Incredibly good 9

Addendum 2015-03: I had the lens in the past but is rarely used, but I had a bit too high rejection rate (motion blur -movements the camera)
Having the new OM-D EM-5 II, it is now very common in use. The new stabilizer can now even taking pictures with 300mm (6000mm KB) from his hand. I can make incredibly beautiful shots with a traumhavten bokeh

After reading the previous high ratings, I wondered. Why can not an objective so getting a high score, but where the AF rel. slowly is (compared to other Olympus lenses) and therefore you but very much misses has in less than optimal lighting conditions ???

I wanted it so know himself and ordered it to me. Now I need the other technical details not quote.

As I previously came from the Sony World (A77) Therefore, only a few compared to the Sony telephoto zoom:

Processing is a higher class, rather similar to the expensive Sonny 70-300 G for 980 opposite the Sony SAL 75-300 (APSC) in Olympus.

I did it once with identical older recordings of my standard test Motives compared (a house on the opposite side of the valley just 933 meters as the crow flies). At that time, winning with the Tamron 70-300 were (cuts in test even better than the almost identical Sony G 70-300 from) shot. Incidentally, I think that Sony is better (faster AF) than the Tamron.

Ewtas late I have almost twice as expensive Sony 70-300 G with a 16 MP Alpha SLT55 at Iso 200 f 7.1 compared with the Zuiko (Iso 200 f 7.1) Tripod / self-timer in both.
The Olympus lens (at half price) is significantly better that I can tell every friend Sony. Power not as a test, there come to you the tears !!
Essentially, it is the super contrasts (Sony flat / Zuiko high contrast) and sharpness (Sony so la la / Zuiko knackscharf with many details)

Sony camera / kplt 1.419 kg Olympus kplt 0.991 grams (kplt: camera, strap, lens, sun visor, filter, removable disk, battery, SDK) (maximum telephoto 450mm Sony / Olympus 600mm !!)

I did not want to believe the Olympus is clearly more neutral in color, contrast and really much much sharper than the Tamron. (Both times used a tripod with the self-timer)

Then I once pushed up the photos on unreasonable KB 1200 mm equivalent (pixel peeping). The Olympus 75-300 photo is still incredibly detailed the Tamron photo, however, is useless. Since the result so blatantly different in favor of Oly lens that iches soon again after testing be under the same lighting conditions and the same aperture / Time / ISO and with the Sony G 70-300

I place subject purely a detail of the two images as a collage. As you consciously sees only the roof, you can see any private details.

Even the Tamron was unusable in bad weather 4.0 to 4.8 does not make much difference

These are lenses for use of sunshine and very good light otherwise tripod!

So 5 stars for optical quality. It is to this price so good that I on the points deduction due to slower shutter and the slower AF related - -verzichte and thus some misses.