The 90mm probably is a great lens. The marketing around the TC is what is questionable. Not that is a capable macro lens

I said I could see the advantages of an 180mm, I never said it was necessary. I even stated it wasn’t necessarily for myself and a specialist application. That doesn’t mean I cannot see the advantage. Yes you can make great images with shorter focal, I never said you couldn’t. I have only implied that choice is good and this choice is not available on FF. It’s available on MFT due to the inherent benefits of a crop sensor. Lenstip should not be taken that seriously. Their extreme opinions (praise or criticism) and overuse of charts give them an air of authority, but they largely ignore practical aspects such as rendering, real-life usability or sample variation. In this case, I doubt that they tested this lens at macro distances, which is how it will be / should be used.Draw a 4*5 grid on an A4 sheet of paper and then the same 4*5 grid on an A3 sheet of paper. Both sheets of paper (the sensors) now have the same number of pixels despite one being bigger than the other. Now put a pattern (the same image) on each, just as you stated in your example. Then try and extract more detail from the smaller sheet by cropping and let me know how you get on. By these numbers, it seems to me that the 10X image is definitely not fully utilizing the resolution of the sensor.

The OM System 90mm f3.5 Macro IS Pro proves that the Micro Four Thirds system still has clout in an era of full-frame mirrorless. This macro lens does what a full-frame camera can’t do — use autofocus at a 4x equivalent macro. The 90mm is the kind of landmark lens that may even be big enough to sway some photographers over to the Micro Four Thirds system. Frankly, I was able to autofocus on a snowflake and get a huge level of detail without the teleconverter. Trying to find a specific snowflake with a lens the equivalent of a 360mm is very challenging. The 2x teleconverter is ideal if you want dreamy, soft abstract macro images. The 1.4 is a bit sharper, but I th The second is that even though both lenses, the OM SYSTEM M.Zuiko Digital ED 90mm f/3.5 Macro IS PRO and the M.Zuiko Digital ED 60mm f/2.8 Macro Lens have VERY close working distances, the 90mm is longer so being 3” away from a critter with the 90mm lens will by default out the photographer further away from the subject than the 60mm, and this increased distance which can often make the critter more comfortable, resulting in better photographs. cropping might yield an image that's too small to be useful (around 5 MP). So using TCs is in some cases a necessity"Sometimes I really like the perspective wider macro lenses can produce. For example, the Panasonic 9mm f/1.7 does a surprisingly good job as an almost-macro lens. Super tiny MFD, but really intimate perspectives I prefer over longer focal lengths. Thanks for the great review. I like my 60mm Zuiko but it does have pedestrian AF. I kind of hoped this would be faster. I don’t like the design of the focus limiter switches. When the lens is set to “Macro” what is the range? And that is weird that they affect the manual focus too. This also means that I might be able to answer questions about this lens from PM.net members, if they have any (answerable) questions.