Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: I have an Olympus E-PL1. Which is better - turn off the camera IS and use the lens IS OR use the camera IS and turn off the lens IS?
Document: it'll open possibilities you did not expect.PS: if you are an Olympus E-PL1 owner... do NOT turn on the lens IS. let the olympus in-camera IS do the work. if you have *both* systems working against each other...
The price was right when I bought it for $199. I like Panasonic lenses because it always comes with a lens hood. It has built-in OIS on the lens for Panasonic camera which does not have in body IS. For Olympus users, you just turn off the OIS on the lens and use the on camera IS instead. The lens work great outdoors but not good indoors in dimmed light unless a flash is used. Overall, I am happy with this lens not bad for the price.
My E-P2's in-body stabilization seems to be more effective, so I use that instead (note to PEN shooters: you can't combine OIS with in-body IS, you must choose one or the other). If you're shooting Panasonic, OIS is your only option, and it's better than nothing.When it comes to video, though, OIS is a godsend.
This lens works very well with my PEN E-PL1 camera. The focusing is reasonably quick, and the lens is sharp. I use the in-lens stabilization vice the camera. Just have to remember to switch it back on.
)UPDATE - By the way, I have since found out that because this lens has an On/Off switch for its OIS, you can turn the len's OIS on and turn the camera's built-in IS off while taking videos, and completely eliminate the "Jello" or "jelly" effect that the built-in IS of the PM1 or P3 causes in videos. This is GOOD NEWS for owners of the E-P3 and E-PM1!
I just got this lens a few days ago and I am sold! I bought the Olympus Pen E-PL1 kit from Amazon Warehouse deals and saved enough to also get this lens at the same time.I currently have a Canon Rebel T3i, with some "L" lenses, and I knew I was stepping down, but had read about the 4/3 systems and was interested in a smaller camera for those times when the Canon was just plain too big and too heavy.
at first, i couldn't get a good fast shot at 200mm. not even close. all images with any type of action, even in bright light were not sharp.however, read these reviews and experimented and the following combination is working very well for me.1) update LENS firmware to 1.3 using olympus digital camera updater2) turn CAMERA IS to IS1 and turn LENS OIS OFF. (like others in here say, definitely don't have BOTH lens and camera IS on...)
I've been using the Panasonic 45-200mm for a few weeks now with an Olympus PL1 and here are my impressions:--Construction is good, though it's just a bit big on an u4/3 body. All things considered, it's about as small and light as you could hope for, though my camera rests on the lens instead of the body with this lens attached (might be better with a Panny body)--Focus is fast and very quiet.
Bought this for my E-PL2. A truly fine lens, but it is heavy for an ILC lens due to the built-in IS. However, I returned it within a week when Olympus put their 40-150mm lens on sale for $99.
addressing the 'most helpful' review that states OIS not effective: i've taken shots @ max zoom (400mm equivalent) with 1/30 shutter with tack sharp results. that's a 10x slower shutter speed than the 1/focal length rule would suggest (i.e. you should shoot at 1/400 for a 400mm lens to eliminate camera shake), and better than i get with my full frame 70-300mm canon DO IS lens.i use this with my GF1 without the electronic viewfinder.
Answer: For any Olympus body except the OMD EM5 (or any future bodies with 5 axis in-body image stabilization), use the lens OIS with the Panny 45-200. Pretty much everyone agrees OIS is better than IBIS with this combo.