Thinking of doing some IR shots:

[n30_mkii]

Just wondering what sort of filter people would recommend, i know there are a few people who do IR shots on here?

Also i know IR will require a long exposure, and so what sort of ND would be required? i.e. what strength, number of stops?

 

[Irish_Tom]

The Hoya R72 seems to be the IR filter of choice but depending on the filter size you need for your lens they can get very expensive. Kenko do a similar filter for about half the price and the results seem to be similar if not just as good.

as for exposure length and aperture I would set the f/stop as you would normally depending on what you are trying to shoot then just compensate with exposure length.
The exposure length (and quality of the IR image) will depend on your camera.

You will need a tripod and probably a remote shutter-release.

Panzer

 

[wez130]

to add to what panzerbjorn said, you won't need any additional filters to the R72.

 

[A.N.Other]

... and a remote release isn't really needed, as you can just use the self-timer.

 

[Messiah Khan]

... and a remote release isn't really needed, as you can just use the self-timer.

No, the remote release is to enable you to keep it in bulb mode for over 30 seconds without having to keep you finger on the shutter. Ive had to do it before when I lost my remote shutter, and I can tell you that 5 minutes is a very long time to press a button and keep still

 

[A.N.Other]

No, the remote release is to enable you to keep it in bulb mode for over 30 seconds without having to keep you finger on the shutter. Ive had to do it before when I lost my remote shutter, and I can tell you that 5 minutes is a very long time to press a button and keep still

True, true. Though not all IRs take that long (do they?) - especially when using Nikons.

 

[Messiah Khan]

True, true. Though not all IRs take that long (do they?) - especially when using Nikons.

Nope, just when you have overly efficient hotmirrors... damn you D40X, damn you!

 

[Johnny|lucidcomposure]

Hoya R72 is a popular choice.

Vary your aperture. You wont require any additional filters and a ND is not needed with IR as they do not block out IR light.

I have experiernece with at ISO100
Nikon D50's, D70s Infrared (up to 9 second exposure times)
Canon 20D, 30D, 350D (up to 4 minutes)
Canon 350Di custom (up to 1/4000th)

 

[Amp34]

Seems they don't do them in 82mm though.

I'm thinking of doing some IR shots when/if I get a new lens.

 

[Johnny|lucidcomposure]

use a step up ring then. Unless your using it on film or FF Digital you wont see the clipping.

 

[Messiah Khan]

You can also get IR filters for Lee/Cokin systems. but make sure you camera is relatively sensitive to IR as there would be massive amounts of fogging if doing long exposures on a non light tight system.

 

[robertgilbert86]

The 'bay has 3rd party IR filters which filter exactly the same wavelengths, they are worth a look if you're finding the R72s a bit expensive...

 

[Amp34]

use a step up ring then. Unless your using it on film or FF Digital you wont see the clipping.

I did wonder about that, what size filter would I need to get no vignetting, something like a standard 72mm?

I remember someone on here also showing their home made system. (you?) with a smaller filter attached to a larger clear filter. I persume that would work too?

 

[Combat squirrel]

It does work however (im not sure about the D80) a lot of digital cams try to filter out IR making IR on digi cams abit hit and miss, best results would come from a 35mm camera with IR film in it, you got an old film camera around anywhere? Makes me larff u and me seem to think of the same things at the same time !! :S:S ,haha, am just gonna get me some IR film for my old Zenit EM.

 

[Johnny|lucidcomposure]

I did wonder about that, what size filter would I need to get no vignetting, something like a standard 72mm?

I remember someone on here also showing their home made system. (you?) with a smaller filter attached to a larger clear filter. I presume that would work too?

I am the creator of the R72 Infrared Blu tack mod yes. Its served me perfectly for ages. Once you understand how much a 1.5/6 crop of your lens is you will see why smaller filters make no negative effect in that particular setup.

I have been using a 58mm R72 filter on all my 77mm lenses for years now. Well up until I started shooting a modified IR camera.

 

[Phate]

I am the creator of the R72 Infrared Blu tack mod yes. Its served me perfectly for ages. Once you understand how much a 1.5/6 crop of your lens is you will see why smaller filters make no negative effect in that particular setup.

I have been using a 58mm R72 filter on all my 77mm lenses for years now. Well up until I started shooting a modified IR camera.

He's right, Fstop introduced me to the mod and it works perfectly Saved me a bundle on buying a 77mm R72 Hoya, just tacked my 58mm on and job's a good'un!

 

[Amp34]

So how much diameter is actually removed by the crop factor?

It may be worth me just going for a 77mm and stepdown ring, that way at least I could use the IR filter on another lens instead of buying a (i'm guessing bigger than 52mm) filter and an 82mm plain filter to put it on?