IR Filter

trishw78

I seem to be having trouble with an ir filter I was wondering as someone on a different forum said I'd have to get the ir blocking filter removed is this true and if so has anyone gotten it done and how much did it cost and where did you get it done. Oh and I do understand the warrenty would probably be void.

Borderfox

I have seen some of the people on this forum using IR filters on un-modified cameras with great success.

helios

Borderfox wrote: »

I have seen some of the people on this forum using IR filters on un-modified cameras with great success.

I would be one of them. I've used the same Hoya R72 on a 400D and a Canon P&S without any problem. Check my Flickr for some examples, feel free to PM me if you have any specific questions

trishw78

Thanks PM sent...

Paddy@CIRL

Had a quick look at these before and they were hilariously expensive, have prices changed much ?

Sebzy

trishw78 wrote: »

I seem to be having trouble with an ir filter I was wondering as someone on a different forum said I'd have to get the ir blocking filter removed is this true and if so has anyone gotten it done and how much did it cost and where did you get it done. Oh and I do understand the warrenty would probably be void.

A hoya R72 will set you back about 50Euro. What you loose by using this filter is speed you might be talking about 10 - 360 second exposures. When you get your cam modded which voids the warranty it acts just like normal with fast shutter speeds.

Most conversions are done by the camera owner and at your own risk.
you could follow a guide such as this
http://www.lifepixel.com/ir-tutorials/canon-rebel-xt-300d-digital-infrared-conversion-instructions.htm

I'm in the process of converting my E300 with a 980nm IR filter but am having slight problems sourcing a diamond cutter for the IR glass.

Hugh_C

trishw78 wrote: »

I seem to be having trouble with an ir filter I was wondering as someone on a different forum said I'd have to get the ir blocking filter removed is this true and if so has anyone gotten it done and how much did it cost and where did you get it done. Oh and I do understand the warrenty would probably be void.

Hi Trish, what filter and what camera are you sing?

I've been using a Hoya R72 successfully with a Nikon D70 and Canon P&S.

A quick test is to point a TV remote at your camera (no filter necessary) and press any button on it while taking a picture. If you see a white dot in the picture like this, you should be in business:



You could get the IR mod thing done but it'd void your warranty and your camera wouldn't be useable for anything else. ANd it's expensive and can't be done here as far as I'm aware.

trishw78

My Camera is a Canon 40D and I wouldn't be converting it so soon if ever. The filter is a Tiffen 87 I think it's actually too dark. That might be the problem. Might end up using it on my film camera instead and investing in the Hoya. Which at the moment is woking out at about €40 incl. postage.

sasar

I'm using kood R72 filter, got in on ebay for some 20 euros.
In a bright sunny day on my 400d I need around 20-30 seconds, which gives that great movement effect.
Some of my pics can be seen here

Fenster

sasar: Definitely some nice infrared there.

Trish: There are different kinds of infrared filters that let through different parts of the spectrum. The Tiffen #87 operates at a deeper part of the spectrum than a Hoya R72, which operates closer to visible light. There's a brief comparison of the two filters here:

http://www.wrotniak.net/photo/infrared/e300.html

To sum up the practical difference, you need a much longer exposure (up to ten times longer) with a Tiffen #87 than with a Hoya R72. If you don't like it, I might be interested in a swap for an R72, which is more usable. PM me please.

My own infrared gallery:

http://www.flickr.com/photos/bhalash/sets/72157594198687626/

trishw78

I was thinking 30 seconds was WAY to short with the tiffen filter fingers crossed that Saturday is sunnier 'cause I'll be out trying it. I had been trying around the 2 min mark with a bit my sucess.

Fenster if only I seen your post 10mins ago just bought a Hoya from ebay. Thanks for the swamp offer anyhow.

It was actually Lanky_larry's and Helios work that inspired my to try it out.

helios

trishw78 wrote: »

It was actually Lanky_larry's and Helios work that inspired my to try it out.

