Well, I am not sure what is causing it. The second copy has been sent by my vendor to Olympus service and they told me that the lens was fine. After pointing to the softness on LHS on photos which I took and provided to them as a proof of the issue, they decided to give me a new replacement copy. I got it today and it is exactly as the previous two.
Any chance you can furnish a capture
I have that lens on my X5S and while not a professional I wonder if you can furnish a picture/esample of this softness?
Thanks but these are all brand new lenses from the latest shipment to Australia. The one I have now was checked by my local dealer and he confirmed that it has the latest FW. Thanks for trying to help though.
FWIW my 45mm is near perfect from edge to edge and corner to corner from f2.8. It only has one quirk. All photos have frame about 2mm wide of corrupted pixels all around. But that I would call a minor issue, easy to deal with by croping those pixels off ( I made custom action in PS and keyboard shortcut to trigger it). Strangely this is not visible in video.It's a known problem. I tried several lenses, and ended up with just one I liked most. However, I still have to close the aperture up to 6.3 to make the left corner blur go away.
By the way, the Olympus 45mm blurs in the right corner
That's rather strange. I've never seen any frame in my images.
The corrupted pixels frame could be hard to spot sometimes but if you look closely at 100% magnification in PS you will see it. What is astounding to me that 4 of the Oly 25mm I tried were almost identically bad in regard to the blurry left edge. The central area and right side splendidly sharp wide open and superb from f2.8. This lens has potential to be optically amazing if it was not for this wide spread problem. Olympus should have a good look at their assembly line where they produce this lens. It should not be that dificult to identify where the problem is. As it is they are damaging their own reputation by selling what is obviously a faulty product and this has been going on apparently for years!!!
Here is a sample shot with 45mm. Shot as DNG, converted to TIFF in LR and then saved as JPEG in PS. The corrupted pixels are best visible in the green foliage but they are all around. In most situations not even a concern but for the nerdy pixel peepers a head scratcher nevertheless
This thread got derailed and confusion set in with your question about the 45mm lens' quirk on x5s camera where the photos have this tiny frame made of corrupted pixels. The photo I attached was to show that. It has NOTHING to do with the topic of this thread which is softness on left side of all photos taken with the 25mm lens at f1.8 to f4. I have not attached sample photo taken with 25mm because most owners of this lens attested having the same experience which lead me to believing that this is a common decentering flaw of the 25mm lens and it has been the case for years. Olympus should look into this! It is a disgrace that they are churning out these faulty decentered 25mm lenses and have been for years!!!
That is a plausible possibility and maybe most X5S cameras have marginally off center sensor placement. It could be assembly line issue or how is the PC board holding the sensor cut and placed withing the camera. I checked the sensor after reading your post and indeed it seems to be shifted to one side. There is this tiny "frame" about 1/2mm wide all around the active pixel area and the frame is visibly wider on right side (around 1mm) and almost none on left side meaning the sensor is indeed shifted to the left when looking at it from the front (which is the left side of the photo - the soft side). So the chances are that the 25mm lens has image circle barely covering the sensor and that could be the reason for the blurriness near the left edge of the image. Interestingly my X5S does not suffer from that sudden loss of sharpness near the left edge with the 12mm and the 45mm. It could be that they have both larger image circle and cover the slightly off center sensor without problem.
www.dpreview.com
I am getting more and more confused with every new post?Take a look at this thread:
Second decentered 25mm f/1.8, what's going on Olympus?!: Micro Four Thirds Talk Forum: Digital Photography Review
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The X5S has nothing to do with the problem.
