

1. High-performance Electronic Viewfinder with Creative Control interface

• Bright and Clear from edge to edge
• Large exit pupil to keep nice visibility even when eye position is shifted
• 100% field of view
• Maximum magnification ratio: x1.15
• Eyepoint: 18 mm
• Dioptre adjustment: -4 to +2m-1
• Optional large eye cup

The E-M5’s integrated electronic viewfinder with 1.44 megapixel resolution not only provides an extremely clear view courtesy of Olympus high-performance all-aspherical viewfinder optics, it provides real-time feedback of exposure and settings with a WYSIWYG experience in picture making and movie recording. Elements of the new Creative Control interface can be superimposed onto the live picture to assist intuitive interactivity. An example shown below is the new highlight and shadow curve adjustment feature.

Aspects of Creative Control visible through the EVF include: Highlight-Shadow, White Balance, Picture Aspect and View Magnification

2. World’s first 5 axis image-stabilisation

Current 2-Axis Image Stabilization New 5-Axis Image Stabilization

Most contemporary IS systems whether integrated into camera body or lens-based are only able to detect movements in a 2-axis orientation – pitch and yaw. A world’s first 5-axis system has been developed for the OM-D series that provides comprehensive stabilisation for almost all forms of camera shake possible including horizontal and vertical translational movements, as well as roll movement around the lens axis. Overall IS performance is significantly better than two or three axis IS systems. This new stabilisation system is capable of up to -5 EV of image stabilisation. Handheld macro photography is a big beneficiary of this new IS system, as would long-lens or low-light shooting situations.

This new MSC (Movie & Still Compatible) IS unit incorporates Olympus’ pioneering SSWF (Supersonic Wave Filter) dust reduction system for dust-free photography. A new IS drive mechanism enables the effect of stabilisation to be viewed in real-time through the EVF. Like all Olympus PEN and DSLR cameras with built-in IS, image stabilisation can even be extended to OM legacy lenses that are non-electronically coupled, via manual focal length input.

3. Advantages of Contrast Detection Vs Conventional SLR Phase Detection in low-light AF performance

Contrary to popular belief, conventional phase detection (PD) AF systems found in the majority of available DSLRs are actually technology limited in low-light focusing situations and hence provide much lower AF performance even if a large aperture lens (e.g., f1.4) is used, when compared to contrast (CD) AF type systems. Most conventional phase detection systems can only make use of light flux equivalent to f5.6 or 10 degrees by default, even when a taking lens of larger than f5.6 aperture is used. This weakness is inherent in the actual working principle of most PD AF systems in use today as shown in the diagram below.

Contrast Detect AF systems on the other hand benefit make full use of the corresponding increase in the amount of light with larger aperture lenses for better AF accuracy in low-light photographic situations.

4. Dust and Splash-proof alloy body

The E-M5 body uses a comprehensive weather-proofing system. When used with the M.Zuiko Digital 12-50mm lens which is also dust and splashproof, the camera system is fully sealed against the elements. The accessory FL-LM2 flash, as well as the HLD-6 battery grip kit are also weather-sealed.

For maximum chassis strength, a special high-precision casting process akin to injection moulding is used to create the rugged magnesium alloy chassis that protects the sophisticated electronics and mechanics.