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Mysterious smile at f/0.75

Mysterious smile at f/0.75

I recently went to a model shoot event, where I mostly used the fast f/0.95 vintage "Dream Lens" on the Sony A7 II. I asked a model if she is up to a unique shot with an even faster lens, and she agreed.

For this I used a Kowa 65mm ƒ/0.75 lens, built for X-ray machines, not for regular cameras. This ultra-fast ƒ/0.75 lens is about three stops below an ƒ/2 lens!

I don't yet have an adapter, so I was holding the X-ray lens in front of the open camera body. I actually had to place the lens inside the E-mount opening because the back focal distance (from the rear of the lens to sensor plane) is just 6mm, and the flange focal distance of the E-mount is 18mm. In other words, the narrow end of the lens has to be placed 12mm inside the E-mount plane to get the proper focal distance.

As you can see, this lens is very soft. It is definitely not an everyday lens, it's more a unique art lens for macro and portrait work.

The depth of field is extremely shallow, just a few millimeters. Because of this I took multiple shots of this side-view at different distances, and blended two photos to get a reasonable result. One where the left eye and mouth are in focus, and one where the right eye is in focus.

I processed a soft HDR photo from a RAW exposure, carefully adjusted the curves, and desaturated the image. I welcome and appreciate constructive feedback.

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-- ƒ/0.75, 65 mm, 1/60 sec, ISO 200, Sony A7 II, Kowa 65mm f0.75 X-ray Lens, HDR, 1 RAW exposure, _DSC0403_4_hdr1sof1g.jpg
-- CC BY-NC-SA 4.0, © Peter Thoeny, Quality HDR Photography

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Photo taken @ G on 8 June 2019 (© PeterThoeny / Flickr)

Related tags :
 santa clara, san jose, silicon valley, san francisco bay, san francisco bay area, south bay, portrait, woman, face, smile, indoors, bokeh, blur, monochrome, black and white, sony, a7, a7 ii, a7mii, alpha7mii

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