Olympus Zuiko 70-300mm f/4.0-5.6 ED Lens – Review

Olympus Zuiko 70-300mm f/4.0-5.6 ED Lens for Olympus and Panasonic Standard Four Thirds Digital SLR Cameras – Product

Olympus Zuiko 70-300mm f/4.0-5.6 ED LensOffering a field of view to 600mm (35mm equivalent), the high-mobility Olympus Zuiko 70-300mm super-telephoto lens is an ideal choice for sports, nature, and other types of long-distance photography. The lens incorporates three extra-low-dispersion (ED) lens elements, which combine to offer a sharper, higher-contrast imaging performance, The lens’s Four-Thirds system, meanwhile, ensures that you don’t lose your macro or super-telephoto versatility when you switch to a different camera body. The lens even supports tele-macro photography thanks to its 1x magnification (35mm equivalent).


  • Focal length: 70-300mm
  • Maximum aperture: f/4 to f/5.6
  • Lens construction: 14 elements in 10 groups
  • Angle of view: 18 to 4.1 degrees
  • Closest focusing distance: 3.14 feet
  • Maximum image magnification: 0.5x
  • Filter size: 58mm
  • Dimensions: 3.14 inches in diameter and 5 inches long
  • Weight: 21.9 ounces
  • Warranty: 1 year
Product Features :

  • 140mm-600mm equivalent Zoom lens for all Four Thirds cameras.
  • Includes, ED 70-300mm F4.0/5.6 Lens, Front and Rear Lens Cap,
  • Lens Hood, instructions, and registration card.
  • 3 ED lens elements
  • 1x magnification for macro

Olympus Zuiko 70-300mm f/4.0-5.6 ED Lens – Review:


First I got only mediocre results from this les then I decided to to a quick resolution chart test. And I couldn’t believe my eyes that how sharp it is, at least in a studio. Let me provide you my results.
Tested on an Evolt E-510. Please note that the horizontal absolute resolution limit of E-510 is just 2100 LPH due to the famous DPReview.com. Anything sharper won’t reflect here.
Here you go.
70mm F/4: 2100 LPH. F/4~up, 2100+ LPH.
150mm F/4.6 1900 LPH; F5.6~up 2100 LPH.
220mm F/?? didn’t test; F/7.1~up 1950+ LPH.
300mm F/5.6 1750+ LPH; F/8~up 1850+ LPH.

“+” means unsure but at least.
Note I am just trying to measure the ‘absolute resolution’ here which means the ‘extinction resolution’ go even higher (usually 250 LPH higher).

Wow! This means from 70-150mm (that is 140-300mm equivalent) the lens resolution is beyond the current 4/3 cameras! From 150-300mm (that is 300mm-600mm equivalent) this lens pretty much scratches E-510’s limits.

On the downside. I do find the focus to be very slow, especially in low light where it can be erratic. It is frustrating sometimes. So my medicore results came from the focus. Whenever I get the focus right, I get tack sharp results. But it is not easy with this lens. Be prepared to use this lens only in bright light.

How much did I pay for this lens? 360 dollars, not 3600 dollars! I know its limit but with some very careful work I can get some professional level results on my wildlife shots.



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