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Forum: Photographic Technique 04-04-2019, 02:44 AM  
Spot, Weighted and Matrix metering, is it the same as EV Compensation?
Posted By rawr
Replies: 42
Views: 4,328
Well, Spot only measures a small 'patch' that's probably about 2% of the frame, and ignores the other 98% of scene lighting and colours. So that's all that you'd be working with. Lots of room for variation in your metering results when using Spot.

For what it's worth, the K-5 manual illustrates the differences between Centre-weighted and Spot quite well:


Works much the same in K-1/ KP.
Forum: Photographic Technique 04-03-2019, 05:55 PM  
Spot, Weighted and Matrix metering, is it the same as EV Compensation?
Posted By rawr
Replies: 42
Views: 4,328
That article is a bit out of date. With the new 86k RGB metering sensor, metering can be way more intelligent and granular than the old 77 segments mentioned in the article.



The 86k metering sensor has 1350 metering segments made up of three striped [RGB] 45x30 arrays (plus 1350 segments used for flash exposure).

The coverage looks like this on a K-1:


and this GIF animation illustrates the useful scene detail the metering data is able to capture across each of the RGB arrays:



Plus the article lacks mention of handy AE options like 'Link AE and AF point', which will actively steer the AE to the active focus point. New WB options enabled by the 86k RGB metering sensor like 'Multi-Auto White Balance' also deserve a mention and illustrate some of the exposure smarts enabled by the better metering sensor.
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