Test sharpness – 7artisans 35mm F1.2 lens

It’s good to know lens limitations and flaws to make better pictures with it. 7artisans 35mm F1.2 is fast, so it is expected that F1.2 is soft.

When it comes to real shots, I’d use at least F2.8 for whole frame pictures, and F1.2-F2.0 range for center image objects.

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at F1.2

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at F2.8

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F1.2 (purple fringing in the center)

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F1.4 (still visible vignetting in the corners)

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Barrel distortion of 7artisans 35mm F1.2 (shot at F2.8)

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I like how 7artisans 35mm F1.2 performs in the center, and it just depends on the situation which aperture to use, F1.2-F2 is greatly working for many cases.

I think this lens will get actively used in the next few months : )

Landscape shots at F1.2 – F4 range

Here’s good example when F2.8-F4 is required to get better details in frame borders, otherwise it looks very distractive. For the landscape I’d always set at least F4 if I don’t plan to crop the frame.

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7artisans 35mm @F1.2
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7artisans 35mm @F1.4
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7artisans 35mm @F2
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7artisans 35mm @F2.8
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7artisans 35mm @F4
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7artisans 35mm @F5.6
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7artisans 35mm @F8
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7artisans 35mm @F16

 

Curvature + sharpness test

Here is the sequence of shots taken from a tripod at different apertures. I may be wrong but the lens may have slight focus-shift when changing aperture, so I’ve slightly refocused at the center for each image.

Borders and corners are almost roughly blurred at F1.2 – F2.8. The center is noticeably soft at F1.2-F1.4, which I like for portraits (and using Voigtlander 40mm F1.4 for that softness). I also see vignetting at F1.2-F2.0.

Samples below are resized to 1200px, you can look at full size here

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Looks like F2.8 is a good point where most of the frame has acceptable sharpness variations for general shots.

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You can also check live shot samples at public Flickr group 7artisans 35mm F1.2

4 comments

  1. Thank you for creating such an excellent, thorough and helpful test of this lens (and for the review that links to it and other posts relating to the lens). It’s incredibly helpful and unbiassed – all the facts are there and your analysis of the facts (i.e. which apertures to use for different situations) helps to give confidence in interpreting the results. You’re providing a great service and I think lots of us appreciate it.

    Liked by 1 person

    • Thank you for feedback Adrian!
      Each time I plan to purchase a lens I’m reading numerous reviews first (if they are available). In case of Mitakon 35mm F0.95 MK II and this 7artisans 35mm F1.2 I didn’t find good review or image samples so basically just went for adventure : ) As a result I’m just returning favor to all reviewers that helped me to learn more about other lens before the purchase. In my reviews I’m trying to expose everything that is typically important to know about lens.
      Each review is a subjective opinion, and I completely agree with you that adding more clear facts is the most important part and it helps to evaluate independently. I’m happy to know that listed information is useful, it inspires me to run further reviews once I have a chance.

      Like

      • I’m glad you are inspired and happy, I just wanted to you to know how helpful your efforts are. Didn’t want to leave it only to commenters on ‘certain forums’ with something negative to say. Your reviews/tests include exactly the tests that we all want to see (yet struggle to find), based on fact and logical conclusion … and free of the all-too-common waffle and glaring gaps that are found elsewhere. Refreshing to see someone wanting to share knowledge and ‘return the favour’. Enjoy.

        Like

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