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05-25-2019, 10:03 AM   #1
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Dale H. Cook's Avatar

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Yvon Bourque's Focus Charts - Where Are They Now?

I have read a number of posts, here and elsewhere, concerning Yvon Bourque's focus charts, but the links to obtain the chart are all dead links. Does anyone have a working link?

05-25-2019, 10:38 AM   #2
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Looks like it's available through Front and Back Focusing calibration. for a price. I guess no longer free to print yourself.

I've printed and used Yvon's charts back when they were free, but their quality was limited to the card stock I was using. I ended up getting this one off of Amazon, works well, amazon.com: DSLRKIT Lens Focus Calibration Tool Alignment Ruler Folding Card(Pack of 2): Camera & Photo?tag=pentaxforums-20&
05-25-2019, 10:40 AM   #3
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Use the one at the end of this article. http://www.kscameraclub.org/docs/pdfs/focus_test_chart_edited.pdf
05-25-2019, 10:50 AM   #4
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There is one here that can be downloaded.

Squit Photo

Sometimes the downloaded charts can look good on the screen, but depending on the quality of your printer and paper used will determine if it is usable or not. In the end you might find out it is better to purchase one.

05-25-2019, 11:14 AM   #5
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I felt a bit more ambitious after lunch than I did this morning, so I turned to a favorite online tool - the Wayback Machine at the Internet Archive. I used a link from a 2008 post of Yvon's from Pentax World for his revised chart. That was a dead link, and in the Wayback Machine the recent captures were either dead links or yielded damaged PDF files, but a capture from 2012 was successful.

Thanks for the links to alternative charts - I will try those charts as well.
05-25-2019, 01:56 PM - 5 Likes   #6
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QuoteOriginally posted by david94903 Quote
Looks like it's available through Front and Back Focusing calibration. for a price. I guess no longer free to print yourself.
I doubt 3.95 USD will break anyone's bank. Help Yvon out during his current health issues.
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