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Short lens tests by Hawk

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Hawk View Drop Down
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Topic: Short lens tests by Hawk
    Posted: 22 February 2019 at 00:56
Since I'm about to sell most of my old manual lenses I have to preform some test to compare them and decide which ones to keep and which ones to sell. I'll be adding all tests to my web page, but for easy access for Dyxum members I'll be linking them here as well.

Disclaimer: all my lens tests are amateur tests. I do not have the time and the equipment to carry them out professionally, so I just used printed test charts. Although my tests can help you make a decision, you should not use them for the final evaluation of whether the lens is good or bad. It should also be remembered that sometimes different copies of the same lens can give different results. All images except the color test are saved in JPG directly from RAW without any modifications. Sharpness/resolution tests are available in the original size. Color tests are modified by setting the black and white points to the darkest and lightest pixels to eliminate discoloration and casts caused by other sources than the lens itself.

Carl Zeiss Vario-Tessar FE 24-70mm F4 ZA OSS @ 24mm
Kiron MC 28mm F2
Minolta MD 28mm F2.8
Panagor PMC Auto Wide Angle 24mm F2.5
Samyang AF 24mm F2.8 FE
Sigma Super-Wide 24mm F2.8
Sony FE 28-70mm F3.5-5.6 OSS
Tokina RMC 24mm F2.8
Vivitar MC Wide Angle 19mm F3.8
Vivitar VMC Series 1 28mm F1.9


Edited by Hawk - 03 May 2019 at 18:03
 



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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 22 February 2019 at 11:19
In my experience test charts are a lot less useful and seriously uninformative unless very much more care is taken with them than most people can manage (See SLRgear blogs for confirmation of this), not least because at the short distances needed for non-tele lenses lenses tend to behave differently than they do near infinity where most images are taken.

After doing a lot of tests over many years, I have decided that by far the most useful tests are images of building(s) at least 50m away and large enough to cover most of the visual field even with wide-angle lenses. My favourite building has chrome handrails too which make CA obvious, and it is so easy to take a few lenses down to it and shoot them at every major FL and aperture down to f11. The results are not only very easy to see and compare but much easier to relate to real conditions in views.

If you are interested in sharpness near MFD you have to test for this separately (with charts if you like, so long as you vary the focus manually to allow for curvature of field), and many cheap modern zoom lenses perform much better than you'd think (and many older ones a lot worse!). The most stringent and simple test of macro sharpness I've come across is close-ups of a dandelion in its puffball seed state. Some of your favourite old tele lenses will be so bad they will make you weep!

Edited by Miranda F - 22 February 2019 at 11:22
Miranda F & Sensorex, Sony A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
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Aavo View Drop Down
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Post Options Post Options   Quote Aavo Quote  Post ReplyReply Direct Link To This Post Posted: 22 February 2019 at 16:10
Just to add to Miranda F experience.

If such a good buildings are not avalialbe for shooting or even when the weather is not supporting your sessions, find

a) a brick wall, where bricks are colorfull and with contrasy structure.

b) a wallpaper, preferably with "3D" structure, if possible.

You can very easily see, witch lens is the best to keep.
a6500 & some nice e-mount lenses. Be fond of photography - this is the way to alleviate stress
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Hawk View Drop Down
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Posted: 22 February 2019 at 16:52
While I agree with most of what you wrote I don't have good building for lens tests anywhere near me. I have nice brick wall in front of my house, but personally I find results with test chart more informative for my current needs. I do have lots of samples from all of my lenses but I find it too hard to decide just based on these samples. Test chart fills a gap for me and makes decision easier.
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QuietOC View Drop Down
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 22 February 2019 at 17:03
Thank you for sharing. I've been wanting to start posting similar test/reviews on my website. I generally test all of my lenses when I receive them, so I have lots of content I could post.

Ideally you want a chart a similar size as your subject. My big chart does work much better with wide-ish lenses than the 12" x 18" print I used to use. I do wish it was flatter and larger, but it works fine. I still use the small print with long lenses.

The great outdoors here is too inconsistently lit. Papering the biggest indoor wall you can light well with small charts is a decent compromise.
Sony A68 A77II A6000 A7II LA-EA3 LA-EA4 MC-11
Minolta Maxxum 600si
Pentax Q7 5-15 15-45/2.8
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Hawk View Drop Down
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Posted: 22 February 2019 at 19:38
I'll be moving up with focal length so next lenses will be 24s - Sigma, Tokina, Panagor. I'll also test Samyang FE for comparison. When I'll finish or maybe earlier I'll try to add some scripts to easily compare test charts side by side for various lenses.
 



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Hawk View Drop Down
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Posted: 02 March 2019 at 17:01
I've added test of Sigma 24mm. Next week I'll be adding remaining three 24s and in second half of march I'll be posting 28s and if time will allow 35s.
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Posted: 04 March 2019 at 12:23
Tokina 24mm test is now online.
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Hawk View Drop Down
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Posted: 07 March 2019 at 22:26
Panagor 24mm test is online with short sum up of all three 24mm MF lenses. Tomorrow I'll add Samyang AF 24mm F2.8 test.
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Hawk View Drop Down
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Posted: 11 March 2019 at 00:52
With a small delay... Samyang AF 24mm test is online. Next one is 24-70mm F4 zoom at 24mm and then three 28mm lenses + 28-70mm zoom at 28mm.
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2019 at 19:59
Promised Carl Zeiss 24-70/4 test at 24mm is online.
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Hawk View Drop Down
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2019 at 19:07
Minolta MD 28mm F2.8 test added.
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Hawk View Drop Down
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Posted: 12 April 2019 at 15:02
Back to tests after having to switch priorities to more important things... Today I've added Kiron MC 28mm F2.
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Hawk View Drop Down
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Post Options Post Options   Quote Hawk Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2019 at 15:39
Just added short test of real gem - Vivitar VMC Series 1 28mm F1.9.
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