Risk gradient: How to estimate the shooting number when purchasing?

When you look at ads on Avito, a variety of numbers flash before your eyes: 25,000, 95,000, 180,000, 340,000 frames. Which of them is a “green zone”, and which one is better to bypass the carcass?

I have divided the shutter life into 3 color risk zones based on 14 years of repair experience.

1. Green zone (“Time Capsule”): From 0 to 30% of the passport resource

• For D750 / D610 this is **up to 45,000 frames**.
• For D850 - **up to 60,000 frames**.
• The car barely passed the test run. The mechanical condition is close to perfect. The resource of curtains is huge.

2. Yellow zone (“Workhorse”): From 30% to 80% of the passport resource

• For D750 - **from 50,000 to 120,000 frames**.
• The camera has been used extensively, but the safety margin is still high. This is an excellent choice for second hand purchases with good prices. discount price!

3. Red zone (“Critical shooting”): Over 100% of the passport resource

• For D750 - **over 150,000 frames**.
• For D850 - **over 220,000 frames**.
• The camera has already exhausted its official factory life. Curtains can fail at any time. Buy a carcass from “red zone” can only be done with the intention of immediately budgeting for a replacement shutter in the service.

Nikon critical mileage threshold table

Model series	Green Zone (Safe)	Yellow zone (Good bargaining)	Red Zone (High Risk)
D3400/D5600	Up to 30,000	30,000 – 80,000	Over 100,000
D610/D750	Up to 45,000	45,000 – 120,000	Over 150,000
D810/D850	Up to 60,000	60,000 – 160,000	Over 200,000