Hi,
I feel that that my Nikon 200..500mm lens is a little soft..
I am trying to satisfy myself that my lenses are delivering the resolution that is comparable with that photographs taken with similar equipment by professionals.
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My method is pretty basic:
I am using my D500 and D7000 DX format cameras.
I downloaded a standard resolution test image which I printed on A4 paper.
I take photographs of the image with my camera set up on a tripod at a distance from the target that fills the frame.
To ensure there are no parallax errors, I make sure that the center of the target is exactly the same level as the center of my camera sensor, that is set vertical and is perpendicular to the axis of camera to target.
The test is set up in open shade under the roof of my long verandah. the lighting is pretty even.
I change the aperture and take three photos with mirror up and a wireless trigger. I focus each shot manually using enlarged Live View. All the photographs are taken at the same ISO, being 100.
I change the focal length and move the camera to once again fill the frame and repeat the process.
I select the best image at each setting and print it at high resolution on my Epson R3000.
I then do a visual comparison with images with the target test print.
I know that this is pretty crude but I hope to get a more scientific appraisal of the relative resolution on my lenses under near perfect conditions.
My problem is that I need to record all the information as text on each photo to correctly identify them at comparison stage.
In PSE 2018 Information Meta Data it displays the speed, the aperture, the ISO and both the lens focal length and the 35mm focal length.
I insert the information into each photo as Text.
On my Zoom lenses I need to know at what actual focal length the photograph was taken, this information does not seem to be available Meta datas info.
Is there anyway that I can get this additional information ?
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