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Microstock Photography Forum - General => Software => Photoshop Discussion => Topic started by: Bateleur on September 03, 2008, 05:34

Title: Low frequency/High frequency
Post by: Bateleur on September 03, 2008, 05:34

I was reading a photo magazine and one of the articles referred  to 'low frequency' and 'high frequency' images.

I thought I was pretty well-versed in photography, but I have no idea what those terms mean.

Can anyone tell me what's the difference between low and high frequency images?

Thanks

Title: Re: Low frequency/High frequency
Post by: peep on September 03, 2008, 05:39

Isn't it just another term for High Key and Low Key images?

Title: Re: Low frequency/High frequency
Post by: ErickN on September 03, 2008, 08:04

Don't know for sure what the magazine was talking about, but considering the same paradigm than used in noise reduction programs, or low/high pass filters, I guess that "high frequency images" means images with lots of small details (ie a landscape with lots of trees, leaves, grass,...). A "low frequency image" could be a sky with big white clouds (no fine details).