Radiating said:privatebydesign said:That has to be the dumbest "proof" ever.
You are totally mixing up the ability to blur white and black bands, thereby creating grey, with lack of contrast, this is a spurious argument. That the Canon lens blurs the black and white bars faster than the others proves it has smoother out of focus blur. The fact that the dog picture didn't contain any black pixels whatsoever even though it has a black nose is a processing issue not proof that the lens has no contrast.
To prove your idea you'd have to show that a correctly exposed full spectrum image with areas in the background that are, 1, black, 2, out of focus, 3, large enough to not be affected by the range of tones around them.YourBridget's dog image would have been a good example, had it not been for the fact that the black levels were raised to the level that they were no longer black, or even close to it. It isn't difficult to prove there is no black after you take it all out.
A few years ago I worked making content and creating characters for video games. I'm responsible for implementing the first bokeh effects into a best selling video game. I'm personally responsible for creating some of the most iconic images of the last decade, and in doing so I consulted a few people on bokeh which consisted of dozens of optics experts that researched for universities. I'm certainly glad you set the record straight. For years, I've been foolish enough to believe that Ivy League professors were legitimate and knew what they were talking about.
There is no such thing as "blurring faster" when comparing identical apertures and focal lengths. The diameter of the circle of confusion is identical, and your statement is mathematically impossible. The Canon adds glow to objects that are out of focus. This is a very simple concept to understand.
You can decide if you like this glow or if you do not like this glow personally. However I can tell you that it is an unusual feature. Basically all of the common pro Canon, Nikon or third party lenses do not exhibit this behavior.
Hope that helps.
I admit the word "faster" was too easy to misinterpret, I should have used smoother.
As for your bio, I am unimpressed, as you would be were I to tell you I was the first Westerner to walk the entire length of the Great Wall Of China on my hands and that I also hold four Guinness world records.
But back on topic, anybody with your reputed skills and reputation should be able to understand the lunacy/futility/pointlessness of "proving" lack of contrast in an image that one, they didn't even take, and two, had all the black taken out!
Read the actual words I wrote, I have not said your opinion is without merit, I have said your "proof" is without merit. As I already said, your point could be easily made were you to post an unedited copy of
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