alcelc
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Forum Pro
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Posts: 19,003
Re: GX8 EVF picture is not the same before and after the shot
Pete2 wrote:
Have anybody noticed this;
In the evening backlight you look through the EVF.
- compensate the backlight by adjusting the brightness
- press the shutter.
- Then look at the final picture in the EVF. The brightness of the picture is not what you saw before pressing the shutter. Also the colors are little different.
Then you keep doing this and you finally get it right. Is it just my camera or anybody other seen this? Any better in G9?
The following is about Panny only.
Before all there must be some understanding that Live View is a simulated image which is created upon the sensor data plus the ESTIMATED combined effect of the parameters in used.
ESTIMATED because the actual shutter speed has not been actually used, the aperture was remained wide open before actual shooting, and ISO will also stay put...
Because of the above, I take Live View similar to a foreigner who speak my mother tongue. The more better Live View of recent model = more fluent speaker in my language. However no matter how good this foreigner will be, I always need certain degree of understanding on what he want to say. Therefore, I have to learn what the actual meaning behind the image produced by Live View of every model. E.g. For GX1, if I Under expose the LV will become darker. It course tells me the exposure condition. However, I also have to upon the reduced in gamma to understand the change in saturation and contrast condition. On GX7, I have a more easy LV image to understand which gives me more direct information on exposure, tint, saturation that I have little to guess. Further improvement on GX85 and G85.
But a few situations that might affect LV. E.g. when we shoot towards strong light source, complex lighting condition, definitely LV will stop to update while >+/-3ev etc. These likely can make the LV very far off from what will actually taken.
Preview will stop down the aperture to the actual f/stop in used. Therefore its simulated image will subject to less restriction of LV hence produce a more accurate simulated image.
Under the significant improvement of LV in recent generation (IMHO from GX85 onward), it is much more usable and easier to understand (less guessing). However whenever I am shooting under complex lighting condition, or have doubt on the LV feedback, I shall activate Preview as my last resort of confirmation.
Does Preview 100% = what will actually get? No, but close enough that has yet to fail me.
Zebra of course helps, but limits to highlight overblown (ETTR). Real time histogram can tell more but just a general average exposure and contrast condition of the entire frame. Sort of LV / Preview visual guide is still the best tool allowing us to look at the exposure condition down to every small detail, the saturation and color for optimal setting.
Learn your gear well can make it into a very useful tool. If you are simply looking for an easier LV tool, it might not really worth for the upgrade.
My 2 cents.