IR filters for canon 300D

Hello

 

Anyone has any experience with Infrared photography with canon 300D &

17-40 f4 L? Any recommended filters?

 

Thanks

Not filters, but I've used a 300D and "Dave's IR Action" from <a href="http://www.atncentral.com/download.htm">http://www.atncentral.com/download.htm</a> to very good effect.

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Going the photoshop route is kinda cheating, I know, but thought I'd mention it anyways :)

Dhiren,

 

Most digital cameras, including the 300D, have built-in low-pass/IR filters (blocking out infrared) making them largely unsuited to IR photography. There are several previous threads on Photo.net pertaining to this topic... have you searched?

Yes, Rob that's the first thing I do before posting a question and none were related to canon 300D.

 

Thanks for the info though !

I have never tried, but I know there is a company you can send your DR to alter it for IR photograhy. Another way is to use IR filters. This article talks about it: http://www.naturfotograf.com/UV_IR_rev00.html

and the good producers of IR filters are Harrison & Harrison Optical Engineers, Inc. Here is the quote from my recent querry for 77 mm IR filters:

"The IR filters we manufacture are the 89-B, 88-A and the 87. All three filters in 77mm are $59.45 each. To order, please contact the factory direct at the numbers below.

 

Harrison & Harrison Optical Engineers, Inc.

1835 Thunderbolt Drive, Unit "E"

Porterville, CA 93257-9300

Phone: +(559) 782-0121

Toll free within the USA only: 1-(877) 213-6787

FAX: +(559) 782-0824

Office & factory hours: 7:00am to 3:00pm, Monday through Friday

"75 YEARS OF PROGRESS IN PHOTOGRAPHY THROUGH FILTERS."

1929 - 2004"

I have read many positive articles about their IR filters.

As I said, i have not tried any of these solutions. Let me know if and what worked for you.

Cheers, Bojan

I vote for Harrison and Harrison - bought 77mm 87 filter from them last year.

I think 300d should be similarly sensitive to IR as my 10d, so with 87 filter you are looking at exposures of 1-2 seconds at iso 800 and large apertures.

There is still enough IR getting through the sensor filters to allow IR photography. The IR sensor filtering is essential for visual photography. I use the 87 filter and the Hoya R72 Filter on the 10D and I believe the sensor sandwich is the same on the 300D. The R72 or the 88b allows a small amount of visual light through and thereby helps add a small addition amount of image sharpness. You will need to use a tripod and exposures in the several second range. Auto focusing will not work through these filters so you have to go manual with the filter off and you will have to focus short of the object because IR wave length focus closer. Use some bracketing until you find the amount of focus compensation. For example, on a particular lens to focus on infinity will require you to set the lens at maybe 50-100 feet. You will also need a good deal of post processing sharpening and levels and/or contrast adjustment. IR on windy days will be disappointing because vegetation will move during the long exposure creating blur. Don't expect visually sharp images in IR because softness is a reality with the long wavelengths of IR.

Ted

Also check the following forum for Canon Rebel and read about the "hot spot" issue: http://groups.yahoo.com/group/Infrared_Photography/

Ted

Concerning visually unsharp images - that's in the eye of beholder. I have printed very nice IR (with 87 filter) images at 16x20. But for this I was using sony 707.

I havea feeling that I'll buy a used one on E*bay and modify it strictly for IR shooting...

I also have a Digital rebel (300D) and I have used the Hoya R72 filter. It works really fine. I must say that the AF still works but, as the filter is quite dark, you will see practically nothing, so it is best to compose first put the lense after. Metering is quite a problem. I tried overexposinig two steps with the camera metering, but it didn?t work. You will have to try longer exposures.

Victor could you show some sample ?

 

Thanks

Having done some tests, I found a hoya r72 (wratten 89b equivalent) to give good

exposures 4-5 stops above the indicated exposure under daylight conditions. The

cokin 007 is also an 89b and should produce similar results.

 

The higher reflectance of the sensor as compared to film can cause flare in the center

of the image with certain lenses. I haven't tested the 17-40 f4L for this effect,

though zooms generally seem more suceptable.

here is an example of an IR shot that was taken with 1Ds/converted in Photoshop

 

Greg<div></div>

What's funny is that you've exposed the groom's cheap tux selection. Cotton or wool

would show as white. But hey, who cares. It's probably a rental.