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Welcome to the GigaPan Forum!

This is the place for Gigapan.com members to offer peer-to-peer support for exchanging tips, ideas, comments, etc.

Those who need direct technical assistance with their GigaPan EPIC Series imagers, stitching software or gigapan.com membership account should contact us.

Recent Posts
Aloysious A Gruntpuddock Aloysious A Gru...
Posted: May 19, 2012

Topic: Gigapan Mechanism / Plug spec for elect. shutter release

Jason, just wondered why you doubled up on the relays when adding another camera.

Surely one relay should be able to cope with the low currents from the firing/ focus circuits of several cameras?

Eric

Jason Buchheim Jason Buchheim
Posted: May 19, 2012

Topic: Gigapan Mechanism / Plug spec for elect. shutter release

Hi Tom,

I have used the Panasonic cameras and had to build an electronic release for them. The best way to start is to buy a cable release for it off ebay and start modifying it from there. The Panasonics use a couple different resistors for the cable release signal, so its not as straight forward as a Nikon, but very doable if you can use a solder iron. I am not an electrical engineer, just a hacker, so I might not know the best way to do it. My solution is probably more complex than it needs to be as I would use an Arduino mini, two relays, two resistors, a battery to power the Arduino. I have code and sample schematic in the old forum. I can’t think of a really easy way to trigger the Panasonics without some additional electronics (even the epic pro does not support it)

Basically, you use the Arduino Mini to listen for the 5volt digital pulse from the Gigapan on a digital pin set to input, and then have it do a digital output conncted to a pnp transistor to switch a reed relay, the reed relay makes the connection inline with the resistors to fire the Panasonic. In my version, I used two digital outputs, two transistors, and two relays so that I could individually control both focus and shutter- but I have stopped using autofocus due to occasionally missing frames (some sort of feedback loop is needed to detect if the shutter actually did fire and if not, stop the Gigapan, retry shooting, and notify the photographer- but the epic 100 does not have a feedback input- the Epic Pro does) If you are not seeking a programmable focus delay and just want to fire the shutter, its might be possible to skip the whole Arduino and have the Gigapan signal trigger the pnp relay to power the relay and make the connection for the camera shutter (with the resistors inline)

Sparkfun.com sells the Arduino Mini for about $20, I can give you the code needed to program it, but you will have to assemble the rest of the parts (all available from RadioSchack, two reed relays, a pack of pnp transistors, the two resistors {not sure thier values right now, but I can check later}, a small predrilled circuit board, a wire wrap too and wire, a 9v battery and clip, a switch to turn it off, the plugs to connect to camera and Gigapan, and a little box to put it all in, all less than another $20)

Learning Arduino stuff is fun too.

I build one of these to fire two Panasonics for stereo gigapanning, so I used 4 relays to simultaneously fire both cameras with each trigger pulse- it took about one evening to build (I am not scared of the solder iron or putting this stuff together, but this not really beginner project)

Good luck, I think you would be happy with the Panasonic on an Epic 100, size should fit well. The Sony NEX7 seems like a great choice as it has a nice 24mp sensor, but Sony has NO cable relase options for it!

The new Nikon d3200 seems like a good choice too, easy to build the shutter release, would fit on Epic 100, 24mp APS-c sensor, and great Nikon glass.

Let me know how it goes.

Jason

Tom Nelson Tom Nelson
Posted: May 19, 2012

Topic: Gigapan Mechanism / Plug spec for elect. shutter release

Thanks to all. Jason, I’m thinking of buying a Panasonic Lumix GX1 and the ability to trigger it thru the GigaPan will greatly influence my decision.

Mosley Hardy Mosley Hardy
Posted: May 18, 2012

Topic: General Gigapanning / where to buy gigapixel photos

Try magicmurals.com

Mosley Hardy Mosley Hardy
Posted: May 18, 2012

Topic: General Gigapanning / Finding Nodal Point in Canon 100-400mm

Try this video, which explains the same method that Gigapan recommends:

https://www.youtube.com/watch?v=3JkbZ1KehNo

Start at 3:31

Jason Buchheim Jason Buchheim
Posted: May 18, 2012

Topic: Gigapan Mechanism / Plug spec for elect. shutter release

Here is my post on the topic from the old forum, I was using some extra hardware as I wanted a delay for focus and used an arduino mini for the project. I am sure it can be done simpler, but it works great.

