D2H low pass filter surgical procedure

[stenrasmussen]

For anyone interested here are the pictures captured during the surgery.
I am happy to report that the patient is just as alive and willingly opens its shutter whenever pressed 
(will be 4 posts due to file size limitations).

[stenrasmussen]

2nd batch of pics.

[stenrasmussen]

3rd one.

[stenrasmussen]

4th and last one.

[alan_n]

You are a brave, brave man.

I got a cold sweat just looking at the series !

Alan

[marek]

Wow - second Alan's "brave man" comments.
What did you swap out the original filter for? Doesn't the D2h do IR all too well straight off the bat ?

Marek

[Scott Fleming]

Soons my wife oks me turning one of the bathrooms into a clean-room I'm gonna try this.  NOT!!   

[stenrasmussen]

Hee hee...it is not so hard to be brave when I got camera for a mere 350 USD 
As to IR sensitivity it's like night and day with and without filter. Bjørn suggested around 6 stops and my tests so far confirm this.
I left sensor w/o any cover but intend to put a piece of clear glass in.

[dpowell]

stenrasmussen - You're brighter than me - when I converted my D70, I photographed it every step of the way with my D200.  Then, when it was completed, I naturally wanted to take some test shots.  Totally forgetting that I'd been using the d200 to record the procedure, I took out the CF card, put it in the D70, formatted it, and then went outside and filled the card.

It was only when I was downloading the images later I realised . . .

 

[bfung]

Hi Stenrasmussen,

Excellent job! Thanks a lot for you procedures. I am think of doing the same thing.

I read from somewhere that we need to put back a replacement filter for the hot mirror. Otherwise, there will be error in AF. Does this apply to D2H?

I am thinking of putting a clear glass into D2H. So that I can play around different IR filters. What is the size and thickness of the glass filter?

Sorry for asking that many question. I am just a beginner in IR.

Billy Fung from Hong Kong

[stenrasmussen]

I put nothing in front of sensor. As far as AF goes I doubt it makes any difference as different lenses may require different focus shifts when dealing with IR (which focuses closer than visible light).
I do not know the dimensions of the low-pass filter...and I need to know now as I am about to cut my own filters to be placed in front of the image sensor.

[bfung]

In my country, we can buy some cheap tailored cut size IR filter. The choice of filter is limited - 720nm or 850nm only. Please let me know if you know the size of the IR filter.

[stenrasmussen]

I just cut a filter to fit. Measuring the rubber frame that sits between the sensor and the filter the measurements seems to be just a tad under 25x30mm (maybe 24.9x29.9mm). The filter I cut was 1.5mm thick and anything thicker than that would probably be difficult to fit.

[bfung]

Many many thanks!

[bellyface]

so hows about posting soe pics?

[stenrasmussen]

so hows about posting soe pics?

Pics taken with the modded D2H you mean?

[yunfat]

Pics taken with the modded D2H you mean?

Yes please.  Also, would you think about doing this for me for lets say, $50?   

[stenrasmussen]

Well, here's a new take on a pic I've posted before.
This was shot with the modified D2H and Nikkor 28/3.5 AIS lens.
ISO 200, f/3.5, 8sec.
Location: Just north of Hellestø beach south of Stavanger, Norway.

[stenrasmussen]

Yes please.  Also, would you think about doing this for me for lets say, $50?   

What camera is in question here?

[yunfat]

What camera is in question here?

I have a d2h also, thinking about the conversion, but there is no way I could do it myself, even with your excellent instructions.  I was hoping to employ it for portrait use.