Replies to This Discussion

Permalink Reply by hightechhobbie on February 19, 2012 at 6:35pm

this is from a pentax the quality isnt as nice as yours

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Permalink Reply by Vishal on February 19, 2012 at 7:58pm

That turned out looking great!

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Permalink Reply by Vishal on February 19, 2012 at 7:59pm

I have a Pentax Optio that is on loan to me from a friend.  It's a nice camera.  I like how the Optio line has remote shutter capability built in. 

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3D RoboticsPermalink Reply by Chris Anderson on February 19, 2012 at 8:31pm

Yes, the Pentax Optio line is really good for aerial photography. Some can also shoot in continuous mode with less than 2 seconds between shots, which is what you need to ensure that your shots overlap for stitching software. (I recommend no more than 1.5 seconds between shots at 200 feet)

Permalink Reply by Kristian on February 20, 2012 at 2:57am

That looks great. Where was this shot? I'm going to get a preview Gallery going on Flickr while we build the new bespoke Floorink gallery. If this was shot lower we could get the sea lapping against the rocks hi res. I see stuff like this working really well on shop floors, for like surf shops and walking and climbing shots for the rough terrain. Loving some of the shots, i'm so glad you guys are starting to grasp the potential.

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Permalink Reply by Richard on April 3, 2012 at 6:22am

Hi hightechhobbie - Which Pentax did you Get? The quality looks good, good enough for GIS, 

Rich

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Permalink Reply by Vishal on February 19, 2012 at 2:02pm

Kristian, I'll look forward to seeing the photos you get.  I've been taking photos from quadcopter since last year.  I've gotten some good photos when the camera is angled down anywhere between 30 to 60 degrees.  I've yet to have any really interesting photos turn out when shooting straight down.  My experience so far is that shooting straight down is the most challenging when it comes to taking interesting photos.

I've only had one that turned out halfway decent so far.  I'll be trying for more soon.

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Permalink Reply by Kristian on February 19, 2012 at 2:32pm

Perfect start :)

Let's start sharing data ASAP. That shot looks great.

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Permalink Reply by Kristian on February 19, 2012 at 2:39pm

I think we should shoot lower, try and find the real time correct aspect, let's try 10' with a 16mm lense.

What do you think?

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Permalink Reply by Vishal on February 19, 2012 at 5:20pm

You will likely find this site to be very useful-

http://www.cambridgeincolour.com/tutorials/camera-lenses.htm

According to that site, our NEX cameras will produce 1:1 ratio with a 25mm lens.  So for example if you're flying 100 feet high, then you can fit an image 100 feet wide when using a 25mm lens. 

Currently, I only have the 5n kit lens that is 18-55mm.  I learned recently that at 28mm, that lens has very little barrel distortion.  But at 18mm, it can have some barrel distortion.  So that will be another thing to keep in mind if you're trying to accurately capture an overhead shot without any barrel distortion.

With the 16mm lens you get even more coverage.  But I'm not sure how much barrel distortion that lens has. 

I'm looking forward to the new NEX prime lenses coming out.  Will likely get the 50mm one- http://www.talknex.com/f2/sony-announces-e-mount-nex-lens-roadmap-2...

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Permalink Reply by Kristian on February 20, 2012 at 1:55am

I think the hard bit will be trying to judge what lense for low down shooting that gives is a real life size effect like grass. We need to try and get all the tiles life size for the low stuff.

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Permalink Reply by Kristian on February 20, 2012 at 3:28am

But lets not rule out the high shot hi res stuff as we will find a market for this also.

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