How to create pure white background?

Sometimes I want to shoot some objects with a pure white background. To do
this I use a large softbox as the background and adjust the intensity to
just overexpose.

An undesirable effect is a hazy look around the edges of the foreground
object. Perhaps it is some sort of lense aberration or sensor effect.

In some movies, you can see this effect when they put an actor in front of a
strong backlight. The white light seems to bleed around the edge of the
actor.

What is the correct way then, to shoot objects with white background without
this effect?

In article EzkZj.25483$sX5.5248@trnddc02, peter
wrote:

Sometimes I want to shoot some objects with a pure white background. To do
this I use a large softbox as the background and adjust the intensity to
just overexpose.

Not sure in this digital age, but in the film days, you used white
seamless paper, lit it evenly, and made the background 2 stops brighter
than the subject. If you went less than 2 stops, it would be some shade
of gray - more than 2 stops and it would be burned out.

In article EzkZj.25483$sX5.5248@trnddc02, "peter"
wrote:

Sometimes I want to shoot some objects with a pure white background. To do
this I use a large softbox as the background and adjust the intensity to
just overexpose.

An undesirable effect is a hazy look around the edges of the foreground
object. Perhaps it is some sort of lense aberration or sensor effect.

In some movies, you can see this effect when they put an actor in front of a
strong backlight. The white light seems to bleed around the edge of the
actor.

What is the correct way then, to shoot objects with white background without
this effect?

You could try the post processing effect my using the Magic Wand to
highlight the background, feather, change the Background Layer to Layer
0, then press Delete and Save or use the Paint bucket with White
selected.