Poor Man's Fine Tune/Micro-Adjust: This works in the field or in a pinch too. Use three cans for shorter focal lengths and use five cans for the longer focal lengths. So you can see...

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Poor Man's Fine Tune/Micro-Adjust

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Jan 5, 2015 15:27:14 #

RRS Loc: Not sure

This works in the field or in a pinch too. Use three cans for shorter focal lengths and use five cans for the longer focal lengths. So you can see even three cans give you about 8", 4 on either side of center. Set the cans at about 20 degrees off center and so that the small print shows. Any questions?

(Download)

Jan 5, 2015 15:42:24 #

imagemeister Loc: mid east Florida

This will work, and may help ....but a rough/coarse way of doing it .....if you are taking the time and trouble to do this, may as well get the highest precision possible !

Jan 5, 2015 15:44:05 #

nicksr1125 Loc: Mesa, AZ

Here's a more accurate focus test that's free.
http://regex.info/blog/photo-tech/focus-chart

Jan 5, 2015 15:44:21 #

CHG_CANON Loc: the Windy City

Shouldn't they be cans of adult beverages, recently emptied, to make the effort more challenging? :-)

Jan 5, 2015 15:46:00 #

GoofyNewfie Loc: Kansas City

This one is less expensive and more accurate:
http://regex.info/blog/photo-tech/focus-chart
Drinks are on you though!
(CHG_CANON :thumbup: )

Nick beat me to it.

Jan 5, 2015 17:43:35 #

MT Shooter Loc: Montana

RRS wrote:

The cans are unnecessary, that tape measure is the very best tool to use for the job all by itself.

Jan 5, 2015 18:20:07 #

RRS Loc: Not sure

MT Shooter wrote:

The cans are unnecessary, that tape measure is the very best tool to use for the job all by itself.

That all depends! If you are checking a 300mm with a 1.4 TC out at 35' the minimum distance a tape measure is hard to see. If you are out and things are looking off 5 cans of beer or pop are easy to come by. I do have the LenAlign system minus the long ruler (yard stick) that they want a fortune for but I bought mine for under $3.00 at Home Depot. And how are you going to set up a tape measure at the right angle and hold it there.

Jan 5, 2015 18:25:05 #

RRS Loc: Not sure

imagemeister wrote:

This will work, and may help ....but a rough/coarse way of doing it .....if you are taking the time and trouble to do this, may as well get the highest precision possible !

I agree but I have been out shooting with friends and have had someone say that they think their focus is off, didn't bring the tape measure with me, oh darn. We were able to come up with 5 cans of pop and set this up at about 65' and get it pretty close, in the field. I have the Lens Align permanently set up at home on a measured range

Jan 5, 2015 18:33:15 #

RRS Loc: Not sure

nicksr1125 wrote:

Here's a more accurate focus test that's free.
http://regex.info/blog/photo-tech/focus-chart

I've tried that and while it may work for short focal length lenses it's not very good with long lenses, been there and tried it. And if you read up on the gentleman that came up with that chart you'll see that he worked with the company that came up with the "LemsAlign" and has said there are better ways to go. Here is what I use at home.

(Download)

Jan 5, 2015 18:34:37 #

RRS Loc: Not sure

CHG_CANON wrote:

Shouldn't they be cans of adult beverages, recently emptied, to make the effort more challenging? :-)

I agree, but to some it's already too challenging to start with.

Jan 5, 2015 18:35:53 #

RRS Loc: Not sure

CHG_CANON wrote:

Shouldn't they be cans of adult beverages, recently emptied, to make the effort more challenging? :-)

One more thing, when you empty the cans the wind plays hell with them!

Jan 5, 2015 18:38:28 #

RRS Loc: Not sure

GoofyNewfie wrote:

This one is less expensive and more accurate:
http://regex.info/blog/photo-tech/focus-chart
Drinks are on you though!
(CHG_CANON :thumbup: )

Nick beat me to it.

Hey I like what you have been shooting, some pretty good stuff :thumbup:

Jan 6, 2015 06:43:28 #

Erv Loc: Medina Ohio

I am very cheap. I use an old wooden yard stick to check mine. The numbers are very sharp on it and seems to work great. :)
Erv

Jan 6, 2015 08:23:16 #

jerryc41 Loc: Catskill Mts of NY

CHG_CANON wrote:

Shouldn't they be cans of adult beverages, recently emptied, to make the effort more challenging? :-)

There's no limit to what you can line up, depending on will be seeing that line-up. :D

Jan 6, 2015 08:24:25 #

jerryc41 Loc: Catskill Mts of NY

More -

Focusing Charts
http://mansurovs.com/wp-content/uploads/2012/07/Siemens-Star-Focus-Chart.pdf
http://mansurovs.com/wp-content/uploads/2012/07/Focus-Test-Chart.pdf
http://regex.info/blog/photo-tech/focus-chart

How to Check Focus
http://photographylife.com/how-to-quickly-test-your-dslr-for-autofocus-issues
http://www.nphotomag.com/2013/03/05/how-to-recalibrate-your-nikon-dslrs-af-autofocus/
http://www.luminous-landscape.com/essays/are_your_pictures_out_of_focus.shtml

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