I was told my camera has a pretty aggressive filter (Canon Rebel). I really don't want to remove the sensor.
So what would be the best way to have succesful IR photos..... or what would be a great camera to use just for this?
6:05PM, 31 October PDT
You can find more information on our web, so please take a look.
I have a Rebel XT and it has an aggressive IR filter as well.
However aggressive the filter is, it will still let in some IR. So, I just use a tripod and about a +6-stop exposure thru a Hoya R72 filter and I get very acceptable results.
There are firms out there that will remove your filter, and there are a couple of sites that offer instructions on how to do it yourself. Me, I want to take normal pictures most of the time, so the Hoya and a tripod are my tools of choice.
ages ago
Yeah...I'm the same way.
I just ordered the Hoya R72 IR filter
so once I receive it......I guess the best thing to do is experiment!
+6 stop eh? I'll have to remember that!
Thanks!
Nicole
ages ago
Nicole, I've been test Rebel XT with Hoya and Cokin 007
best is Cokin 007, i could take shot on daylight with 1 seconds - iso 400
but friend aalready test with Ilford SFX which more thin and better, Hoya R72 is the Darkest
here's some sample shot using Rebel XT:
ages ago
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ages ago
I'm trying to use my Digital Rebel now for IR. Right now my results are mediocre using Wrattan gel filters 87 and 89B. I'll have to see about the Cokin 007.
Which of those photos are taken with which filter? All with the Cokin 007?
Originally posted ages ago.
ratbert edited this topic ages ago.
@Ratbert, TTL exposure meters don't have the same IR filter as the CCD so they typically lead to severe under exposure in IR. Try pushing the exposure compensation to +5 or what ever the max is for the Digtal Rebel. The Digital Rebel does have an agressive hot mirror according to Gisleh's data. You may even need to try manual exposures settings of +10 EV or more. The wratten 89B should be close to the Hoya 72. The Cokin 007 looks like a good match for the Rebel. Good luck.
Originally posted ages ago.
starfish235 edited this topic ages ago.
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I'm not really relying on the TTL exposure meter at all. I pretty much try something like 20" exposure, +2EV, manual focus, ISO 400, *click*. Then see what it looks like and adjust from there.
+10 EV? As fas as I can tell, the digital rebel only compensates up to +2. I even checked the manual. If there's something I'm missing, please let me know!
My G2 takes pretty good images, but it's manual focus is terrible.
ages ago
No, you're not missing anything. The +10 EV has to be done with a manual exposure. Use the light meter to get an estimate of the exposure and then crank it up +5, +6, ... up to +10 EV by setting both the aperture and shutter speed manually. You may even have to use bulb setting a stopwatch to time the exposures. Try a few different setting to calibrate your light meter. Each filter requires it's own calibration.
Originally posted ages ago.
starfish235 edited this topic ages ago.
I tried that on my xmas tree and it did take the picture in 20 seconds as opposed to 90 seconds. I'll have to wait until the weekend to try it in daylight. :( But I think I'm still stuck with the reflection bright spot from the lens, no matter how I take the shot?
With bulb on the digital rebel, there is a counter on the display, so you don't need a stopwatch. nice little touch.
ages ago
In this picture (obtained merging visible and ir pic) in which I'm pointing the visible (human-eye) area I found that:
-or my camera didn't see some "short" violet
-or I can see some long UV
so... my shot will never respect my see...
Originally posted ages ago.
_andre_85_ edited this topic ages ago.
get a Sigma SD9 or SD10. you can remove the IR blocking filter in a matter of seconds with a small screwdriver, since it sits just inside the lens mount and acts as a dust protector. you only need one camera then for doing both IR and normal photos.
ages ago
Hello!
If you want to try if your camera works you can make an infrared filter by yourself. Simply use one or two unexposed and developed positive frames. It's a cheap method to test your camera. I have a Konica Minolta Maxxum 5D and read several opinions about it. My conclusion is, that infrared sensivity differs from camery to camera. With mine I need 10 secs with f/8 in bright light.
ages ago
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