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CropFactorDB: Authoritative Camera Spec Database + Lens Calculator

A subscription database service that maintains the single authoritative, manufacturer-verified crop factor and sensor specifications for every camera body ever made, paired with a real-time lens calculator that auto-populates accurate effective focal lengths. Photographers input their camera model once, then instantly see true specs and effective focal lengths for any lens without manual cross-referencing.

SAAS

19 weeks • 70% confidence

Value Proposition

Eliminates the 20-30 minutes per camera model spent cross-referencing conflicting specs across Canon, Nikon, Sony, and third-party sites. Provides a single source of truth with manufacturer contact trails, reducing purchasing mistakes and liability for rental shops recommending gear.

Target Audience

Professional photographers, photo educators, gear reviewers, camera rental shops, and photography schools who need accurate, auditable specs for client recommendations and educational content.

Key Features

  • Verified crop factor database for 500+ camera models with manufacturer source attribution
  • Real-time lens calculator: input camera + lens focal length, get accurate effective focal length
  • Batch comparison tool: overlay specs for 5+ camera bodies side-by-side
  • And more, with full implementation detail...

Tech Stack

PostgreSQL (spec database) Node.js/Express (API backend) React (frontend calculator UI) Stripe (billing)
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Original Problem

Photographers struggle with inconsistent crop factor specifications across camera manufacturers

Professional and amateur photographers waste time researching and cross-referencing conflicting crop factor values (1.5x vs 1.53x) when selecting lenses and calculating effective focal lengths for different camera bodies. Current solutions lack a standardized, authoritative reference, forcing photographers to manually verify specifications across multiple sources, leading to purchasing mistakes and miscalculated shot compositions.

Score: 17.5%