The full thread is here: http://forum.gigapan.org/viewtopic.php?t=35 , read it all to have the best understanding…

I now have a Gigapan Pro unit so have not used this in a while.

Aloysious A Gruntpuddock Aloysious A Gru...
Posted: May 18, 2012

Topic: Gigapan Mechanism / Plug spec for elect. shutter release

Found this – http://code.google.com/p/stereogigapan/wiki/dig…

Don’t know if it is relevant to your model.

Tom Nelson Tom Nelson
Posted: May 18, 2012

Topic: Gigapan Mechanism / Battery recommendation EPIC/EPIC 100

I’m happy with my nickel-zinc (NiZn) batteries. They have a higher voltage than NiMH (nominally 1.6v as opposed to 1.2v) and you can hurt your GigaPan if you’re not careful. I cut a slug of metal from a curtain rod, the same length as a AA battery, and wrapped it in tape to be the same diameter. I use the slug and five NiZn’s in the battery tray and get a bit under 10v with a freshly charged set. Once the batteries run down and the voltage drops, I’ll swap out the slug for another NiZn. They hold their power better in cold weather too.

Jason Buchheim Jason Buchheim
Posted: May 18, 2012

Topic: Gigapan Mechanism / Plug spec for elect. shutter release

The old forum is a treasure trove of great information, and it still exists, just can’t add new stuff. Its at http://forum.gigapan.org

The Epic100 has an official electronic trigger cable for cannon cameras, and for others, you will need to roll your own (5v pulse could trigger a relay or opto isolator) I know I had rigged something up in 2008 for a Nikon d200 using opto-isolators. What camera do you wish to trigger?

Tom Nelson Tom Nelson
Posted: May 18, 2012

Topic: Gigapan Mechanism / Finding Nodal Point in Canon 100-400mm

Just to save you some time, as you swing the camera side-to-side, observe the way the more distant object moves in relation to the near one:
If distant object moves OPPOSITE of swing; tripod-screw-to-pivot distance too LONG
If distant object moves in DIRECTION of swing; tripod-screw-to-pivot distance too SHORT

In other words, if you swing the lens to the right and the distant object moves to the left of the near object, your pivot point is too far from the tripod screw.
Tom

Tom Nelson Tom Nelson
Posted: May 18, 2012

Topic: Gigapan Mechanism / Few questions

I’m using PowerGenix nickel-zinc (NiZn) AA batteries in my Epic 100. They have a higher voltage and I use five batteries and a slug cut from a curtain rod in the GP battery tray. If the batteries are getting low, I’ll swap out the slug for another NiZn battery. NiZn’s have higher voltage (1.6v) than NiMH, do better in the cold and have a longer shelf life. They also are less toxic when recycled than NiMH batteries. I bought mine from Thomas Distributing but I know B&H also sells them.

Tom Nelson Tom Nelson
Posted: May 18, 2012

Topic: Gigapan Mechanism / Voltage

mskp’s link is dead, but I had copied the following from the thread:

Re: Battery Life Problems
In a prior discussion Stoney Vintson stated “Never exceed 9.6 volts. You may damage your imager electronics if you exceed 9.6 volts to the linear voltage regulator.” These NiZn batteries would be at the max limit, providing they don’t have a higher ambient (idle) voltage as do lead acids as the initial surge could do damage. Perhaps GigaPan could test these cells as it might solve some of the battery problems.

Re: Battery Life Problems
by Stoney Vintson on Wed Aug 19, 2009 4:19 pm
Actually we have been using the Energizer lithium batteries which are usually 6 batteries in series * X volts = 9.4 to 10.4 volts. The voltage is fed to a linear regulator which needs the voltage to be in a certain range in order to output a particular voltage such as 5 volts.

