How do I get bokeh effect on 50mm f1.8 when the sweet spot is f5.6?

To achieve a pleasing bokeh effect with a 50mm f/1.8 lens, even though the sharpest images might be obtained at apertures like f/5.6, you can follow these guidelines:

Use the Wide Aperture

• The bokeh effect is most pronounced when using the lens at its widest aperture, which in this case is f/1.8. This setting will help in creating a creamy, blurred background that separates the subject from the background234.

Balance Depth of Field

• While shooting at f/1.8 can create a beautiful bokeh, it also results in a very narrow depth of field. To avoid issues like only one eye being in focus, consider stopping down to around f/2.8 or f/3.5. This will still provide a good bokeh effect while increasing the depth of field slightly, making it easier to keep more of your subject in focus3.

Composition and Distance

• The bokeh effect is also influenced by the distance between the subject and the background. Ensure that the background is far enough from the subject to create a noticeable blur. Using the lens's ability to defocus the background effectively, especially in scenarios like portraits or street photography, can enhance the bokeh effect23.

Avoiding Busy Bokeh

• The Canon 50mm f/1.8 STM can sometimes produce a "busy" or "jittery" bokeh, especially when the background contains detailed elements. To minimize this, try to use simpler backgrounds or adjust your composition to avoid busy areas4.

Summary

• Use the lens at its widest aperture (f/1.8) for the most pronounced bokeh effect, but be mindful of the narrow depth of field.
• If necessary, stop down to f/2.8 or f/3.5 to balance bokeh with a slightly deeper depth of field.
• Pay attention to the distance between the subject and the background to maximize the bokeh effect.
• Choose backgrounds that will not produce a distracting or busy bokeh.