ShivaYash Posted December 21, 2015 Share #1 Posted December 21, 2015 Advertisement (gone after registration) Hello I understand this film is very wide like all C-41 stuff. What do most expose it at? 250? Ta. Link to post Share on other sites More sharing options...
Advertisement Posted December 21, 2015 Posted December 21, 2015 Hi ShivaYash, Take a look here Ilford XP2 iso rating?. I'm sure you'll find what you were looking for!
piblondin Posted December 21, 2015 Share #2 Posted December 21, 2015 I don't think it's wide. I think this is a film that really needs to be overexposed. So, yes, 200-320 is optimal. Link to post Share on other sites More sharing options...
jip Posted December 21, 2015 Share #3 Posted December 21, 2015 I feel it has a exposure latitude of about 3 stops... ISO 400 is basically under exposed, ISO 200 is fine, ISO 100 is still okay with danger to the highlights, and at ISO 400 the shadows are in danger... If you want wide exposure latitude, use Portra for colour, or TRI-X or HP5+ Link to post Share on other sites More sharing options...
ShivaYash Posted December 21, 2015 Author Share #4 Posted December 21, 2015 Thanks to all. Link to post Share on other sites More sharing options...
spydrxx Posted December 22, 2015 Share #5 Posted December 22, 2015 I really preferred it exposed at about 320, but it does have plenty of latitude. One of the key issues in establishing the "ideal" ISO for a film with my cameras over the years, is to first know the accuracy of each shutter speed on each body...if they are within 1/3 stop of the stated dial speed, I'm fine, 1/6 stop I'm in heaven, as most manufacturers rely on a that as being their guideline. Once I know this info, when using a film for the first time, I can ascertain an accurate ISO for use with that body, knowing it will be developed according to my standardized practices (C41 films I still send out). Link to post Share on other sites More sharing options...
ShivaYash Posted December 22, 2015 Author Share #6 Posted December 22, 2015 I really preferred it exposed at about 320, but it does have plenty of latitude. One of the key issues in establishing the "ideal" ISO for a film with my cameras over the years, is to first know the accuracy of each shutter speed on each body...if they are within 1/3 stop of the stated dial speed, I'm fine, 1/6 stop I'm in heaven, as most manufacturers rely on a that as being their guideline. Once I know this info, when using a film for the first time, I can ascertain an accurate ISO for use with that body, knowing it will be developed according to my standardized practices (C41 films I still send out).Very interesting. My camera was just CLA'd and I saw myself the shutter speeds on the gauge. The only one that is slightly off was the second curtain on the 250th speed, otherwise they are now all spot on. Shall expose it at 320 and let you know how I get on. Ps. When I say slightly off I mean by 0.3 milliseconds, if I recall correctly. I'll drop the tech a line and see if he has a record. Can't be too careful heh ;-) Link to post Share on other sites More sharing options...
Fotoklaus Posted December 22, 2015 Share #7 Posted December 22, 2015 Advertisement (gone after registration) Ps. When I say slightly off I mean by 0.3 milliseconds, if I recall correctly. I'll drop the tech a line and see if he has a record. Can't be too careful heh ;-) So 1/1000 is one millisecond, and the curtain was 0,3 millisecond off at 1/250? What is this in f-stops? Now i understand, why you need the wide range of the XP-2 :-) Link to post Share on other sites More sharing options...
ShivaYash Posted December 22, 2015 Author Share #8 Posted December 22, 2015 Ha. Sorry I checked with him and clearly I'm talking shit. It was spot on and well within range. But yes, this is why film needs to be wide ;-) Link to post Share on other sites More sharing options...
Fotoklaus Posted December 22, 2015 Share #9 Posted December 22, 2015 Negs are too thin. Used Sunny16. But the curtain was 0,3 ms off. That´s the reason :-) Link to post Share on other sites More sharing options...
ShivaYash Posted December 22, 2015 Author Share #10 Posted December 22, 2015 Negs are too thin. Used Sunny16. But the curtain was 0,3 ms off. That´s the reason :-) From my tech: "Shutter is within specs but balance not as good as I would like you will not see this on film. Only on 250th." Link to post Share on other sites More sharing options...
spydrxx Posted December 22, 2015 Share #11 Posted December 22, 2015 One of the things I learned long ago regarding shutter speed accuracy was that very often shutter speeds varied with each click, and the important consideration was the average/mean or range of variance, looking for what I could count on as a good number. I usually do a test of 5-10 shots when I'm measuring a speed...looking for consistency within the range of a mfr's specifications. As indicated above I care less about the actual number in a given shot as long as it is within a normal range of variance - I can count on the tolerance characteristics of the film to compensate for the minor variations. I've had camera bodies which might have all but one speed well within specs, but one speed would be outside of the norm...once I knew that it was fine to shoot at any speed, just knowing where I had to apply compensation to achieve consistency. Link to post Share on other sites More sharing options...
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