[end of copied thread]
On my Epic 100, I routinely use over 9 volts. On my previous early-version Epic, I once gave it about 10.6 volts (IIRC). It clicked and shut down. When I fired it back up with a lower voltage, it had reset everything to factory defaults but showed no damage.
Tom

Tom Nelson Tom Nelson
Posted: May 18, 2012

Topic: Gigapan Mechanism / Plug spec for elect. shutter release

On the old forum (which is now gone) someone posted a spec for the plug GigaPan uses to connect their electronic shutter cord to the robot. Does anyone still have that information? I want the plug that goes into the robot, not the camera, on the Epic 100.

Jason Buchheim Jason Buchheim
Posted: May 18, 2012

Topic: api.gigapan.org / API JPG dimensions

Ron, of course you may hack! But dont start there, start at http://www.stereopan.com/ipan, it already works as a general purpose renderer!

The image pyramid render-er is open source. It works wonderfully on the desktop and iOS devices. It has better speed than Seadragon, but missing much of its animation and inclusion technology [ie. layers on top] (how much can you expect out of 600 lines of javascript?) It only works well on HTML5 hardware accelerated <canvas> browsers (all modern incarnations work well- ie, safari, opera, firefox, chrome) The coding is soo efficient, it should only take 3 months to wrap your head around it entirely and understand its magic (that was my timeframe at least).

Ron Schott Ron Schott
Posted: May 18, 2012

Topic: api.gigapan.org / API JPG dimensions

That’s great, Jason! Do you mind if I hack (ethically) your JavaScript renderer to play around with this on my own site? I’ve been meaning to explore whether the <canvas> tag would provide an HTML5 compatible way of rendering GigaPans (especially for non-Flash capable devices) – I see now that you’re way ahead of me (as usual).

Jason Buchheim Jason Buchheim
Posted: May 18, 2012

Topic: api.gigapan.org / API JPG dimensions

So I could not resist myself, I thought, could this tile composting be done in a javascript <canvas> tag entirely in the browser? So I came up with this image pyramid render-er for a very large canvas. Seems my browser could only handle a canvas width of 8000 pixels, so I set this as the upper limit. This is rendered entirely in javascript, use it sparingly as it requests all tiles for a width of 8000 pixels image. Its 4x larger than the api offers.

Jason Buchheim Jason Buchheim
Posted: May 17, 2012

Topic: api.gigapan.org / API JPG dimensions

Well, I did not know what you wanted the thumbnails for, but 10000×2000 is hardly a thumbnail;)

Ron Schott Ron Schott
Posted: May 17, 2012

Topic: api.gigapan.org / API JPG dimensions

Says Jason: “The max thumbnail width is now 2000 pixels (for a while the api would actually return jpgs of any requested width!!!)”

And I had been taking good advantage of the wider widths – I have a dual monitor setup where each screen has a width of 2048 pixels – coincidentally, the maximum width Google+ will allow image uploads without costing one for storage space. Also, it was very convenient to be able to return large JPG images (say 10000×2000 pixels) so that I could crop out sections at high resolution in Photoshop – much easier than having to restitch an image and save the Tiff or Photoshop RAW to do the same thing.

Capping the width of JPGs from the API thus breaks a feature of the API as far as I’m concerned, so in my view the issue is not fixed.

[As long as I can get arbitrarily large images via the API it’s actually easier for me to crop what I need in Photoshop than to use the JSON API to calculate the proper proportional dimensions – in most cases I want to trim the ragged edges off anyhow, so bigger black bars don’t bother me in the least.]

Jason Buchheim Jason Buchheim
Posted: May 17, 2012

Topic: api.gigapan.org / API JPG dimensions

If you query the api with the widths and heights set to the correct aspect ratio, it will return a thumbnail without any padding. The thumbnail api is designed for delivering the images on the Gigapans list pages, whose thumbnails have a maximum height of 360 pixels. The Gigapan list pages use some JavaScript code to compute how big of an image to request – it is not hard coded into the pages html. Each list page result gets updated in the browser via ajax magic to show an image of the proper resolution for the window width of the calling browser (thus reducing download time on small screen devices or window widths).

