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Foveon Color differences?

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  As a general rule, your camera shouldn't have too much of an impact of the look of your photos if you are shooting in RAW and should reflect what you are trying to accomplish. The one exception in my experience has been the Sigma Foveon based sensor cameras. ( Samples ) The reason being that because they infer color quite differently than the normal Bayer pattern cameras and there is generally more room for them to not get the same color under similar conditions. They seem to be less accurate, but sometimes in ways that I find desirable. That said, in most situations this should be mostly compensated by editing choices. As a matter of practice, I figured I would try and match my two most commonly used cameras at the current time. My Panasonic S1R and the Sigma SDQH What's actually interesting about these two cameras is that the Panasonics effective 47mp, and the SDQH's 38mp (Stacked) should work out to have a similar performance in resolving details as the Bayer pattern g
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Quick Film Halation Emulation

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What is Halation Halation is an effect in film photography where light reflects off the back of the film/film plane and re-exposes the image. In most film it's typically very controlled, and it's a subtle effect you sometimes notice. The below photo has a bit happening on the brightest spots. I honestly never really thought much about it, as while you would see it on very bright objects, it was very tame, and just part of the natural look of film. This is a trend for very bright edges in a film image to bleed into the surrounding area. It tends to be reddish due to how the effect happens. We can make some general observations from this photo. It's reddish in color It's soft and blurry It's only around the brightest highlights It's more pronounced between highlights and much darker parts of the image. With that in mind, it helps to consider what is happening in a simplified cross section of color film. Color film generally works by having 3 light sensitive layer
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Location: Philadelphia, PA, USA
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Why does LOG look flat? A Quick Look

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The Short Answer: I think part of the confusion is because of the word Log.  All Log refers to is the type of function applied to the input values before being stored. This function is a logarithm instead of the typical exponent used. And has the characteristic that even as the input value increases dramatically in size, the rate of increase for the output value grows slower. For example Log2 of a series of numbers counting from 0->1024 would result in numbers from 0->10 but Log2 of a number 0->256 would be 0->8. It grows slower as the numbers get larger which has the benefit of compressing bright parts of the image before clipping. And that's really all there is to the log part. But why is it flat? I think what most people actually wonder about is why does LOG look flat? The answer is basically made up of a couple pieces. We are going to start with an OOC version of a photo. (OOC means Out Of Camera, as it not edited by the user) It looks like a normal landscape photo.
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Location: San Jose, CA, USA
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