E-M5 Firmware update... V 2.0 today..

Started Jan 29, 2014 | Discussions thread
texinwien Veteran Member • Posts: 3,326
Incorrect Explanation

Thomas Niemann wrote:

Two new features were included in the firmware update: ISO 100 and small focus points.

ISO 100. In the ISO menu you'll notice ISO 100 is marked as LOW and ISO 200 is Recommended. This indicates that ISO 100 is actually ISO 200 over-exposed by one stop. For example, if the ISO 200 exposure was 1/100 @ f/4, and you shot it at 1/50 instead, you would be over-exposing by one stop. And 1/50 @ f/4 would be the proper exposure for ISO 100. The result would be highlight clipping and less dynamic range because ISO 200 is the optimal ISO for the sensor. As a benefit, shadows would receive more exposure and, consequently, less noise.

As I have noted elsewhere in this thread, this explanation is incorrect. It is incorrect for the E-M1 and the E-P5, and will with practical certainty also be incorrect for the E-M5.

ISO 200 on the E-M5 (and all of the other Olympus m43 cameras with this Sony sensor) is actually ISO ~100 underexposed. The new LOW settings will be like ISO 100 exposed correctly.

Small focus points. To implement this feature, do the following:

1. Click the left arrow on the control wheel to bring up focus points

2. Click on the Info button

3. Click the up/down arrows on the control wheel to select a smaller focus point

A very nice addition!

I agree, both are very nice additions, and the additions are even nicer when you realize that the LOW setting isn't faked.

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Panasonic Lumix DMC-GM5 Olympus E-M5 II Olympus 12-40mm F2.8 OnePlus One Canon EOS 300D +20 more
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