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Author Topic: Fuji GFX 50S -real world experience  (Read 11102 times)

armand

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Re: Fuji GFX 50S -real world experience
« Reply #120 on: March 16, 2017, 10:57:14 AM »

Some interesting observation on bokeh difference: leaf shutter vs focal Plane shutter..

https://photographylife.com/fuji-gfx-50s-vs-hasselblad-x1d-50c/#more-141571

Even wide open the unsharp highlights are not round with a leaf shutter

It's interesting to see the difference (or lack of) between the X1D and the X-T2 portraits, at least at small sizes.

Jim Kasson

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Re: Fuji GFX 50S -real world experience
« Reply #121 on: March 16, 2017, 11:28:12 AM »

Some interesting observation on bokeh difference: leaf shutter vs focal Plane shutter..

https://photographylife.com/fuji-gfx-50s-vs-hasselblad-x1d-50c/#more-141571

Even wide open the unsharp highlights are not round with a leaf shutter

With continuous lighting, I would expect the bokeh to vary with shutter speed. For slow enough shutter speeds, the bokeh should be similar to a FP shutter. For every lens and every wide-ish f-stop, here is probably some shutter speed that provides a psudo-apodization. Anybody tested for this?

Jim

scyth

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Re: Fuji GFX 50S -real world experience
« Reply #122 on: March 17, 2017, 08:37:55 AM »

With continuous lighting, I would expect the bokeh to vary with shutter speed. For slow enough shutter speeds, the bokeh should be similar to a FP shutter. For every lens and every wide-ish f-stop, here is probably some shutter speed that provides a psudo-apodization. Anybody tested for this?

Jim

so exposure (sensor saturation) is noticeably different then for a given fixed aperture and exposure time between shutter modes... how nice
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BartvanderWolf

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Re: Fuji GFX 50S -real world experience
« Reply #123 on: March 17, 2017, 08:51:50 AM »

so exposure (sensor saturation) is noticeably different then for a given fixed aperture and exposure time between shutter modes... how nice

No, that's not what Jim is suggesting. It is the different shape of the shutter blades and the aperture blades that are expected to change the character of the bokeh, depending on exposure time.

Cheers,
Bart
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Jim Kasson

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Re: Fuji GFX 50S -real world experience
« Reply #124 on: March 17, 2017, 11:05:29 AM »

No, that's not what Jim is suggesting. It is the different shape of the shutter blades and the aperture blades that are expected to change the character of the bokeh, depending on exposure time.

What Bart said. In a apodized lens, the center rays are less attenuated than the peripheral ones, giving, effectively, a feathered edge to the aperture. In a leaf-shutter lens, the center rays hit the sensor for a greater length of time than the peripheral ones. At some shutter speed and aperture, the effect might be similar.

By the way, on the Sony a7RII, the bokeh of the mechanical and EFCS shutters are slightly different at some apertures and shutter speeds because the shadow of the mechanical shutter is somewhat diffuse because it lies in a different plane than the sensor surface.

Jim
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