Westminster fountain at sunset

by Jorge Córdoba

submit your photo


Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

Take the 2-minute tour ×
Photography Stack Exchange is a question and answer site for professional, enthusiast and amateur photographers. It's 100% free, no registration required.

I have converted a XT at home with excellent results. I now wish to convert a XSi and I am having trouble locating a visibe blocking filter except for the Life Pixel filter. Their filter price is out of this world.

What do you use to cut and finish a Hoya R72 filter?

share|improve this question
    
are you asking a particular user? –  Matt Grum Oct 12 '12 at 20:03
2  
I think it's the general "you". –  mattdm Oct 12 '12 at 22:01

2 Answers 2

When I did my conversion on a D80, I just used a hardware-store glass cutter, and a table.

I bought a 72 (I think) mm Hoya R72, removed the filter glass from the threaded holder, and cut it with a cheap roller glass-cutter.

enter image description here

I laid the stock filter-stack on top of the hoya filter to get a idea of where to cut.

enter image description here

enter image description here

On the other hand, I bought the camera specifically to convert it to IR, and have little sense of electrical caution.

I then proceeded to completely tear apart the AF sensor assembly and metering sensor, to remove the IR filter in those devices too. However, that's generally not needed, and is an absolutely gargantuan pain in the ass (faaaaaaar more then just changing the filter on the sensor).

enter image description here

enter image description here

I also drilled new holes in the cover-plate for the bottom of the camera, so I can access the AF sensor calibration screws with the camera completely assembled.

It still works!
(Except the built-in pop-up flash, and I'm ~90% sure that's just because I forgot to connect something. I'm just too lazy to take the whole camera apart again just for that. IR photography works best using natural/sunlight anyways).

share|improve this answer

You want a longpass filter with a cutoff above 630-650 nm. Some examples can be found here.

share|improve this answer

We're looking for long answers that provide some explanation and context. Don't just give a one-line answer; explain why your answer is right, ideally with citations. Answers that don't include explanations may be removed.

1  
It's best if you provide some reasoning why when you answer. Examples are helpful, but knowledge is better. It would be useful to our membership and other readers to know why that cutoff specifically is needed. –  jrista Nov 13 '12 at 3:21

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.