What Is RTI?

Reflectance Transformation Imaging (RTI) is a computational photographic method that captures a subject’s surface shape and color and enables the interactive re-lighting of the subject from any direction in a software viewer, revealing details not visible with the naked eye. Learn more…

Question? Ask on the CHI Forums

CHI offers a free discussion forums site where you can share your questions, insights, and issues as you work with Reflectance Transformation Imaging (RTI). Join the conversation!

RTI Workflow Materials

» Capture

  • Download the guide and the glossary
  • Watch the how-to video

» Highlight Capture Kit

  • Order the RTI Starter Kit

» Process: RTIBuilder

  • Download the guide and example files
  • Download RTIBuilder

» View: RTIViewer

  • Download the guide and example files
  • Download RTIViewer

RTI Highlight Capture Starter Kit

Your starter kit for using Reflectance Transformation Imaging (RTI) is designed to get you up and running quickly. It contains the parts you need to get started capturing images for RTI using the highlight process.

About the Kit

The kit contains a set of reflective spheres of various sizes, mounting hardware for the spheres, parts that you need to create a light wand, and miscellaneous items you will find useful in setting up and using your image-capture system. The parts are contained in a durable Tuff storage box for easy transport and safekeeping.

RTI Kit Contents, Updated 2014

Contents of the RTI Highlight Capture Starter Kit (see details below)

How to Order RTI Kits

Note — We cannot accept a scan or a photo of your order form, so please be sure to follow these instructions:

To order, download the appropriate order form below. Open the form in the free Adobe Acrobat Reader application, and type directly into the fields. Save the form and send it to rti-kit@c-h-i.org. Please be aware that many web browsers do not properly handle PDF forms, so you should always use Acrobat Reader.

Download the US Domestic Order Form (PDF)
Download the International Order Form (PDF) 

The cost of each kit is $370.00 plus the cost of shipping via USPS (United States Postal Service) in the US. We charge sales tax for kits shipped within California.

We also ship internationally via USPS, which transfers the package to your country's local postal service for delivery. We have no control over additional taxes or fees at your end, or whether the package will be held until the fees are paid; this varies by country. To determine international shipping and handling costs in advance, contact us at rti-kit@c-h-i.org.

We can accept credit cards, Electronic Fund Transfers (EFT), checks, and purchase orders. If you choose to pay by credit card, we will send you an invoice that includes a link to enter your credit card information using a secure server. At that time you can pay with any major credit card or with a PayPal account.

If you have any questions about the kit, please send an email to rti-kit@c-h-i.org and include your location. If you need to have your department information and/or a purchase order number included on your invoice, please send us that information, and we will email an invoice back to you. We will ship the kit once we have received payment from you or a p.o. number from your institution.

Parts in the Kit

Reflective sphere parts
Spheres 2.25" (57.15mm) tapped and threaded to fit 1/4x20
  1" (25.4mm) tapped and threaded to fit 1/4x20
  1/2" (12.7mm) ceramic ball bearings
  1/4" (6.35mm)  
  1/8" (3.175mm)  
  1/16" (1.588mm)  
  1/32" (0.79375mm)  
Finish washers variety of sizes, for holding spheres  
12" and 3" threaded rods (2 each) 1/4x20 format to fit 2.25" and 1" spheres (2 each)  
Coupler nuts (2) 1/4x20  
Light wand parts
Umbrella adapter handle umbrella adapter with cold shoe flash mount  
Handle handle for strobe assembly; matched with coupler to mount umbrella adapter  
Coupler adapters (pair) coupler adapters 1/4" and 3/8" female  
Threaded stems taped 1/4x20 bolts, to hold radio trigger or to secure string  
OP-3 UV-filtering acrylic, cut to fit “speedlite/speedlights” (1.75"x3")  
String for measuring a fixed distance from target to light source  
Bongo ties (8) for cable management  
Bubble level cold shoe bubble level, fits in hot shoe of SLR  

Note: Cultural Heritage Imaging (CHI) is furnishing this item “as is.” This RTI kit is provided by CHI without any representation or warranty whatsoever, whether express, implied, or statutory, including, but not limited to, any implied warranty or condition of merchantability, fitness for a particular purpose, non-infringement, satisfactory quality or accuracy of informational content, and all implied warranties are hereby expressly disclaimed by CHI.