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Forum: Pentax K-30 & K-50
03-02-2015, 08:31 PM
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I have a k-30, and i like taking it out in storms. The weather sealing works great, i bring it out in the rain completely unprotected and never have any problems.
The only issue i have is that it's so difficult to get WR lenses. They're extremely expensive, and the options are limited.
I was thinking, since the camera body is weather resistant, do they sell covers that can go over the lens to make it weather resistant?
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Forum: Pentax K-3 Photo Contest
05-30-2014, 11:55 PM
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Might as well leave one last post here for visibility.
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Forum: Pentax K-3 Photo Contest
05-23-2014, 12:32 AM
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After giving it some thought... i've changed my entry.
As i understand it, i can do this until the 31st, right? If not, hopefully someone will let me know...
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Forum: Pentax K-3 Photo Contest
05-19-2014, 10:48 PM
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[Disregard this reply, meant to resize the image, accidentally uploaded it in a reply instead of editing. It's fixed now.]
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Forum: Pentax K-3 Photo Contest
05-19-2014, 10:44 PM
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Snails make the best models...
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Forum: Pentax K-3 Photo Contest
05-17-2014, 10:39 PM
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Know that feeling when you haven't had any coffee?
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Forum: Pentax K-30 & K-50
04-10-2014, 12:01 PM
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Another problem i've run into, when attempting to set the white point by photographing grass with the filter on, i get a message saying "could not complete the operation correctly".
It seems that the entire image just comes out monochrome red. I think i must have gotten a bad filter :/
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Forum: Pentax K-30 & K-50
04-10-2014, 12:29 AM
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True, i could edit it any way i want after that.
I think i may have found my problem though... is it necessary to shoot in raw mode to get a proper infrared image? Because i've been using jpeg mode...
If so, how do i edit raw images? All i have right now is gimp, and that can't do it. Are there any free programs that can do it? Or at least ones far cheaper than photoshop? Preferably something in the ~$50 or under range. It took me about 6 months to save up for my $500ish camera setup i have now, so trying to buy photoshop is out of the question.
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Forum: Pentax K-30 & K-50
04-09-2014, 11:10 PM
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Will 800nm still allow any color through? I want to do false color, not grayscale.
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Forum: Pentax K-30 & K-50
04-09-2014, 09:55 PM
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Any idea what wavelength i should go for with the k-30?
I really like the false color type infrared photos.
---------- Post added 04-09-14 at 10:26 PM ----------
I'm starting to wonder if the infrared filter i received was fake. Or could this just indicate that i'm doing something wrong? Have a look at this, a clearer image:
I'm using gimp, and after looking up various tutorials, i've tried a few things. Apparently these methods work for some people quite well, i've seen them work in video tutorials, but for me... i get bad results.
Here's the original, unedited image:
Here it is after using gimp's auto white balance, which from what i've heard is great for infrared shots:
As you can see, that doesn't work for me.
Here's the image with the red and blue channels reversed:
It's just blue now. I've experimented with channels, and no matter what i do, it basically just acts like i'm tinting a grayscale image.
Now, here's the interesting bit, here it is converted to grayscale, with curves:
The leaves are all dark... why are the leaves dark? Is the filter i bought fake? Or am i doing something wrong?
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Forum: Pentax K-30 & K-50
04-09-2014, 08:01 PM
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Well, the thing is, the filter i have seems to just be dark red tinted glass. When i put my eye up to the filter itself, i can see through it when looking outside in the bright sun. It's almost just like welding glass. Is that normal?
Anyway, the blur isn't what i'm worried about, it's the extreme contrast. The highlights, though only being midrange in tone, appear blown out, and even slight shadows are entirely black. Is there anything i can do about that?
---------- Post added 04-09-14 at 08:02 PM ----------
Yep, i did that test before i bought the filter, just to be sure.
Would less IR sensitive cameras benefit more from a weaker filter, or a stronger one with a longer exposure time?
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Forum: Pentax K-30 & K-50
04-09-2014, 06:34 PM
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I recently got a k-30, and i bought a 720nm neewar infrared filter for it.
Anyway... the images it is producing are just awful. Here's a (bad) example. http://i.imgur.com/pchkQOe.jpg
That one was shot by hand, with a shutter speed of about 1/4 of a second, and 100 ISO... which seems a bit faster than i expected to be using with this filter.
Anyway, am i most likely doing something wrong, or does the pentax k-30 simply not work for infrared images? Or did i simply get a bad filter?
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