Panasonic vs Olympus EVF

Michael Meissner wrote:

There are at least 3 different EVF's, so it is important you realize which EVF you have:

• OLED: This is used on the Panasonic mid/upper range cameras, and the Olympus E-m10 mark II/III, Pen-F, and E-m5 mark III cameras. In general, OLED tends to be brighter, and blacks are true black. If you wear polarized sunglasses, OLED EVFs do not distort the image (it might be dimmer, but the image is not distorted). For me, most of the OLED displays tend to saturate the colors somewhat. This means in post processing you might need to raise the levels to get the image that you saw in the viewfinder.
• TFT LFD: This is used in the Olympus higher end cameras (E-m1 mark I/II/III, E-m5 mark I/II, and E-m1x) and with the older external viewfinder. TFT LCD displays do have issues with polarized sunglasses. In my experience, all Olympus cameras with TFT LFD viewfinders except for the E-m5 mark II, will distort about 1/2 of the screen when you are in landscape orientation. The E-m5 mark II seems to be completely opaque in landscape orientation. In my opinion, TFT LCD tends to have 'more natural' colors. In terms of the Olympus cameras, the refresh rate is higher for TFT LCD.
• Field Sequential: This is used in the lower end Panasonic cameras (typically GX). Unlike OLED or TFT LCD, there is only one LED per pixel, and it relies on persistance of vision, changing the LED color fast so that your eye merges them together. This tends to bother some people, particularly when the camera is moved, and they report seeing a rainbow mode.

Another factor you may want to consider is an EVF diopter adjustment. My E-M5 II and III have them. I don't need one or know about any other models but assume the the E-M1s have them.