If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Efke KB25 + pyro
I'm testing Efke KB 25 + pyro, esposed at 12 iso, sometime I need long
expositions time, but I'haven't found data for reprocity failure of this Film. In your experience the data of APX 25 is similar ? Regards Lorenzo |
#2
|
|||
|
|||
Efke KB25 + pyro
In article ,
"Fëdor Pavlovic'" wrote: I'm testing Efke KB 25 + pyro, esposed at 12 iso, sometime I need long expositions time, but I'haven't found data for reprocity failure of this Film. In your experience the data of APX 25 is similar ? Regards Lorenzo Define long exposure time, in normal outdoor applications I found the film to perform very well at 25 ASA/ISO using Pyro,....no adjustment for reciprocity within 1to 2 second exposure time. -- LF website http://members.bellatlantic.net/~gblank |
#3
|
|||
|
|||
Efke KB25 + pyro
"Gregory W Blank" ha scritto nel messaggio ... In article , "Fëdor Pavlovic'" wrote: I'm testing Efke KB 25 + pyro, esposed at 12 iso, sometime I need long expositions time, but I'haven't found data for reprocity failure of this Film. In your experience the data of APX 25 is similar ? Regards Lorenzo Define long exposure time, in normal outdoor applications I found the film to perform very well at 25 ASA/ISO using Pyro,....no adjustment for reciprocity within 1to 2 second exposure time. ok, but in a winter dark day (cloudy), 12 ISO at F22 (macro using Hasselbad planar 80 + 16 mm tube) and green fliter I need 10-15 seconds. |
#4
|
|||
|
|||
Efke KB25 + pyro
In article ,
"Fëdor Pavlovic'" wrote: ok, but in a winter dark day (cloudy), 12 ISO at F22 (macro using Hasselbad planar 80 + 16 mm tube) and green fliter I need 10-15 seconds. My rule is that for such an exposure to try doubling the exposure. -- LF website http://members.bellatlantic.net/~gblank |
#5
|
|||
|
|||
Efke KB25 + pyro
Reciprocity?
"Fëdor Pavlovic'" wrote in message ... "Gregory W Blank" ha scritto nel messaggio ... In article , "Fëdor Pavlovic'" wrote: I'm testing Efke KB 25 + pyro, esposed at 12 iso, sometime I need long expositions time, but I'haven't found data for reprocity failure of this Film. In your experience the data of APX 25 is similar ? Regards Lorenzo Define long exposure time, in normal outdoor applications I found the film to perform very well at 25 ASA/ISO using Pyro,....no adjustment for reciprocity within 1to 2 second exposure time. ok, but in a winter dark day (cloudy), 12 ISO at F22 (macro using Hasselbad planar 80 + 16 mm tube) and green fliter I need 10-15 seconds. |
Thread Tools | |
Display Modes | |
|
|