Aww.... bless You won't regret it! Just make sure you have a remote release and you're all set! Maybe you, Lanky, and I should arrange for an IR day out! w00t!!

trishw78

Sounds like fun

Hugh_C

IR is fun ...

Sebzy

You can get nice results hand-held with the R72


Shot raw and pushed 2EV in ACR

bovril

trishw78 wrote: »

It was actually Lanky_larry's and Helios work that inspired my to try it out.

I never ever thought someone would ever say that in a sentence about me and my IR work. I haven't really done too much. It was Fenster who inspired me. He has done a lot more than me and his is way better too. I'd love to be able to get more shots to the same standard as his in the future.

As for what I use it's the R72, 50mm and 350D or 40D. You should set your 40D to liveview with the filter on and you should be able to make out the scene in the viewer. It does make composition a bit easier. I recently ordered a R72to go on my 17-85 from a so I thought reputable ebay dealer but it's a month and it hasn't arrived. I don't think I'll have it for my hols .

Anyways as you can ask me any questions you have and I can try and answer them.

trishw78

I remember either you or someone else saying about using the liveview, but unfortunately it wa way to dark on Sunday to see anything. fingers crossed for this weekend.

EDIT

bovril wrote:

I never ever thought someone would ever say that in a sentence about me and my IR work.

I thought that was what everyone was here for to get inspired by everyone else. (Don't want to give anyone a big head like.

bovril

trishw78 wrote: »

I remember either you or someone else saying about using the liveview, but unfortunately it wa way to dark on Sunday to see anything. fingers crossed for this weekend. .

Seb said it originally ages back and I tried it out with my 40D towards the end of last year.

trishw78 wrote: »

I thought that was what everyone was here for to get inspired by everyone else. (Don't want to give anyone a big head like.

Indeed, plenty of talent around here to get inspired by.

Thirdfox

I just bought a Kood R72 infra-red filter on ebay for 22 euro - wondering do any of you guys have a problem with the infra-red focus shift?

Hugh_C

The received wisdom is to bracket the stop AND focus for best results. What I generally do is to focus at infinity and then back it off a smidge[1]. IR focusses a little closer.

[1] smidge: small amount

Thirdfox

Thanks. I'll post up some photos once I get the filter.

bovril

Thirdfox wrote: »

I just bought a Kood R72 infra-red filter on ebay for 22 euro - wondering do any of you guys have a problem with the infra-red focus shift?

What camera body are you using? 40D with liveview helps with focusing.

Thirdfox

Heh - I'll be using the reverse of what you got... a D40 - so no live-view for me. One of my old manual lenses is marked with an infra-red focusing dot though (my 50mm prime).

bovril

Best to bracket focus as Hugh C said, that's what I used to do.

Monasette

trishw78 wrote: »

My Camera is a Canon 40D and I wouldn't be converting it so soon if ever. The filter is a Tiffen 87 I think it's actually too dark. That might be the problem. Might end up using it on my film camera instead and investing in the Hoya. Which at the moment is woking out at about €40 incl. postage.

I took some pictures over the weekend using a Tiffen 87 on a Canon 5D. I think the exposures were between 10 and 20 seconds for ISO400 at f10 (some pictures required up to 30secs depending on the light). I did have a problem with some shots at the start ( a band of 'fog'' across the image) but I think I might know what caused that.

The later pictures turned out all right, though. I've have a Hoya R72 too - I find I need a tripod to use either filter - I usually go for f8 to f11 and a low ISO which requires long exposure times.

I'll post some examples later in the week when I get a chance.

trishw78

I used the Tiffen on Sunday as it was the Sunniest day during the weekend. The exposures weren't as long as I thought they'd be. but I got that fogy blue band on my exposures which I found out later could've been light leaking in the viewfinder. I also used the Hoya, but since I had over exposed on a few. and my composition wasn't that interesting I won't be posting my results quite yet.