Gavjenks
TPF Noob!
- Joined
- May 9, 2013
- Messages
- 2,976
- Reaction score
- 588
- Location
- Iowa City, IA
- Can others edit my Photos
- Photos OK to edit
I'm not seeming to find one, but I would like to have better knowledge and prediction of this aspect of my photography, ideally avoiding doing a bunch of real experiments myself if possible.
Note: this is not DOF I'm asking about. It's partially DOF, but also partially focal length (makes the exact same bokeh ball in the same DOF larger if longer FL), and distance of the point source compared to your subject. But I'm having trouble figuring out in exactly what relationship.
In other words, I want to be able to predict from a set of parameters about a point source of light how large a bokeh ball from it will be on my sensor ("how many pixels" roughly)
I don't want to calculate it in the field or anything, but it would be helpful in choosing locations or lenses to bring with me to a shoot.
Note: this is not DOF I'm asking about. It's partially DOF, but also partially focal length (makes the exact same bokeh ball in the same DOF larger if longer FL), and distance of the point source compared to your subject. But I'm having trouble figuring out in exactly what relationship.
In other words, I want to be able to predict from a set of parameters about a point source of light how large a bokeh ball from it will be on my sensor ("how many pixels" roughly)
I don't want to calculate it in the field or anything, but it would be helpful in choosing locations or lenses to bring with me to a shoot.