Infrared with Pentax ???

Does Pentax can do infrared photos (with hoya R72 or similar filters) ???
Does anybody have some experience with it???
--
Iv Merkaš (DarthJAZZer)

DarthJAZZer said:

Does Pentax can do infrared photos (with hoya R72 or similar
filters) ???

Click to expand...

Yes. The 6MP dSLRs by Pentax are very sensitive to IR light. The K10D needs a tripod and patience.

Here's a comparison:
http://www.jr-worldwi.de/photo/ir_comparisons.html

And here's a suggestion on how to post-process the images:
http://www.jr-worldwi.de/photo/ir_post_red.html

DarthJAZZer said:

Does anybody have some experience with it???

Click to expand...

Yes. Several members here shoot IR, including myself.

Cheers
Jens

--

'Well, 'Zooming with your feet' is usually a stupid thing as zoom rings are designed for hands.' (Me, 2006)
http://www.jensroesner.de/
--=! Condemning proprietary batteries since 1976 !=--

Hi Jens,
I found a no name 850 nm ir filter at a very tempting price.
I'm only afraid that my ds isn't sensitive enough for such a dark filter.
What do you think? Using the tripod is not a problem.
Thank you.
Enrico.

Hi Enrico!

Enrico B. said:

I found a no name 850 nm ir filter at a very tempting price.
I'm only afraid that my ds isn't sensitive enough for such a dark
filter.
What do you think? Using the tripod is not a problem.

Click to expand...

Well, if you are ok with using a tripod, I'd definitively go for it.

Good luck and post some examples once you get some shots!

Cheers
Jens

--

'Well, 'Zooming with your feet' is usually a stupid thing as zoom rings are designed for hands.' (Me, 2006)
http://www.jensroesner.de/
--=! Condemning proprietary batteries since 1976 !=--

On a similar note, I've asked both of the IR conversion shops if they plan to start doing conversions on Sony and Pentax cameras do to the increased popularity of both and the response was no.

One says the filter stack up is different on the S and P models from the N.

Grr....

Pentax will modify their camera for IR! Call and ask for the repair/Tech dept. This was for the *ists. Don't know if they will do the K cameras. Companies will do lots of things if you ask.
thanks
--
barondla

Very interesting and good to know. Never heard of a manufacture doing this.

Thanks a lot!!!
--
Iv Merkaš (DarthJAZZer)

Just to show what the camera can do (and not to highlight my lack of abiility).

Why I think this camera will be one of the most used for IR photography.

Took one photo handheld in the early afternoon sun (Australian Summer). Manual focus lense on autofocus so focus light was used. was around f4/5.6 and 1/45 of a sec at iso 1600 (meter was reading around 1/90th I think). First photo original pic, no in camera filter no post processing (other than resizing...all pics resized). Second pic in camera black and white filter only no pp. Third pic in camera coulour filter only no pp. Fourth pic in camera black and white filter and then in camera sepia filter, no pp.

Fifth pic copy of original pic with auto levels (photoshop 4) only.

Sixth pic copy of pic with Black and white in camera filter, auto levels photoshop 4.













Neil
http://www.flickr.com/photos/26884588@N00/

Hi Neil!

That's very impressive for such a dark filter! And that ISO 1600 shot shows some nice contrast after processing.

You don't happen to have a pair of vis/IR comparison shots with the RM90 for my sensitivity table?
http://www.jr-worldwi.de/photo/ir_comparisons.html

Cheers
Jens

--

'Well, 'Zooming with your feet' is usually a stupid thing as zoom rings are designed for hands.' (Me, 2006)
http://www.jensroesner.de/
--=! Condemning proprietary batteries since 1976 !=--

Hi Jens

I will try and get some comparison shots for you in the next few days.

I really like the in camera B/W filter after the auto levels, think I may have some fun with that, most of the other filters can be done better in PP of course but handy to have just the same.

neil

Hi Neil!

Member said:

I will try and get some comparison shots for you in the next few days.

Click to expand...

That would be cool, thanks!

Member said:

I really like the in camera B/W filter after the auto levels, think
I may have some fun with that, most of the other filters can be
done better in PP of course but handy to have just the same.

Click to expand...

Sure. But be careful: A simple B&W conversion will use much of the noisy blue channel. When doing the comversion in PP, you have much better control over that and you might decide to channel-mix the blue channel to less than 5% distribution. Well, or you start to like it, who knows?

Cheers
Jens

--

'Well, 'Zooming with your feet' is usually a stupid thing as zoom rings are designed for hands.' (Me, 2006)
http://www.jensroesner.de/
--=! Condemning proprietary batteries since 1976 !=--