5 replies to this topic

[Chris Green]

I've just established that my D70 is sensitive, at least to some extent, to IR light - when I take photos of a TV remote pointing at the camera with one of its buttons pressed, I can see the red light being emitted on playback of the results. Having then been spurred on to find out what I'd need to take 'proper' IR pictures, I find that something called a Wratten 89B filter seems to be what's wanted (also seems to be classified R-72 by Hoya).

I rather imagine these all but stop any real visible light getting through to the viewfinder, so aiming the camera is going to be a case of previewing the shot set up on a tripod before putting the filter onto the camera - am I right?

Also, what about exposure settings? Is the in-built meter going to be any good at all?

Incidentally, apologies if this is a subject done to death elsewhere - maybe I'm not using the search facility correctly.

[MRT]

I've just established that my D70 is sensitive, at least to some extent, to IR light - when I take photos of a TV remote pointing at the camera with one of its buttons pressed, I can see the red light being emitted on playback of the results. Having then been spurred on to find out what I'd need to take 'proper' IR pictures, I find that something called a Wratten 89B filter seems to be what's wanted (also seems to be classified R-72 by Hoya).

I rather imagine these all but stop any real visible light getting through to the viewfinder, so aiming the camera is going to be a case of previewing the shot set up on a tripod before putting the filter onto the camera - am I right?

Also, what about exposure settings? Is the in-built meter going to be any good at all?

Incidentally, apologies if this is a subject done to death elsewhere - maybe I'm not using the search facility correctly.

I have been led to belive that shooting IR is almost impossible with modern DSLR,s and digicams as they have high power IR blocking filters in order to reduce moire effects which results in next to no IR getting through

[Chris Green]

Well, yes, that's what I'd have thought too, but I've just read two articles on the web, having Googled 'D70 Infra-red' which even show some results, which suggests that the IR filter in a D70 is only as effective as it needs to be, rather than totally effective. My own tests with a TV remote control tend to bear this theory out, since the camera CAN see the light coming from it, even when I can't.

However neither article was particularly specific about whether you can see anything through the viewfinder once the Wratten 89B filter is in place. In fact, I can't even imagine what an infra-red 'pass' filter even looks like. Maybe it's very dark red, like the front of a TV remote control

I was just hoping to come across someone here who'd done it before paying out £60 (!) for a filter

[Tombob]

I have always wanted to have a pop at infrared photography with my canon 350d. But the filters seem too expensive (althoguh i keep checking ebay from time to time, they are always smaller than i require).

I have read that focusing and auto focus is a big problem when using these filters, so i presume it may be benificial to focus first the appky the filter.

About the metering, i dont know, imagine it would be different to the cameras judgment. Id just have a few test exposures first.

Have used a photoshop action by David Jaseck before to convert an image to IR. The link for the action is here:
http://www.geocities...eJaseckIR21.zip


tom

[Chris Green]

I have always wanted to have a pop at infrared photography with my canon 350d. But the filters seem too expensive (althoguh i keep checking ebay from time to time, they are always smaller than i require).

Yes, that was at the forefront of my mind too. One way I did think of keeping the cost down, in case it doesn't work, was just to buy the square Cokin filter, hold it to the camera lens to see what results I get, and then if it does work, I'd buy the proper Cokin filter holder and thread adapter for the 67mm filter thread in the Nikon D70.

[madhale]

I have been led to belive that shooting IR is almost impossible with modern DSLR,s and digicams as they have high power IR blocking filters in order to reduce moire effects which results in next to no IR getting through

I use the pentax *istD and have had a great time shooting infrared... you can check out my gallery for a few samples.