Visit the Olympus Workspace download site and enter your Olympus camera serial number. Note that you cannot process Raw files from other camera makers, or DNG files however, you can edit JPEGs from any camera. With it you can process Olympus Raw files, apply Olympus’s famous Art Filters, and perform the extremely wide assortment of edits listed below. Workspace is a powerful editing tool that’s available to Olympus owners free-of-charge. No, Olympus Workspace is not a Photoshop replacement. Background blur (left crop below) is quite smooth and foreground blur is surprisingly silky.Free to all Olympus users, Olympus Workspace has SECRET super powers starting with the ability to apply ANY Olympus Art Filter to ANY image file captured by ANY camera, scanner or screen grabber. The rendition of blur in the critical focus transition zone is much better. The inner zone of the discs is slightly nervous and there is a bit of an outlining effect which is getting emphasized the more you stop down. Out-of-focus highlights are reasonably well rendered. You don't really buy a 12-100mm f/4 MFT lens for shallow depth-of-field applications - remember that we are talking about a "24-200mm f/8" lens in full format terms. Lateral CAs (color shadows at harsh contrast transitions) are very low and negligible by real world standards. If you want to know more about the MTF50 figures you may check out the corresponding Imatest Explanations The chart shows line widths per picture height (LW/PH) which can be taken as a measure for sharpness. ![]() Please note that the MTF results are not directly comparable across the different systems!īelow is a simplified summary of the formal findings. The LW/PH figures were 10% higher at 12mm and 5% higher at 100mm - just to give you can idea that distortion correction is indeed lossy when it comes to the impact on resolution. Side note: Out of curiosity I repeated the MTF tests at some settings WITHOUT distortion correction. The tested sample had a good centering quality. In order to achieve the best performance you should stop down to f/5.6 here. The border/corner is reduced but remains decent at f/4. At 100mm, the center quality is "just" very good. The characteristic remains roughly intact at 50mm. The center quality is marginally reduced here but the borders/corners are slightly sharper. The sweet spot of the M.Zuiko is around 25mm. Remember that f/11 is equivalent to f/22 on full format cameras - you will rarely if ever need such a small aperture anyway. The quality is still very decent at f/8 but you should avoid f/11 and beyond (-> diffraction). The outer image region is very good even at fully open aperture. The center performance is great at 12mm f/4 and f/5.6. Keeping the above context in mind, the Olympus M.Zuiko 12-100mm f/4 Pro is actually darn impressive although it doesn't touch the best performing MFT lenses, of course. If you have a look at the following chart you will observe that the center quality is actually highest at f/4 which is not surprising (due to diffraction). Due to diffraction Micro-Four-Thirds has its sweet spot around the f/2.8 mark - at f/4 the quality is already limited by diffraction. On top of that comes the fact the we are talking about a lens with a maximum aperture of f/4. It is impossible to design a reasonably-priced long range zoom that can truly play in the same league as high performance zoom lenses with a lesser range or even primes. Let me begin this chapter with two statements. At 100mm you can traces of light falloff at f/4 again but this is acceptable. However, the light falloff is very much reduced at 25mm and 50mm. The vignetting is very high at all apertures here peaking at 1.8EV (f-stops) at f/4. When looking behind the scenes again, things aren't that rosy anymore - at least at 12mm. ![]() The issue is pretty much negligible at longer focal lengths. In this case, the system shows a relatively low degree (0.7EV) of light falloff at 12mm at f/4 and f/5.6 and slightly less so beyond. Auto-correction is also applied to the vignetting characteristic.
0 Comments
Leave a Reply. |