[joshmas]

Hi all, I had frustrating results with IR on the K10D. I just stepped up to the K7 and was wondering if anyone has had any success shooting IR with the K7? Settings?

Thanks,

Josh

[smigol]

Frustrating in what sense? Too long of an exposure time, not enough IR sensitivity?

I'm curious what your experience has been with the K7 and IR. I'm assuming that there's a new kind of IR filter for this camera. Not sure what the frequency response would be.

[joshmas]

Frustrating in what sense? Too long of an exposure time, not enough IR sensitivity?

I'm curious what your experience has been with the K7 and IR. I'm assuming that there's a new kind of IR filter for this camera. Not sure what the frequency response would be.

Frustrated, in that nothing came out well. I attribute that to lack of ir sensitivity on the k10.

Haven't had a chance to do any experimenting on the k7 yet. Maybe this weekend..............if I can find the filter.

Perhaps if you told us your settings, exposure times and posted some examples, some solutions might be forthcoming.

[therion]

Pentax K7 can provide very good IR results!

But first of all, not every filter is good.
I have tried many of them, for example Cokin 007 is absolutly not usable because of plenty of reflections.
Also some glass filters as Heliopan RG 645-715 are not good.
Good filters are starting at 720nm, like Hoya R72 or Kood R720.
I´m using Kood R720 on Sigma 10-20/4-5.6 EX DC.

Not every lens is good for IR. Many lenses are creating very bad reflections, for example Tokina 12-24, many Canon lenses.

Best IR Settings with K7:

1. RAW
2. Manual exposure - 20sec or 30s, f11
3. shoot under strong sunlight to obtain IR effect
4. manual focus to IR point on lens, if there is any

5. !!COVER viewfinder - this is very important becasue You will get reflections

[therion]

here is my K7 IR example:

User Photo Gallery - Nature

[Ishpuini]

I didn't find much difference in IR behaviour between the K10D and the K20D. And since the K-7 is using a very similar sensor to the K20D, I'm guessing there won't be much of a difference between the K20D and the K-7 either. That corresponds with the very useful settings provided by therion, which is more or less what I used on my K10D/K20D. I haven't used my K-7 yet for IR.

The models using the Sony 6MP sensor were much more sensitive in the IR and could be used at "normal" shutter speeds, but the K10D/K20D/K-7 can be used to achieve IR photography very well, albeit your options are limited by the long shutter speeds that are required...

Wim

[therion]

As I have had K10D and now K-7, I can compare it´s IR capabilities. I can say K-7 is even better for IR with Kood R720 filter. IR effect is stronger.

[joshmas]

Therion,
Thanks so much for the settings and feedback. I have the Hoya R72 filter that I've finally laid my hands on again, and will give some IR a try this week!

I'll post if anything turns out.

Josh