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Pentax 645Z

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Pentax 645Z: Long Exposures

Very long exposures have traditionally been difficult for medium format cameras, so how does the 645Z perform?

1922 seconds (32 minutes)

Adobe Camera Raw 8.6 (250): ACR settings.

This 1922 seconds exposure (32 minutes) used a 6-stop neutral density filter which tends to deliver yellowish color; the color balance has been seasoned to taste. The image has been pushed by +0.4 stops on top of that very long exposure!

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Diglloyd Medium Format covers medium format camera systems, including the Hasselblad X1D and Fujifilm GFX.

These systems are hugely expensive, so make the right choice for your own needs (full frame vs medium format).

  • In-depth lens evaluations covering behaviors not likely to be found anywhere else, based on real-world field shooting.
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  • Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
  • Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.
Variants RGB, Red, Green, Blue, Gray Gamma 2.2 available in full article
1922 second exposure (32 minutes)
Pentax 645 + 90mm f/2.8

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