| 147 |
|
the cursor is used to pick a specific image |
| 148 |
|
location for normalization. |
| 149 |
|
.TP |
| 150 |
+ |
.BI focus " [distance]" |
| 151 |
+ |
Set focus distance for depth-of-field sampling. |
| 152 |
+ |
If a distance in world coordinates is absent, then the cursor |
| 153 |
+ |
is used to choose a point in the scene on which to focus. |
| 154 |
+ |
(The focus distance setting does not affect rendering in |
| 155 |
+ |
.I rview, |
| 156 |
+ |
but can be used in |
| 157 |
+ |
.I rpict |
| 158 |
+ |
with the |
| 159 |
+ |
.I \-pd |
| 160 |
+ |
option to simulate depth-of-field on views saved from |
| 161 |
+ |
.I rview.) |
| 162 |
+ |
.TP |
| 163 |
|
.BI frame " [ xmin ymin xmax ymax ]" |
| 164 |
|
Set frame for refinement. |
| 165 |
|
If coordinates are absent, the cursor is used to |
