12-19-2011, 10:59 PM
[quote name='joachim' timestamp='1324334085' post='13931']
Interference me thinks. If I look into the rear of any lens, it looks equally clear over the entire area. Still if you look at the bokeh image, find many lenses, not just mirror lenses that are darker in the centre. You understand how that comes? I always assumed it was an interference effect. If it is, the lensing in front of the sensor will change it.
[/quote]
Fundamental error in your observations. You look at the lens with your very own lens, which is very small in comparison to sensor/film, and with its very own aperture too. So, basically, you are just recording from a tiny part the sensor would record from. If you would look from only such a tiny part of the sensor, you too would see a similar brightness everywhere.
Of course, that has little to do with bokeh disks or bright spots.. looking at the rear of a lens.
Interference me thinks. If I look into the rear of any lens, it looks equally clear over the entire area. Still if you look at the bokeh image, find many lenses, not just mirror lenses that are darker in the centre. You understand how that comes? I always assumed it was an interference effect. If it is, the lensing in front of the sensor will change it.
[/quote]
Fundamental error in your observations. You look at the lens with your very own lens, which is very small in comparison to sensor/film, and with its very own aperture too. So, basically, you are just recording from a tiny part the sensor would record from. If you would look from only such a tiny part of the sensor, you too would see a similar brightness everywhere.
Of course, that has little to do with bokeh disks or bright spots.. looking at the rear of a lens.