CPT Certification

What the Certified Photogrammetric Technologist Credential Is

The CPT credential discussed on this site is the ASPRS Certified Photogrammetric Technologist. It recognizes technicians who work in the production side of photogrammetry: processing imagery, building stereo models, extracting measurements, and producing mapping products under the supervision of, or alongside, professional photogrammetrists.

It is easy to confuse with neighboring credentials. It is not the Certified Photogrammetrist (CP), which ASPRS positions as the scientist-level credential, and it has nothing to do with unrelated certifications that happen to share the same three letters. If you searched for the acronym and landed here, the quickest way to orient yourself is to read What Is CPT? and What Does CPT Stand For?, then return to this overview.

Who Issues It and Who Delivers the Exam

The issuing body is the American Society for Photogrammetry and Remote Sensing (ASPRS), the Imaging and Geospatial Information Society. ASPRS owns the certification program, reviews applications, sets the content matrix, and publishes the certification and recertification guidelines.

Exam delivery is handled by Prometric. Candidates may test at a Prometric test center or take the exam online with remote proctoring. Two practical points matter here:

• Remote testing requires a personal computer, not a work or government-issued device, because those machines often have security software that blocks the proctoring application.
• ASPRS recommends a test center when practicable, which sidesteps webcam, network, and room-scan problems on exam day.

The ASPRS program page reports that examination results are available immediately, so you will not wait weeks to learn the outcome.

Eligibility and the Source Conflict You Should Know About

Eligibility is the area where the published ASPRS documents disagree with each other, and honest guidance has to say so. The detailed technologist section of the manual describes the following structure:

• Three years of total experience, including at least two years in the specialty
• Four references
• An ethics declaration
• Application review by ASPRS
• Successful completion of the examination

However, the program overview, the manual's introductory summary, and the October 2025 application instead describe three years of specialty experience. These are not the same standard. Rather than guess which one applies to you, ask ASPRS to confirm your individual eligibility before you pay anything. Our CPT Requirements guide walks through how to document your experience so that the conversation with ASPRS goes smoothly.

Education credit

The technologist provisions allow educational credit worth one-half year of experience. The manual is not fully consistent about which degrees qualify: one page permits an associate or higher degree, while an earlier table names bachelor's, master's, and doctoral degrees in engineering or the natural or physical sciences. Have ASPRS confirm both the qualifying degree and how your experience will be calculated.

How the Written Examination Works

The assessment is a computer-based written technologist examination with a two-hour testing limit. The manual allows a limited set of materials:

• One bound reference
• A handheld calculator
• A writing device
• Scratch paper

This is not unrestricted open-book access. Follow the approved delivery instructions for your testing mode, and do not assume that whatever you can pull up on a second screen is permitted. Because only one bound reference is allowed, choosing and tabbing that reference is itself a preparation task. A well-indexed photogrammetry text with your own flags on formulas will serve you better than a stack of loose notes you cannot bring.

We have not verified a current question count, a numeric passing threshold, or an official pass rate, so we do not state any here. If you are configuring a full-length mock exam, confirm the current question count with ASPRS first, and treat the two-hour limit as your pacing constraint. For what is and is not known about scoring, see CPT Passing Score and CPT Pass Rate, and for an honest read on difficulty, How Hard Is the CPT Exam?

Where the Points Are: The Content Matrix

ASPRS publishes a matrix of subject categories with approximate allocations per credential. The ten domain lines below reproduce every row of the column for the technologist photogrammetry credential. ASPRS describes these allocations as approximate and notes that actual exam percentages may vary.

Six categories carry positive weight. The four rows listed at 0% are retained here only for source fidelity; they do not represent additional tested coverage on this credential. That means a candidate who spends weeks on lidar point-cloud classification or UAS flight regulations is, according to the matrix, studying outside the scored scope. Our complete domains guide covers each row in more depth.

Fees and Registration Mechanics

The dated June 2026 manual lists the following ASPRS application fees. A separate Prometric examination charge is additional.

The sequence is: submit your application with references and ethics declaration, wait for ASPRS review and approval, then schedule with Prometric. Scheduling details and windows are covered in CPT Exam Dates.

Attempt Limits and Timing Rules

Several rules shape how you should plan the calendar:

1. Six months to test. Approved applicants must take the examination within six months of approval.
2. Two attempts per approved application. After an unsuccessful first attempt, one retake is allowed within six months of that attempt. An extension request is possible for extenuating circumstances.
3. Retake costs. Prometric charges apply to the retake.
4. Second failure resets the process. A second unsuccessful attempt requires a new application, new fees, and updated references.

The practical lesson: do not apply until you are close to ready. The six-month window starts running at approval, and a rushed first attempt burns one of only two tries. Pair this with the guidance in our CPT study guide when deciding when to submit.

Recertification on a Three-Year Cycle

Technologist recertification follows a three-year cycle. Some generic language elsewhere in the ASPRS guidelines refers to a five-year cycle, but the technologist-specific rule is three years, and that is the one that applies to you.

• 60 professional development hours over the cycle
• Four references
• A recertification application fee ($125 member, $325 non-member under the June 2026 manual)
• Continuing employment may contribute no more than 30 of the 60 hours

That 30-hour cap on employment credit means at least half of your hours must come from other qualifying professional development activities. Start logging hours early in the cycle rather than reconstructing three years of activity in the final month.

Who Hires Technologists and Where the Credential Fits

Photogrammetric technologists typically work in settings where imagery becomes measured, mapped data: aerial mapping and surveying firms, engineering and geospatial consultancies, and public agencies that maintain topographic, planimetric, or base-map datasets. The day-to-day work often involves stereo compilation, orthophoto production, aerotriangulation support, and quality control of mapping deliverables.

The credential serves as a documented signal of competence and professional standing, which can matter on proposals and staffing requirements. We deliberately make no claim here about a certification-driven pay premium, since none is verified. If you are weighing the decision financially, read Is the CPT Certification Worth It? and the CPT salary guide with that caution in mind, and browse CPT jobs for the kinds of roles where it is relevant.

A Domain-Weighted Preparation Sequence

Because one category holds roughly 70% of the matrix, your calendar should be lopsided on purpose. Here is a sequence that front-loads the heavy material and leaves the lighter categories for shorter passes.

Notice what is absent: dedicated weeks for remote sensing, GIS/LIS, lidar, or UAS. Those rows carry 0% on this credential's column. A one-page summary of must-know facts, like our CPT cheat sheet, is a useful final-week companion, and you can pressure-test yourself with the questions on the main practice test site.

If you want repeated timed exposure to the question style before booking Prometric, the CPT Exam Prep practice tests are built for that purpose, and you can start from the practice test home page at any point in your preparation.

Frequently Asked Questions