IR in the gorge

[Amocholes]

I spent last week at Hocking Hills State Park in Ohio. It is a beautiful gorge with several waterfalls. I took almost 500 photos including some with an IR filter. These all used a 35mm 1.8 prime lens on a tripod. They were 30-45 second exposures.

1. 2.3.4.5.

 

[Light Guru]

They are all WAY WAY WAY to dark. The contrast is extremely low, there is not a point of white in any of the images.

 

[Amocholes]

You're right. I played around with them and was able to bring the contrast up. I'll upload them later, after I get off work.

 

[petrochemist]

Cameras auto exposure are often way off for IR work. What camera were you using?

Obviously it's not a converted one, but IR response from standard models varies wildly, My old K100d has enough response to handhold in good conditions whilst many others hardly see any IR.Many modern models will block IR so effectively that they'll just record images from the trace visual light leaking through the filter. I can (just) see bright items through my '850nm' filter, and standard 720nm filters let through more still.

FWIW at shady gorge is not likely to have a great deal of IR available, making your job even more difficult.

 

[bribrius]

i cant see anything.

 

[Amocholes]

I have a Nikon D3000 That I bought in 2009. It may be time for a new body. I find that in the auto setting, things look over-exposed. I've tried compensating at -1 EV with some success.

Here are the brighter versions of the IRs.

1.2.3.4.5.