- Joined
- Mar 18, 2017
- Messages
- 88
Hi all
so decided to find my E.I for Foma 200 and these are my results,
I made a couple of small mistakes wich I'm sure the purist will pick up ;-)
My Process ...
Towel on wall gray card stuck on with masking tape.
2 x Profoto heads soft brollies even light.
Series of exp at different iso 200-160-125-100 @ -2 stops from av spot metered, from towel around the card.
"in looking back I should have just opened up from the first expo instead of re-metering from the towel every time "
I then scanned negs with no adj all zeroed out. V800 with silverfast 8
then placed into Photoshop and took LAB readings from 11x11 pix average placed inside the squares at the same location.
from Ian's zone gradient tool I believe my new ISO/EI is 125?
my questions...
I can see texture at iso 200 but the numbers dont give me zone III but iso 125 gives me L31 & L35 from towel and L29 from Gray card , close enough for me.
Next is dev test I know I should NOT cut corners but if I was I would give this norm dev of 6 mins @ 20 deg as the tape is close to zone 9 or should I drop dev time a wee bit.
I know I'm going to get slammed for my last comment ;-)
FYI I will test dev time ;-)
thanks for your thoughts and inputs now to some shooting
Regards Leo
so decided to find my E.I for Foma 200 and these are my results,
I made a couple of small mistakes wich I'm sure the purist will pick up ;-)
My Process ...
Towel on wall gray card stuck on with masking tape.
2 x Profoto heads soft brollies even light.
Series of exp at different iso 200-160-125-100 @ -2 stops from av spot metered, from towel around the card.
"in looking back I should have just opened up from the first expo instead of re-metering from the towel every time "
I then scanned negs with no adj all zeroed out. V800 with silverfast 8
then placed into Photoshop and took LAB readings from 11x11 pix average placed inside the squares at the same location.
from Ian's zone gradient tool I believe my new ISO/EI is 125?
my questions...
I can see texture at iso 200 but the numbers dont give me zone III but iso 125 gives me L31 & L35 from towel and L29 from Gray card , close enough for me.
Next is dev test I know I should NOT cut corners but if I was I would give this norm dev of 6 mins @ 20 deg as the tape is close to zone 9 or should I drop dev time a wee bit.
I know I'm going to get slammed for my last comment ;-)
FYI I will test dev time ;-)
thanks for your thoughts and inputs now to some shooting
Regards Leo