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Author Topic: automated Focus Analyzer ??  (Read 19634 times)

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Hobostocker

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« on: December 01, 2014, 02:10 »
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i wonder, is there any kind of software able to spot where is the focus in a given picture and to eventually assess if the area is big enough ?

i think it could be doable mapping the image and then checking for areas with higher color/contrast intensity but i have never ever heard of any tool doing something like this.

Nikon Capture only works for nikon cameras and it's using EXIF data to spot the focus, i need something totally different fromt this, ideally i could check a batch of hundreds of pics and the software will automatically sort out of the bad apples with bad or poor focus.

by the way, similar concept for automated softwares who can spot minimal camera shakes !




« Reply #1 on: December 01, 2014, 02:37 »
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That would be quite ambitious project and still leave a lot of room for manual intervention/override.

BTW, I'm not sure if Nikon Capture reports the actual spots in focus or just the sensor spots that were used for focusing.

Hobostocker

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« Reply #2 on: December 01, 2014, 03:32 »
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BTW, I'm not sure if Nikon Capture reports the actual spots in focus or just the sensor spots that were used for focusing.

i'm sure the camera has no way to be 100% sure if the image has been shot in perfect focus or horribly shaken.
that's where a focus analyzer would come handy but i think it's not yet been invented hahaha ... :(


Beppe Grillo

« Reply #3 on: December 01, 2014, 03:43 »
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i wonder, is there any kind of software able to spot where is the focus in a given picture and to eventually assess if the area is big enough ?


I know only this (it works with Lightroom 5):
http://lightroomfocuspointsplugin.com/

fotorob

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« Reply #4 on: December 01, 2014, 08:12 »
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The RAW editor/converter Capture One has the option "show focus mask" that highlights all areas that are "sharp" with 50% green.

See here for more details:
<a href="http://youtu.be/ypX8j8TtGjw?t=1m58s" target="_blank" class="aeva_link bbc_link new_win">http://youtu.be/ypX8j8TtGjw?t=1m58s</a>

« Reply #5 on: December 01, 2014, 11:34 »
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I use capture one's green mask to check focus in studio shoots. It works pretty well.

« Reply #6 on: December 01, 2014, 11:40 »
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You could ask Shutterstock about this.  But they won't answer.

Hobostocker

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« Reply #7 on: December 01, 2014, 13:19 »
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The RAW editor/converter Capture One has the option "show focus mask" that highlights all areas that are "sharp" with 50% green.

excellent feature !!!

by the way, i just discovered they will embed a "focus mask" feature in the new PS CC but from their video it has nothing to do with the Focus Mask of capture one, in PS it will be used to remove blurry backgrounds or doing cut outs basically, however maybe this will push for some new focus features in LR sooner or later ?


Hobostocker

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« Reply #8 on: December 01, 2014, 13:20 »
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I know only this (it works with Lightroom 5):
http://lightroomfocuspointsplugin.com/


thanks a lot ! downloaded and will try tomorrow !

yes, it works only with canon/nikon picking up EXIF focus data, just as Nikon Capture does.


Hobostocker

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« Reply #9 on: December 01, 2014, 13:28 »
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You could ask Shutterstock about this.  But they won't answer.

i wonder what kind of workflow they use for photo inspection, certainly a complex DAM system to store the whole archive but for inspecting the focus i think using a monitor with the highest possible resolution would help ?

i see 27" 2560px monitors sold for as low as 600 bucks now, and apple has already 4K (4000px) monitors on sale.

with 4K you can basically display a whole 12MP image natively and instantly see if it's focused well, and with 24MP pics (6000px) you could just show the pic centered at 100%, nobody focuses on the outer edges.




Hobostocker

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« Reply #10 on: December 16, 2014, 22:08 »
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I use capture one's green mask to check focus in studio shoots. It works pretty well.

confirm !
it works fine and it can also be fine tuned, Capture One rocks !



 

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