The 100-300 II got a newer focus motor, aperture mechanism, and compatibility with newer IBIS (Dual I.S.2 with Panasonic bodies). So focusing is faster compared to version I and the frame rate is improved. A faster and more accurate AF contributes to sharper pictures. Dual I.S.2 with Panasonic bodies is much more efficient than the IBIS of Olympus cameras at 300mm. This is one area in which Olympus 75-100 wins hands down with no noticeable CA around hard, high-contrast edges (e.g. tree branches against the sky) compared to my Panasonic 100-300.

I recently bought 75-300 mm lens to use with my OMD-EM1 system in Jan 2015. (Note: I used to own the OMD-EM5 and this same lens but all was stolen in April 2014). I never had a problem when using the zoom all the way out on this lens even in low light on a tripod.Chromatic aberrations, typically seen as purple or blue fringes along contrasty edges, are a non-issue with this lens. We were hard pressed to find any evidence of CA in the raw files. It's obviously not going to rival the Olympus M.Zuiko 300mm f/4 Pro in terms of sharpness, but the Olympus M.Zuiko 75-300mm f/4.8-6.7 II is still able to produce great results if you know what you're doing with it. I have the same profession as you but I’m near retirement. I live in Sweden. I have worked as photographer many years ago before changing profession but it has always been a great interest of mine. Our kids are grown up and we got a dog that’s forcing us to go for several long walks each day. This gives me a great opportunity to exert photography! Optically the Olympus 75-300mm does very well, but not where you'd want it to - it's super-sharp at 70mm, not at the 300mm where I suspect the grand majority of users will want to use this lens. At 300mm, it's only above average, there's noticeable chromatic aberration, and the maximum aperture of ƒ/6.7 is one of the slowest I've seen for SLR lenses" Images were captured in RAW and was examined at 100% magnification in Aperture, Lightroom and Photoshop.

For wildlife, usually, a longer zoom is better. But in the travel context, you may prefer a different focal length. Simply choose your favorite images and see the focal length. If it is around one value – you have your answer. Olympus’s special camera featuresLong story short; I ended up buying both the Olympus and Panasonic and had to figure out which was the one I wanted to keep. Travel photography means photographing in cities and the small lens doesn’t attract attention. Imagine you sit in a cozy cafeteria and see a bird from a window. If you take out a bazooka-size telephoto lens – everybody in the cafeteria would look at you. This show was actually made from a window Light pollution and fog

I got greedy for this lens when I first held it. The lens is beautifully finished, light and comfortable to hold. As you can see in the picture, the Olympus 75-300 mm becomes about 50% longer when zoomed out. I could be completely wrong there though, I'm much more of a wide-angle guy, and long focal ranges aren't my comfort zone. The zoom ring of the Olympus . . . And it turns the wrong way (I own mostly Panasonic zoom lenses ;-).Zooming is not internal – as you can see, the front extends considerably upon zooming to 300mm. The zoom ring is sufficiently wide and neither too stiff nor too loose. Zoom creep is not an issue. The focus ring is narrow and ribbed, and is used to give impulses to the micromotor that moves the lens elements – in other words, it is not mechanically coupled. The lens accepts filters via a standard 58mm thread around the – non-rotating – front lens element.