Some test pattern shots

[Bear Dale]

I printed the test pattern out and shot these hand held from fairly close with a desk lamp illuminating the page which was A4.

















The correct procedure should be -

1. Use a tripod

2. Without a remote release use the timer?

3. Have the test pattern perfectly flat on a wall.

4. Have the camera on the same plane as much as possible.



What light is the best ?

What distance is the best?

Any hints to test the lens and if I have the testing procedure correct?

--
Cheers,
Jim

 

[axlotl]

I printed the test pattern out and shot these hand held from fairly close with a desk lamp illuminating the page which was A4.





The correct procedure should be -

1. Use a tripod

2. Without a remote release use the timer?

3. Have the test pattern perfectly flat on a wall.

4. Have the camera on the same plane as much as possible.

What light is the best ?

What distance is the best?

Any hints to test the lens and if I have the testing procedure correct?

--
Cheers,
Jim

HI Jim, You need to find out from the maker of the chart what is the correct distance expressed as a multiple of the focal length required between the focal plane mark on the camera and the chart. Check carefully if the reference is to actual focal length or 35mm equivalent.

You will likely end up with 9 of those A4 charts on a cork board, wall or whatever about 900x1200mm in size.

Good luck

Andrew

 

[Bear Dale]

Thanks Andrew

 

[Bear Dale]

Here's a few more using a tripod and timer -





















--
Cheers,
Jim

 

[Jerry045]

Here's a few more using a tripod and timer -





--
Cheers,
Jim

Jim:

First off, you will find your best results will be if the chart is square with your sensor. The ISO chart is tilted down on the left.

The TV chart will hardly be any sort of challenge for your camera.

On the ISO chart, you do not want to see the black border. You want the 3:2 arrows to be at the limit of your view finder and the upward and downward arrows to hit the top and bottom of your viewfinder.

Like this:



The numbers on the horizontal and vertical lines will now be calibrated in lines per vertical height and horizontal width. Multiply them by 100.

The very best number on that chart is 2000 LPH (20 x 100).

Your camera should easily resolve those. You probably want to dial in about +1EV, as the white background will cause the camera to under expose.

Use a tripod, turn off stabilization, use a remote shutter release and if you don't have one, use the 10 second self timer.

--
Jerry
http://www.flickr.com/photos/av8tor045

 

[Bear Dale]

Thank you very much Jerry, its a warm sunny afternoon here and I have a few hours. I'll read back over what you wrote and go and shoot some more test shots.

Much appreciated.