Need Some Good Eyes For Focus Test: I need someone to look at these and help me make sure that the focus is not to soft on my two Lens. I set up a rig at a 45 Degree Angle with a chart...

Morrisdh Loc: Pisgah Alabama

I need someone to look at these and help me make sure that
the focus is not to soft on my two Lens. I set up a rig at a
45 Degree Angle with a chart that I have. I centered the focus on the cross of the two Dark Lines. I used a Tripod and Remote Switch. I think they are OK but I wear glasses and may not be as sharp as I think. The Camera and Lens are all new and I want to know that the lens are tack sharp. I am trying to Photo Eagles. If I need to do another shot with the
100-400 zoomed out to 400mm let me know before I move the
rig.

#1 is with Canon 7D 100-400 L F/16 ISO 5000 focal length 200mm

#2 is with Canon 7D 24-105 L F/13 ISO 5000 focal length
105mm Thanks mdh

# 1

# 2

MT Shooter Loc: Montana

How can you do a true lens focus test at F13 and F16? The DOF is way to great to get an accurate representation. Shoot these tests at F2.8 (or whatever your maximum aperture is) in order to minimize the DOF to give an accurate view.

Morrisdh Loc: Pisgah Alabama

MT is the rest of the set up ok or do I need the 400 Zoomed all the way out?
mdh

MT Shooter Loc: Montana

Morrisdh wrote:

MT is the rest of the set up ok or do I need the 400 Zoomed all the way out?
mdh

To get an accurate representation with a zoom you need to test it at both extremes and check the results against each other for comparison. If the results are similar the AF Fine Tune will be totally effective. If they vary by quite a bit, you need to adjust for the focal length that you use the lens at most often.

Morrisdh Loc: Pisgah Alabama

MT Thanks I will do that here in a minute and re-post. mdh

400L at 100mm

400L at 400mm

24-105 at 24mm

24-104 at 105mm

Morrisdh Loc: Pisgah Alabama

MT here are the changes. mdh

rpavich Loc: West Virginia

Here is how you have to do it..

1.) Get the target just beyond your min focus distance.

2.) Shoot at an angle. USE A TRIPOD

3.) use the largest aperture you have to create the shallowest DOF.

Then the focus will be easier to see.

BONUS: for extra credit...

Take the shot into Photoshop or PS Elements.

do:

Filter > Stylize > Emboss.

You will see the part that's in focus pop out.

Morrisdh Loc: Pisgah Alabama

rpavich, Thanks I wasn't sure how close to get the camera
to the target. I can do that with the set up I have but use
a ruler. It being new camera and lens' I want to make sure
I don't need to send it to Canon for adjustment. Again Thanks
for your help. They look pretty close the way I did it but was
needing someone with better eye sight to look also. mdh

rpavich Loc: West Virginia

Morrisdh wrote:

rpavich, Thanks I wasn't sure how close to get the camera
to the target. I can do that with the set up I have but use
a ruler. It being new camera and lens' I want to make sure
I don't need to send it to Canon for adjustment. Again Thanks
for your help. They look pretty close the way I did it but was
needing someone with better eye sight to look also. mdh

The good news is that you don't have to send it anywhere... :)

Your camera has the ability to adjust the AF by lens...

Just do the focus test...then evaluate it, and then adjust as necessary.

Morrisdh Loc: Pisgah Alabama

rpavich, Thank Thank Thank you. I did what you and MT
explained and I got them set just right. Using Elements with
emboss helped tremendously. I did set by Lens and the 24-105L
was off more than the 100-400L but I was able to get them
the same. Now I owe you a sharp Photo of the Eagles.
:thumbup: :thumbup: :thumbup: mdh

rpavich Loc: West Virginia

Morrisdh wrote:

rpavich, Thank Thank Thank you. I did what you and MT
explained and I got them set just right. Using Elements with
emboss helped tremendously. I did set by Lens and the 24-105L
was off more than the 100-400L but I was able to get them
the same. Now I owe you a sharp Photo of the Eagles.
:thumbup: :thumbup: :thumbup: mdh

Judging from that uniform....it's we who owe you a thank you.. :thumbup: :thumbup:

GrahamS Loc: Hertfordshire, U.K

Do it this way:

http://support.nikonusa.com/app/answers/detail/a_id/18105/kw/Auto%20Focus%20Fine%20Tune/related/1

Doesn't matter what brand of camera you have....

rpavich Loc: West Virginia

GrahamS wrote:

Do it this way:

http://support.nikonusa.com/app/answers/detail/a_id/18105/kw/Auto%20Focus%20Fine%20Tune/related/1

Doesn't matter what brand of camera you have....

Funny that you posted that...I made a few of those

GrahamS Loc: Hertfordshire, U.K

rpavich wrote:

GrahamS wrote:

Do it this way:

http://support.nikonusa.com/app/answers/detail/a_id/18105/kw/Auto%20Focus%20Fine%20Tune/related/1

Doesn't matter what brand of camera you have....

Funny that you posted that...I made a few of those

That looks like it's in focus at zero...Bravo!

pigpen

Morrisdh wrote:

rpavich, Thanks I wasn't sure how close to get the camera
to the target. I can do that with the set up I have but use
a ruler. It being new camera and lens' I want to make sure
I don't need to send it to Canon for adjustment. Again Thanks
for your help. They look pretty close the way I did it but was
needing someone with better eye sight to look also. mdh

There is a feature in the 7D that allows you to make focusing adjustments. Once you do it, the camera saves the info and makes the adjustments every time you put that lens on. I just got my 7D a few days ago, so I can't be much help on exactly how to do it.