Archived posting to the Leica Users Group, 2015/09/11
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On Sep 11, 2015, at 4:26 PM, Ken Carney wrote: > Didn't know that (obviously). With the Fuji in bright sun, it is 1/15 and > 2.8, ISO 2000. > > Thanks, > > Ken > > On 9/11/2015 2:18 PM, George Lottermoser wrote: >> On Sep 11, 2015, at 2:09 PM, Ken Carney wrote: >> >>> Very nice. That must be a pretty long exposure with that steep a cut. >>> >>> Ken >>> >>> On 9/11/2015 10:36 AM, George Lottermoser wrote: >>>> C & C always welcome and appreciated >>>> >>>> <http://www.imagist.com/blog/?p=10086> >> Remember that the M8 is VERY infrared sensitive Ken. >> These exposures are all hand held >> 1/4 to 1/30 of a second >> f:2.8 to f:4 >> with the camera set at ISO 320 >> in the late afternoon >> many in shade >> >> When I put the same filter on the M (240) >> and set the camera at ISO 1250 >> I need a 1/2 sec at f:2 >> and the shadows are seriously underexposed; >> because the sensor has an IR cutoff filter over it. >> >> As do the Fuji sensors. >> >> So the M8 is really quite a different IR beast >> it was [inadvertantly] built as an IR body. Yes. And those specs you're shooting with are with a 720nm cut off point; if I understand your kit correctly; which is actually allowing more IR light in then my 093 and its 830nm. All very fascinating; and why many who want to do IR digital work have the IR cut off filter removed from the sensor of their "IR camera." Regards, George Lottermoser http://www.imagist.com http://www.imagist.com/blog http://www.linkedin.com/in/imagist