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donbright

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Posts posted by donbright

  1. So funny, Resurrected are these HCB Psyche dissections of how he did it!! HA! Ha! Ha! There are a hundred of these. You'll never know what drove this man, rich family or not.

    He was one of the best because he woke up every day with excruciating enthusiasm for life and the spirit of curiosity, patience, a sense of just 

     loving life that translated through his camera and there are," HUNDREDS!' Of his images that are," OFF THE CHARTS! Oh, and by the way, there is also great

    imagery of the modern era. 

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  2. Because there would be a lot of aliasing artifacts if it didn't. The AA filter is needed if lenses produce detail at higher spatial frequencies than the Nyquist frequency of the sensor. 24 MP is just too low resolution and most lenses easily outresolve it, and all the higher-frequency detail would end up as artifacts if no AA filter had been used.

     

    With thr 36 MP D810 I got a few images ruined by aliasing, but not that many. With 45 MP I have only seen it clearly with one lens (500 PF). Mostly I use either really wide apertures or small apertures. This way I unintendedly avoid the sweet spot of the lens that could elicit aliasing. But with the 500 I can't avoid it and it's a very high resolution lens so I end up seeing aliasing sometimes on the D850.

     

    With 45 MP or 60 MP, it is less common to have significant aliasing than with 36 MP. I am not sure if anyone makes a 24 MP full-frame sensor without an AA filter, maybe Leica have one. (?) I think aliasing with 24 MP FX sensors would be so common and so serious that no manufacturer takes that risk.

     

    For pixel shift, the 45 MP sensor would be a better candidate. Pixel shift should remove any moire so it would have that benefit, but other types of aliasing could still end up happening. However, I can't recall Nikon mentioning an interest in implementing this feature.

     

    I would be surprised if there is any outdoor scene with no movement at all.

    Fujifilm X cameras omit the AA filter.

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