[Leica] IMGs: Friday: Look at flowers with “invisible” light

[Ken Carney]

My first digital camera was an Olympus C2020 (1994? earlier?).  I read 
that it transmitted IR so I put an 810nm filter on it.  Here are a 
couple of shots with it:
http://gallery.leica-users.org/v/kcarney/111002+042.jpg.html
http://gallery.leica-users.org/v/kcarney/Trees_+infrared.jpg.html

I liked the results, but it was a two megapixel camera (1600 x 1200).  
Lifepixel.com can convert one of my Fuji XE bodies to 720nm IR for $350, 
not a bad deal.  I'll have to check, but I think the benefit is 
hand-holding and smaller apertures.  As you say, fascinating, especially 
when the summer light is bad for regular photography.

Ken

On 9/11/2015 4:45 PM, George Lottermoser wrote:
> 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
>
>
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