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Leaf Shutter Speed Limits
As with the Fujifilm X100 and Sigma DP Merrill and Ricoh GR, the Sony RX1 / RX1R limits its top shutter speed at wide apertures, due to its in-lens leaf shutter.
While a leaf shutter is highly desirable for flash sync as well as much lower vibration over a focal plane shutter, a leaf shutter cannot open and close fast enough to cover the wider apertures. The shutter speed range restrictions are as follows:
- f/2 - f/3.5 (brighter than f/4): maximum 1/2000 sec shutter speed.
- f/4: maximum 1/3200 sec shutter speed.
- f/5.6 - f/16: 1/4000 second (full speed).
The issue here is that in bright conditions, one effectively cannot use f/2 and f/2.8 (image could be blown out, too bright). The workaround is to mount a polarizer or neutral density filter to reduce the brightness.
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