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Forum: Pentax K-1 & K-1 II
03-09-2019, 05:40 PM
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I have a K-01 with full spectrum conversion and it works great in the IR. Autofocusing will work as long as the lens being used is fast enough to give the AF system enough information to work with.
I haven't shot any UV, but one problem you might encounter is focusing at infinity since in UV a lens will focus shorter than its listed focal length and the infinity setting might not place it close enough to the sensor. A weak negative supplementary lens from an optician on the front should take care of that (a corrective lens for a person who is nearsighted). Many optical materials will pass the UV you're talking about just like some Pentax lenses so that wouldn't be an issue. Color fringing isn't an issue either since you're only using a narrow band of wavelengths (and basically B&W images).
WiFi commander that I mentioned previously, provides live-view and access to camera & lens controls (for lenses which work with the K-1 that way), so it's worth looking into. The creator has put a lot of time into improving it and its features since it was first introduced.
Good luck with your project. Sound's like a really interesting app for the K-1.
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Forum: Pentax K-1 & K-1 II
03-07-2019, 04:54 PM
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There are "range extenders" which pick up the signal and retransmit it on a different band with more power. That might be a consideration for the drone end since there's no way to directly tie into the WiFi unit in the K-1. Regarding what photoptimist mentioned, a Yagi antenna connected to a ground based transceiver (by wire) and then to a device like a laptop via USB might get the best range, but you'd have to keep the antenna "on target" to avoid dropouts (could be a two person operation). Small transceivers are made which will work with a good system on the other end up to about 1/4 mile or more (direct line of sight) this way.
Here are a couple of links that might be of use:
RadioLabs - Radio, Wireless and Beyond -
amazon.com: Alfa Network 1000mW High Power Wireless G 802.11g Wi-Fi USB Adapter with 5dBi Antenna AWUS036H: Computers & Accessories?tag=pentaxforums-20&
Also Google "Alfa Network booster". Some companies that carry these, also carry other WiFi devices that might lend themselves to your use.
If you don't mind sharing, what drone are you using and how do you like it?
Also, if you haven't already done so, check out WiFi Commander in this forum - it's a nice little program that might be of interest to you.
A K-1 on a drone:):)
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