Stops from ISO 100 to ISO
Type a value in stops to get it in ISO instantly.
That's 10,086,913,586,276,987,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000× as fast as an extreme low-light setting — nothing on our list beats it. That is 400 stops from ISO 100.
Convert the other way: ISO to stops
What it means
How sensitive is that?
Digital cameras quote an ISO-equivalent sensitivity. Above the base ISO the sensor is not more sensitive, only amplified — which is where the noise comes from.
The math
How to convert stops to ISO
DIN is logarithmic and ISO is not: DIN = 10 × log₁₀(ISO) + 1, so every doubling of ISO adds three DIN degrees.
Example: 400 stops = 2.582×10¹²² ISO.
Every unit
Your speed in every unit
Tables
stops to ISO conversion table
| stops | ISO |
|---|---|
| -2 stops | 25 ISO |
| -1 stops | 50 ISO |
| 0 stops | 100 ISO |
| 1 stops | 200 ISO |
| 2 stops | 400 ISO |
| 3 stops | 800 ISO |
| 4 stops | 1,600 ISO |
| 5 stops | 3,200 ISO |
| 6 stops | 6,400 ISO |
| 7 stops | 12,800 ISO |
ISO to stops conversion table
| ISO | stops |
|---|---|
| 25 ISO | -2 stops |
| 50 ISO | -1 stops |
| 100 ISO | 0 stops |
| 200 ISO | 1 stops |
| 400 ISO | 2 stops |
| 800 ISO | 3 stops |
| 1,600 ISO | 4 stops |
| 3,200 ISO | 5 stops |
| 6,400 ISO | 6 stops |
| 12,800 ISO | 7 stops |
Quick answers
Quick answers
- How many ISO is 1 stops?
- 1 stops is 200 ISO.
- How many ISO is 10 stops?
- 10 stops is 102,400 ISO.
- How many ISO is 400 stops?
- 400 stops is 2.582×10¹²² ISO.
The units
About these units
Stops from ISO 100 (stops)
How many doublings away from ISO 100 the speed is.
ISO (ISO)
The modern arithmetic speed, the number on the box.
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