Highlight/Shadow "blinkies" on OM-D E-M5 - frustrated in M mode

Started Sep 4, 2013 | Discussions thread
sigala1 Veteran Member • Posts: 3,818
Lens vignetting

pavinder wrote:

I'm feeling like a bit of an idiot here. The concept of the blinkies seems brilliant, but in practice I can't make any sense of the relation between the exposure settings on my camera and the H/S areas being shown.

I'll explain with a typical example, and would really appreciate if someone could explain what I'm missing.

I'm using the camera in M mode with spot metering.

The test subject is the interior of my room, with glass doors leading to a sunny outdoors, where cars, people, trees are moving. The scene is beyond the DR of the sensor, so I always can see either orange or blue H/S areas.

If I meter and set exposure for the interior wall, then the outside is shown in orange (as expected). If I hold the camera still then as I change my shutter speed or aperture, the blue/orange areas change accordingly (again as expected).

However if I then move the camera so that my frame is centred on the outside scene, the orange/blue areas change even though I haven't changed my exposure! Interior areas suddenly turn blue, and only the brightest parts of the outside remain orange.

If I slowly move the frame to centre it on different parts of the outside scene, the orange areas continue to change. It seems as if the H/S areas are completely independent of the exposure I have set on the camera and are only showing me the areas that would be under/overexposed if I changed my exposure to meter for the current centre of the frame.

This makes sense for the automatic modes, but of course this is no use at all in M mode. I have already set my exposure based on the subject and then just want to see which areas will be over/underexposed as I reframe this subject within the frame.

One workaround seems to be to hold the shutter release button halfway down as I recompose (then the orange/blue areas don't change).

But sometimes I want to reframe and then wait some time until background elements move, or take a series of shots over a long period during which background shadows/sunlit areas may change quite dramatically. It's quite impractical to stand there with the shutter half-pressed for minutes at a time (or longer) while monitoring the frame.

Is there a setting for the blinkies which will display the coloured areas relative to the current exposure setting?

Thanks in advance for help.

The edges of a lens can be one-stop darker than the center or more if the lens has a lot of vignetting. For most lenses, there is at least a half-stop difference wide open.

So when point the camera differently, it will put different parts of the scene into the vignetted area of the lens.

Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow