Zeiss Formula
The Zeiss formula is a supposed formula for computing a circle of confusion criterion for depth-of-field calculations.
The Zeiss formula states that the maximum acceptable diameter of the circle of confusion equals the diagonal length of the image sensor format divided by 1,730.
Formula
![Copy to Clipboard QuantityVariable[Subscript["d", "CoC"], "Length"] == QuantityVariable["d", "Length"]/1730](https://www.wolframcloud.com/objects/resourcesystem/marketplacestorage/resources/7d2/7d24b1a5-c166-4598-a104-073d128a0a2f/Webpage/FormulaImage.png)
| symbol | description | physical quantity | 
|---|---|---|
| dCoC | maximum acceptable diameter of circle of confusion | "Length" | 
| d | diagonal length of image sensor format | "Length" | 
Forms
Examples
Get the resource:
| In[1]:= | ![ResourceObject["Zeiss Formula"]](images/7d2/7d24b1a5-c166-4598-a104-073d128a0a2f-io-1-i.en.gif) | 
| Out[1]= |  | 
Get the formula:
| In[2]:= | ![FormulaData[ResourceObject["Zeiss Formula"]]](images/7d2/7d24b1a5-c166-4598-a104-073d128a0a2f-io-2-i.en.gif) | 
| Out[2]= |  | 
Use some values:
| In[3]:= | ![FormulaData[ResourceObject["Zeiss Formula"], {QuantityVariable[
\!\(\*SubscriptBox[\("d"\), \("CoC"\)]\),"Length"] -> 
   Quantity[0.2`, "Millimeters"]}]](images/7d2/7d24b1a5-c166-4598-a104-073d128a0a2f-io-3-i.en.gif) | 
| Out[3]= |  | 
 
                 
                