April 19, 2014, 08:40:28 PM

Author Topic: Canon 70D - an idea- digitally enhanced bokeh- Magic Lantern or Firmware?  (Read 87 times)

neoday2

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Good morning- this is a thought I had this morning on the way in to work.  With the 70D's dual pixel design, would it be possible to "digitally enhance" the bokeh of images?  Could you load bokeh profiles since the camera knows what is in focus and what is not?  Someone- Magic Lantern (when available), Canon, or even Adobe Lightroom could create bokeh profiles for the parts of the image that are not "in focus" based on what the sensor is reporting/sharpness.

Or does something like this already exist?  This way, you could get F1.4 bokeh on almost any lens at any F stop.

Your thoughts?

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Mt Spokane Photography

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Just what specifically would you enhance?  Bokeh is not a well defined term and means different things to different people.  It is not something that can be measured, its subjective.  First, a method of measuring it would be needed, and so far, no one has one.
 
 

neoday2

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By "enhance" I mean to increase the power of the out of focus capabilities.  Larger apertures (assuming same focal length) produce more of the "blurr".  Each lens has different bokeh characteristics- number of aperture blades, elements, etc impact how bokeh is rendered.  You could create bokeh profiles that add additional softness (read out of focus/depth perception) to the image.

Think about the bokeh difference when taking a picture with a 50mm lens at F8 vs F1.2 and a subject that is 10' away.  The images would be substantially different. 

Now, if you wanted to get a similar bokeh to the F1.2 but your lens is only capable of shooting F8 that would be impossible (without lots of time in photoshop).  But since the sensor can detect the phase, can it then enhance the image with the bokeh profile you select- much like choosing Portrait, Landscape or any of the other image enhancements. 

It might end up looking like an Instagram photo but I gotta believe it would be better because of the additional phase information provided by the sensor and focus point?

David_in_Seattle

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Good morning- this is a thought I had this morning on the way in to work.  With the 70D's dual pixel design, would it be possible to "digitally enhance" the bokeh of images?  Could you load bokeh profiles since the camera knows what is in focus and what is not?  Someone- Magic Lantern (when available), Canon, or even Adobe Lightroom could create bokeh profiles for the parts of the image that are not "in focus" based on what the sensor is reporting/sharpness.

Or does something like this already exist?  This way, you could get F1.4 bokeh on almost any lens at any F stop.

Your thoughts?

That's not quite possible as bokeh is formed with the correlation of sensor size, aperture, and distance to subject.  Now, you can digitally add a similar affect via photoshop, but there's no firmware that can match PS's capabilities straight from camera.  Though time it would take to do so would not be cost productive, plus there are other added benefits with using a wide aperture lens, namely the ability to shoot in low light.
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