I grew up with SLRs and don't feel comfortable or steady composing with a LCD at arm's length. So I bought the VF-4 EVF to use on my Olympus Pen E-P3. I updated camera firmware to 1.7, slid on the VF-4 and was propelled into eyeball Nirvana! :tongue: Mammoth EVF Bump CONSTRUCTION This designed in Japan born in PRC viewfinder is plastic and finished in a grippy flat black finish. It appears well made but looks a little out of place against the brushed aluminum of my E-P3. It's so light the camera feels the same with or without it. Although featherlight, it adds considerable bulk, protruding 3 cm from the top deck. It's about 20% larger than the VF-2 due to the squarish housing (rather than round). I found the older VF-2 cosmetics and size more attractive. SHOE LOCK The VF-4 slides into the hotshot and automatically locks. Squeeze a wee button to release it. The lock feels secure although a heavy blow would probably knock it southbound. The popup flash of my E-P3 has plenty of clearance. To use the VF-4, press the button below the eyepiece to toggle between EVF and LCD. If you have an E-P5 with eye detection, you can let your eyeball do the toggling! TILTING EYEPIECE I love the ability to tilt the eyepiece and cannot emphasize enough how useful tilt is for shooting in tight spaces, ground level or for stealth. Unlike the shoe mount, the tilt section cannot be locked and uses a friction clip to hold it in place. The clip holds the tilting section tighter than the VF-2, making it less prone to inadvertent movement. Rough treatment will certainly spring it from the clip. EYE COMFORT I don't wear glasses, but I can see the entire image with sun glasses on, so plenty of eye relief for eye glass wearers. The knurled diopter adjustment wheel is large and sits on the top right. A quick tweak and the image was sharp. The click stops are tight so inadvertent adjustment should be rare. It comes standard with a rubber eyecup, albeit not as deep or comfy as the accessary EP-9 Eyecup for the VF-2. EVF DISPLAY QUALITY My initial impression was the 2.36MP display was a knockout: remarkable clarity and the 1.48x magnification nips at the heels of a full frame DSLR viewfinder. Upon closer inspection I found image quality a mixed bag but a still a nice improvement over the prior model, the VF-2. Under diffused soft light, the VF-4 produces a smooth and vivid view a stone's throw from the viewfinder of a good DSLR. In bright sunlight, performance is similar to the older VF-2: sharp and contrasty but blocked up shadows and compressed dynamics. Basically, you can't see much shadow detail in sunlit landscapes. In dim light it yields a brighter view than reality but at the cost of moderate color noise and texture artifacts. The breakthrough is vastly improved panning performance: the smearing and jumpiness of the VF-2 is nearly gone, even in low light! I assume this remarkable improvement is due to a faster refresh rate and is a game changer for those interested in panning sports or zippy rug rats. The clarity of the VF-4 makes it wonderful for stealthy reviewing of images through the viewfinder, e.g., in a dark theatre where you don't want to cause a distraction. Unlike Live View display, playback renders full dynamic range and detail. After a few weeks of regular use the electronics seemed to "burn-in" and overall EVF image quality improved noticeably. It could be my imagination or a miracle (improving eyesight!) but definition and shadow detail feel a notch better than they were straight out of the box. I've noticed burn-in with speakers and headphones but had no idea EVFs improved with break-in. Whether or not burn-in helped is a moot point. The bottom line is the image quality of the VF-4 rocks! WORTH UPGRADING FROM THE VF-2? I struggled with that question and here I am with a VF-4. Although 2.36MP seems like a major upgrade from the 1.44MP of the VF-2, in practice it's a minor improvement in additional visual detail rendered. Dynamic range is same for both viewfinders, e.g., much narrower than the main LCD. The VF-2 renders slightly deeper blacks than the VF-4. However, if a larger viewfinder image, higher resolution, smoother panning and a shoe lock are important to you, the VF-4 is the only show in town. Despite my nitpicks, the reality is the VF-4 is a big step up in image quality over prior EVFs from Olympus. Yes, the VF-4 has an electronic video undertone, never letting you forget it's an EVF. However the shortfalls are diminishing with each redesign and the current takeaways are likely inconsequential to most users. I mainly use my E-P3 for stationary subjects in decent light, so I can live with the few remaining EVF idiosyncrasies (I have a DSLRs for the other stuff). It's likely to be the best accessory EVF of 2013 and certainly better than any EVF used in prior camera designs. The VF-4 enhanced performance, enjoyment and ease of use with my E-P3, and that's what counts.