The Gigapan data api is publicly accessible, you may query the api with JavaScript or php to get the image width and height (as well as all the Gigapans pertinent data), then do your math, and output your desired result. For instance, for your image, the new api address would be http://www.gigapan.com/gigapans/104010.json . If using javascript, you can use jquery library to easily request and decode the data into javascript variables, but you will need to use the OLD api, as javascript requires the data to be wrapped in a function (JSONP format) to access the data cross domain. [The new api address does not support JSONP…] The old api address is http://api.gigapan.org/beta/gigapans/104010.json. Returned data includes the Gigapans width and height, then do your math to get the aspect ratio (width/height), set your thumb height at 360 pixels and multiply 360 by your aspect ratio result to get your width, and you will get your image without the ugly black padding bars (e.g. http://api.gigapan.org/beta/gigapans/104010-168…)

The max thumbnail width is now 2000 pixels (for a while the api would actually return jpgs of any requested width!!!)

Here is a simple php script that will output a page with the Gigapans thumbnail 360 pixels tall and spit out a list of other dimensions with the proper aspect ratio. (just change the id in the address to match your Gigapans id)

http://www.3d-360.com/gigathumb.php?id=104010

source: http://www.3d-360.com/gigathumb.php.txt

Cheers

Jason

PS. In a nutshell, visit this page with your Gigapans ID to get your proper thumbnail dimensions:
http://www.3d-360.com/gigathumb.php?id=66615 (change the 66615 to match your Gigapan ID)

Gabriel O&#x27;Donnell Gabriel O&#...
Posted: May 17, 2012

Topic: api.gigapan.org / API JPG dimensions

Your image should render now. The max height was not set to an appropriate value.

nickerjo nickerjo
Posted: May 16, 2012

Topic: General Gigapanning / What's in your bag?

Greetings: Since you asked. I have a fine art photo studio and am represented by three galleries in SC, two ithe Charleston Tourist Mecca area.I also do 15-20 show sayer including the Charleston Spoleto festival.

My primary body is a Canon 5 D MK II. ll of my lenses are L series going from a 17 – 40 to the 500 f4 lS.

I was intrigued by the concept and bought the Epic last week to test the concept. I used it with my Canon Elph to capture the first image. After my first awkward capture I am thrilled with the potential and look forward to getting the pro to support my usual gear. Although I believe the Epic will be best for international travel.

Please feel free to check out my first gigapan stitch on gigapan. Search for nickerjo. Also please feel free to visit my studio site,
Leaningpalmstudio.com.

All the best,

j. Nickerson

Ron Schott Ron Schott
Posted: May 16, 2012

Topic: api.gigapan.org / API JPG dimensions

It would appear that somebody jiggered with the API recently so that the pixel dimensions of output JPGs no longer match those input via the URL. For example: http://api.gigapan.org/beta/gigapans/104010-200… is currently returning a JPG image with pixel dimensions 1584×396.

Please fix this so it works properly again.

jessegittens jessegittens
Posted: May 16, 2012

Topic: Special-effects Gigapans / HDR Workflow

Hello. does anyone have any tips for HDR workflow? right now what i am trying is creating 3 gigapan images 1 High, 1 Mid and 1 Low ex. Then i batch crop them in CS5 but for some reason i can’t get finish the last step of combining them as a HDR. I have tried both Cs5 and Photomatix Pro but they both fail. Could it be that the image size is to big?

Jason Buchheim Jason Buchheim
Posted: May 16, 2012

Topic: Gigapan Mechanism / Galileo iOS Iphone Robotic Mount

Just found out about this kickstarter project http://www.kickstarter.com/projects/449163977/g… Seems promising, very cool for stop motion timelapse. They mention it being good for 360 degree spherical photography, but as the control is through the base of the phone connecting to the device, that puts the lens out to one side, not rotating though its entrance pupil. Also, the camera in the iphone is really just a toy. I very much like the concept of using a phone to control a panoramic robot, it would be super nice if the Gigapan unit could be controlled via wifi or usb from another device. What does the future hold?

Jason

David Pivin David Pivin
Posted: May 15, 2012

Topic: General Gigapanning / new camera or not, from 6mp to 24mp

Mark,

You will certainly see a difference going to 24 megapixels. I strongly recommend doing it. The only downside is that you will fill up your memory cards a lot faster. ;-) I would recommend you use a 16G or 32G card, especially if you choose to use RAW format. Also, you should put a zoom tele on your shopping list if you don’t already have one. As I told Tim above, 300mm or more will give you great results with the 24 megapixel sensor.

Dave