Back-Focus Chart

[Vigen Vartanov]

Good day. On this days i will calibrate my lences.
Can some body send me file of Focus Chart. I did not found good resolution for printing , if some body have it please upload it some where .
Many Thanks.

 

[jbeale]

Maybe some of these will help you.
http://www.bealecorner.org/red/test-patterns/index.html

Star charts are often used for focus:
http://www.bealecorner.org/red/test-patterns/star-chart-bars144-600dpi.png
http://www.bealecorner.org/red/test-patterns/star-chart-bars-full-600dpi.png

Any 600 dpi laser printer, or inkjet printer (using good quality photo paper) can print a sharp pattern using these. Of course you can also buy various charts.

 

[Vigen Vartanov]

Yes thanks.That is it i will print on best printer
Also yes i will buy it, problem is that this time i did't get it when i was in US ,
And in my region i can not found something like this.
Thanks.

 

[Mark Pedersen]

don't drop acid and stare at the star chart