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DIY Apodization Filter replace the aperture.

Started Dec 19, 2018 | Discussions thread
OP vfan Forum Member • Posts: 64
Re: DIY Apodization Filter replace the aperture.

I made B&W films of filter many year age.

Image quality is full of blur, ghosting and flares, and some highlights can also produce overlays. B&W film production also has a lot of uncertainty, it is difficult to control.

So I don't think film (or laser printing ) can get good applications in optics element.

In my approach, I can control the dye concentration to produce the desired gradient.

Polyester resin needs to be very uniform and degassed.

It does not reduce sharpness and produces diffraction, but it still adds flare.

In the Maxxum 7's STF method, it can't take pictures in daily. I did not consider this option.

 vfan's gear list:vfan's gear list
Sigma SD15 Sony Alpha DSLR-A900 Ricoh GXR A12 50mm F2.5 Macro Ricoh GXR GR Lens A12 28mm F2.5 Sony 135mm F2.8 (T4.5) STF +1 more
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