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Tutorials, Informative & Classic threads A new e-Group area for all the wonderful tutorials and helpful threads put on here by our members. Tutorials on using software, camera hardware - and feel free to request a tutorial if you need assistance!

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  #16  
Old 7th June 2014
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Zuiko Zuiko is online now
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Re: Expose to the right

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Originally Posted by pdk42 View Post

the Oly sensors are actually pretty good at keeping the noise under control when you push shadows. I remember doing some comparison shots between a 5dii and an E-PL5 when I first got into u43. Pushing one shot with lots of deep shadow, the Oly did significantly better than the Canon which showed lots of noise and banding well before the Oly struggled.
Try that with something like an E-3! Since those days thare has been a significant, even spectacular, improvement in noise control in Olympus cameras. It's true that ETTR is less important to Oly users than it used to be.
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  #17  
Old 7th June 2014
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Phill D Phill D is offline
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Re: Expose to the right

Haven't read the Chromasoft article yet as I've been googling ettr first. It was something I'd never really understood before. Anyway I've always used a little under exposure (-0.3 to -0.7) in my shots as my previous camera the E510 used to blow highlights easily and it just seemed to give me more contrasty images. Old habits die hard and I've had a tendency to do the same on my E-M1. More lately I've been fiddling with the exposure compensation more and more and even over exposing shots for effect. So inadvertently using ettr sometimes. Now off to read the Chromasoft article to get even more confused
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  #18  
Old 7th June 2014
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Ross the fiddler Ross the fiddler is offline
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Re: Expose to the right

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Originally Posted by Phill D View Post
Haven't read the Chromasoft article yet as I've been googling ettr first. It was something I'd never really understood before. Anyway I've always used a little under exposure (-0.3 to -0.7) in my shots as my previous camera the E510 used to blow highlights easily and it just seemed to give me more contrasty images. Old habits die hard and I've had a tendency to do the same on my E-M1. More lately I've been fiddling with the exposure compensation more and more and even over exposing shots for effect. So inadvertently using ettr sometimes. Now off to read the Chromasoft article to get even more confused
Yes, the older Panasonic sensors didn't have much headroom to rescue blown highlights from the raw files & that is how I need to use the Stylus 1 with its small sensor, nice results if I'm careful with the exposure.
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Old 8th June 2014
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Re: Expose to the right

Well read that article now and I think I understand what's being said. Suffice it to say for me I think I'm just going to expose as I think best for each scene as I go. On the E-M1 I'm probably not going to carry on dialling in the -0.3 /-0.7 as I used to with the E510.
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Old 8th June 2014
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Re: Expose to the right

I wrote about this way back in 2009 on my DPNow blog:

http://dpnow.com/forum2/blog.php?b=60

As sensors have improved since then I would expect the advantage in exposing to the right to be even better although this could be balanced by improvement in shadow noise performance as well.

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  #21  
Old 8th June 2014
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Re: Expose to the right

The chromasoft article seems not to describe my understanding of ETTR.

If I take a shot and see in the histogram that there is a significant gap between the highlights of the image and the RHS of the histogram window, I increase the exposure such that the highlight end of the image almost touches the RHS of the window. This ensures that as much data available for the image is captured. An exception to this is when there are small very bright highlights (eg specular), when I'll 'edge' the histogram such as to sacrifice whatever detail may be in the highlights.

As has been mentioned, the key is the linearity of the sensor. Half of the data in an image is contained in the brightest stop. This means that if you expose such that the highlight end of the histogram stops at the middle of the window, you've only captured half of the available data. Subsequent stretching out of the data in PP introduces discontinuities which show as posterisation.

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