[Leica] IR photography with M8 and Elamarit-M 24/2.8

[Henning Wulff]

The B+W 093's work just fine, but the exposure is a couple of stops (depending on subject) longer than with the 092 or Leica's IR. Personally, the filters I prefer for IR on the M8 are the 715's or 720's. My most used are Helipan 715's. If you buy cheaper ones, the cutoff indicated often bears only a passing resemblance to what B+W or Heliopan would label them, and they vary a lot.

Henning Wulff
hjwulff at gmail.com




On 2015-11-14, at 8:21 PM, Howard Ritter <hlritter at bex.net> wrote:

> Right, and I did get the IR cut filters from Leica. But there is a native IR filter over the M8’s sensor, even if an inadequate one, and my reading indicates that as the wavelength increases, its effectiveness improves so that it’s reasonably effective for the deeper IR. In fact, one source indicated that there’s so little overlap between the low-end tail of the B+W 093’s passband and the high-end tail of the M8’s that it’s questionable whether the 093 would even be useable. But the same article included an attractive hand-held M8 image done with the 093, so apparently, at least in some situations, there’s enough.
> 
> —howard
> 
> 
>> On Nov 14, 2015, at 9:15 PM, George Lottermoser <george.imagist at icloud.com> wrote:
>> 
>> I believe the M8 IR filtration qualifies as minimal (to virtually non existent);
>> which is why the M8 requires IR/UV cut filters "in front" of our lenses to achieve accurate color.
>> 
>> So. The M8 already qualifies as extremely IR sensitive;
>> as I understand it.
>> 
>> a note off the iPad, George
>> 
>> On Nov 12, 2015, at 10:34 AM, Howard Ritter <hlritter at bex.net> wrote:
>> 
>>> I thought I had recalled that filter nomenclature from your last post, George. If one wants to use the M8 as a dedicated IR camera, is it possible/worthwhile to have the sensor IR filter removed?
>> 
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information