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Olympus Zuiko EC-20 2x Teleconverter for Olympus Digital SLR Cameras

Olympus Zuiko EC-20 2x Teleconverter for Olympus Digital SLR Cameras

The EC-20 increased the possibilities of the original Oly lenses on 600mm without the FT equiv. Account (which would then be 1,200) by the 70-300mm or 1:2.8 300mm. The imaging performance here is still acceptable to good. It becomes difficult for relatively low-light lenses. At 70 - 300 we talk about aperture values of 8 or 11.2 as the initial value of 140 and 600mm. Also shifted the focus of the camera but sensitive.
When Oly 50 - 200mm the problem of aperture values is not quite so problematic, but even here one should resort to a tripod.
In the other (WW) zooms e.g. 14 - ... etc., one should rely instead on the converter rather on the appropriate telephoto zoom (eg 50 - 200 or 70-300mm).