Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Is it compatible with the E-P3?
Document: The VF-4 greatly enhanced performance, enjoyment and ease of use with my E-P3, and that's what counts.
I bought the VF-4 for an Olympus Pen E-P3: updated camera firmware to 1.7, slid on the VF-4 and was propelled into eyeball Nirvana! The 2.36 dot display is a knockout: remarkable clarity and the 1.48x magnification nips at the heels of a full frame DSLR viewfinder. You get a truly eyeball filling view!
A wonderful addition to my Olympus PEN E-PL5! Very pleased with this purchase; I wonder how I managed without it!
This is one of the best view finders around. I use it on my E-p3 and it has made using manual focus lens a joy.
Expense but very well worthwhile. I use it on the E-PM2 where the screen is hard to read in sunlight. Image quality of viewfinder impressive.
I'm using the VF-4 with a Olympus E-P5 and it's a fantastic tool. Like a large optical finder with lots of information overlayed. You quickly forget that it's an EVF because the there's no smearing, motion is smooth and the image is bright and clear.
yes, your camera needs it. You really understand why when you start to use it.It's fast, easy to install and for DSLR lovers it is a must have. This makes my PEN a better camera.Pros:easy to install, light, seems securely locked.Fast viewfinder, very clear and sharp. You can consult the setup from the same view eye.Cons:on E-PM1 the viewfinder does not work while LCD is in use.
D-Solutions was quick to respond and authorized the return for a full refund. As I was about to run to the Post Office to return the VF-4, I did an Internet search to confirm the VF-4 was supported on the E-PL5. I found a review of the VF-4 on my camera that mentioned that the E-PL5 firmware has to be at V1.2 or the VF-4 wouldn't power up.
This is a clear advantage EVFs have over OVFs, and that is to represent the image preview in the same medium as the target medium.Some reviews complain about slow update time, I experienced no such issues, I think those are dependent on the camera this EVF is paired with. I was able to track birds in flight with a 300mm lens with no issues. E-PM2 is a quick little performer which has no issues driving this EVF.Couldn't be happier.
Squeeze a wee button to release it. The lock feels secure although a heavy blow might knock it southbound. To use the VF-4, press the button below the eyepiece to toggle between EVF and LCD. If you have an E-P5, you can use your eye to control toggling! The body shell of the VF-4 is plastic and well finished in a grippy flat black finish. It's so light the camera feels the same with or without it.
Answer: Yep.