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Very nice. How much does it differ from multiple exposure functionality of Nikon’s D8xx cameras? Sadly, no mirrorless FF or MF cameras implement multiple exposure with raw image as result.To quote our article on IQ4 Automatic Frame Averaging
"At its heart, this tool works by averaging two or more (often many more) sequential captures together, generating a single raw file. This has the effect of evening out noise in the shadows. With four samples the noise should be roughly half as much as a single capture (which is already extraordinarily low), with sixteen samples it should be roughly half as much again. In theory this technique can be used by anyone with any camera by capturing more than one image of the same scene and layering them with a low opacity in Photoshop or via specialized software. However, manual frame averaging requires capturing many gigs worth of raws, processing even more gigs worth of TIFFs, and minutes (or even hours) worth of computer time; just to generate a single output image. The IQ4 does exposure stacking internally, on the fly, and generates a single raw file ready for immediate use. Moreover, the IQ4 can do it entirely free of temporal gaps and entirely free of vibration."
Doug, this question indicates you misunderstand the fundamental nature and purpose of the tool, which is understandable because it's a very new way of shooting! I would suggest reading our article; we're about to add additional sample images.Kind of hard to believe that it could take the averaging exposures fast enough to eliminate any movement in the scene like wind blown tree leaves or flora
For long exposures this is a non issue since you would have that movement anyway.Kind of hard to believe that it could take the averaging exposures fast enough to eliminate any movement in the scene like wind blown tree leaves or flora
We're about to post comparisons of ISO 50 with-and-without and a download link to all raws.Example on DT's site is using 2000 ISO, which is not that user friendly in single exposures, where as in their example results seem very impressive.
Note, to Doug, would love to see the raws, especially if there are comparisons same scene, one shot with Frame averaging, one without.
Thanks
Paul
That would meet the definition of game changing. This was one of my motivators to go to the IQ4. So glad it's almost here.It works on any camera the IQ4 works on, including tech cameras and view cameras (e.g. Arca R)
Indeed, given how game-changing I expect this feature to be to landscape and architecture shooters, I'd expect a lot of use of this feature on tech cameras.
The gapless technique is implemented with the "best-in-class sensor-based Electronic Shutter system." Do other cameras with ES have a noticeable gap between exposure when using ES?So I can shoot car light trails Gapless without using a single long exposure. Sounds great. Still would prefer better communication..
FWIW, the Panasonic S1/S1R do an amazing job of handling movement in a scene when shooting in hi-res mode that combines 8 successive images into a single RAW file of twice the native resolution of the sensor.Kind of hard to believe that it could take the averaging exposures fast enough to eliminate any movement in the scene like wind blown tree leaves or flora
Yeah that didn’t quite come out right, did it!"Median stacking stacking"?
We'll have an article about the Automatic Frame Averaging tool posted shortly, which should answer any questions you have.
I am guessing it has entirely to do with the length of time selected. If for example the samples are a longer length the cars can disappear, but if it is short it would have an "effect" look.Yup - site back up.
Ok, so I like the explanation of decoupling total time from shutter speed. Very cool.
This is absolutely amazing. Mind is racing with the possibilities, but again I would stress that the ability to have the user determine the method of averaging would open up even more possibilities.
Doug - you explain how with longer “total times”, moving cars would become a “sea of smoke”. This of course makes total sense. But with modal averaging, the cars would disappear completely and you’d have an empty road.
I can’t imagine this would be much of a technical challenge to implement, and am a little surprised Phase One didn’t include the option from the outset.
Kind regards,
Gerald.
Same with ND filtersKind of hard to believe that it could take the averaging exposures fast enough to eliminate any movement in the scene like wind blown tree leaves or flora
If you are in no rush I would wait.I am currently a IQ3 100T user. I have been following the comments for IQ4 since it announced. Does it worth to upgrade to IQ4 150 now? It seems all the function is not ready yet and IQ4 seems a testing product so far. Anyone can give me some comments?
Thanks!
Thank you for your reply!If you are in no rush I would wait.
Lots of features are missing that were simply there in iq3 100.
But then again it really depends what you use on the current iq3100 and if you would miss that on the iq4150?
The image quality is great and movements with a tech cam are great (Main reason I bought and the frame averaging(What I have been waiting for)).