Hi guys. Long time lurker, first time poster
I just received my HT-301, and coming from a lepton 3.5 ("DIY-Thermocam") I am frankly gobsmacked at how much better the HT-301 is! US$770 isn't exactly chump change, especially with an exchange rate that sure ain't what it was about 5 years ago... So it was a bit of a gamble in a way, but one that appears to have paid off.
My first suspicions were that the sample photos on HTI's website were a little too good to be true, but I can safely say they have not been doctored. They are, however, probably good examples of excessive noise correction that seems to be applied by default with the HTI app. There is every possiblity that I don't know what I'm talking about yet.
Leads me to my next point, the HTI app is at best functional... But in my case, far from it. I use a Google pixel 3a XL which runs Android 10, and to be fair "Mr Lin" (the chap who answers HTI's email enquiries, and I think runs the YouTube channel) did say to me that it won't support my phone, but that it will support the Mrs' Huawei mate 20 Pro running a bastardised version of Android 9. Mr Lin was very quick with email replies, tho many of them featured only one word
So the app works on the Huawei, not much to write home about and a lovely watermark for my trouble, covering probably 50 US dollars worth of pixels
FFC clicks the shutter away and seems to change the image for the better, but the image does have noticeably uneven "illumination" with a brighter ring around the periphery (like vignetting, but the opposite) along with a funny looking defect in the centre of the frame, kind of reminds me of spherical aberration. I have since noticed a very similar "feature" in photos taken with other 384x288 17μm modules that appear to be the same thing with different branding.
Which leads to the next point... The ht-301 works like a charm with ThermViewer, even on Android 10
and without going into it too much, it's a heck of an improvement over the HTI app, even when on a phone it works with
lens cap on and hold down the eraser (nuc?) looking button and... bam! The defects in the previous paragraph are gone.
And the final point I'll make, the lens sure is a loose fit in it's focusing threads! I suspect that may be intentional, to protect the sales of thermal rifle sights that need to hold a zero, not that HTI appear to sell one
However it doesn't appear that it will fall out, with (not very) hard stops slightly past Infinity and at around 120mm from the lens, definitely less than the 190mm on the spec sheet.
Attached is a photo that is definitely something a lepton could not resolve, it would appear to be the brightly illuminated blood vessels on the back of the Mrs hand. Focus isn't nailed, and it's tricky to get stills to come out as good as they appear live... Tricky to hit the shutter button without shaking the camera I suspect.
Cheers
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