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Non-Minolta Lens Tests and Comparisons

Here's the picture:
Test Target Picture
White shaded area is shown below

Sigma 18-125mm f/3.5-5.6 DC SEND ME A LENS SEND ME A LENS
Sigma 18-125, 18mm, f/3.5
18mm f/3.5
Sigma 18-125, 18mm, f/5.6
18mm f/5.6
Sigma 18-125, 18mm, f/11
18mm f/11
Sigma 18-125, 18mm, f/22
18mm f/22
Sigma 18-125mm f/3.5-5.6 DC    
Sigma 18-125, 50mm, f/4.5
50mm f/4.5
Sigma 18-125, 50mm, f/5.6
50mm f/5.6
Sigma 18-125, 50mm, f/11
50mm f/11
Sigma 18-125, 50mm, f/22
50mm f/22
Sigma 18-125mm f/3.5-5.6 DC    
Sigma 18-125, 50mm, f/5.6
125mm f/5.6
Sigma 18-125, 50mm, f/11
125mm f/11
Sigma 18-125, 50mm, f/22
125mm f/22
Sigma 18-125, 50mm, f/38
125mm f/38

Test Conditions

Test Conditions Layout Image

Test Equipment: Maxxum 7D Camera on Tripod, 5600 HS(D) flash on tripod w/Stofen Omni Bounce, wireless,  +1.0 flash compensation.
Camera settings: Auto-Focus, Aperture Priority, ISO 100, Xtra-Fine JPG, 3008x2000, Auto White Balance, Natural Color, Anti-Shake OFF.

Method: Placed chart on wall. Placed flash about 3 feet (1 meter) from target,  45 degrees to the left and placed reflector to the right. Moved camera/tripod back as focal length increased to keep entire chart in frame.

Test Note

A note about these tests: These tests are not designed to be the final say in lens resolution/sharpness. I am NOT a pro. I am an amateur who is doing this for fun and for the benefit of others. My tests are designed to compare lenses relative to each other.

I have done my best to create a controlled environment. While the methods and conditions of this test may not be ideal, the point is to compare the lenses to each other, not individually. Also, keep in mind that these lenses are being used on a DSLR. The lenses may perform differently on a film camera.

Your mileage may vary. There are many other things that define a lens' quality. Distortion, weight, and focus speed are all factors in a lens' quality. After seeing some requests to compare these lenses, I searched and found no real side-by side tests, so I did one on my own and published the results to my website for the benefit of others.

Send me a lens!

Do you have a lens that you want to send me? I'm willing to accept any Minolta lens that someone wants to ship to me for this testing purpose. I'll be glad to accept it! I'll add the pictures to this list of comparisons. Contact me with any questions.