Based on lens construction and a camera’s optical pathway, certain lenses may exhibit clipped bokeh at wide apertures as seen below:
This issue is most present when the aperture is wide open (lowest f stop / t stop). If you need to reduce or eliminate this characteristic, decrease the aperture (increase f stop / t stop).
Other Factors to Consider
- Different lenses exhibit different characteristics
- Some lenses do not exhibit this issue at all
- If you have the same lenses at different focal lengths, a wider lens may reduce the clipped bokeh
- For some lenses, this issue may only occur at close or infinity focus
- Placement of lights in the frame may affect the characteristic
- Cutoff bokeh can occur on other still photography and cinema cameras
- Cutoff bokeh can occur on both cropped and full frame sensors
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