|
|
 | | Author | |
|
| | Date | |
|
|
|
|
David Grant |
19:06 1 Sep 14 |
|
|
David Jade |
17:32 24 Sep 14 |
|
|
Ben Wilbur |
11:47 17 Sep 13 |
|
|
David Jade |
15:58 17 Sep 13 |
|
|
Ben Wilbur |
6:13 25 Sep 13 |
|
  |
HP5+ Reciprocity in Plotter |
|
Luigi Pasto |
10:55 28 May 13 |
 |
I recently made some very long exposures with HP5+ sheet film and found that the negatives were very underexposed. After some investigation I found that the Plotter reciprocity code for HP5+ in Xtol 1+1 is A7. I then compared the reciprocity charts in Plotter with the reported reciprocity characteristics of the film in Ilford's film specs publication. To my surprise they are VERY different. Indeed I found that HP5+ responds very much like a category D film, rather than as an A film. Has anyone else had similar experiences with the Plotter's suggested reciprocity table?
|
|
|
|
|
|
|
|
|
David Jade |
16:42 28 May 13 |
|
|
Luigi Pasto |
18:51 28 May 13 |
|
|
David Jade |
18:55 28 May 13 |
|
|
Luigi Pasto |
19:04 28 May 13 |
|
