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View Full Version : Tokina Flare & CA Test


drisley
10th of November 2004 (Wed), 09:14
Sure, I bet yall are sick of hearing about the Tokina ATX 17mm Pro lens.
But, I hope some might find this information useful.

I took the camera out early this morning, and tried to take a picture almost directly into the rising sun to test for flare resistance.
Also, I had alot of tree braches against the blue sky, so this was a good test for chromatic abberation, blue/purple fringing (I'm never sure of the correct term for this).

Anyway, I think the lens did an AWESOME job with flare, especially considering this is an ultra wide lens. There is no loss of contrast, and only 3 small flare circles that are actually a little hard to find. Colour me impressed again!

As far as fringning goes, this lens also did a very good job for an ultra wide. Compared to the 18-55mm, or even the 85F1.8 prime, this lens blows them away in this department. And from what I've seen of pictures from the Canon ultra wide L zooms, it performs just as well in this department.

Anyway, enough blathering.
HERE is the link (http://www.mts.net/~lftbrain/20d/tokina_flare.jpg) to a 100% crop, shot Raw and converted with EVU (hence the missing EXIF).
I think the aperture was at F8. Again, this is a very extreme condition that the lens handled very well in my opinion (amazingly well as far as flare is concerned).

drisley
10th of November 2004 (Wed), 09:20
I should add that if you look at THIS (http://img2.dpreview.com/gallery/canoneos10d_samples1/originals/030315-1453-32.jpg) picture taken with the $1200 Canon 17-35L lens, you will notice much more "fringing", especially in the trees on the top right corner.

Scottes
10th of November 2004 (Wed), 09:26
I'm impressed.

Please send me that lens. Pretty Please?

roanjohn
10th of November 2004 (Wed), 09:30
Is it just me or do I see a cyan and violet fringing?? it looks odd. :?

Ro1

drisley
10th of November 2004 (Wed), 09:52
Is it just me or do I see a cyan and violet fringing?? it looks odd. :?

Ro1
Hmm, there is a little as I had mentioned, but really it's not bad at all for an ultra wide lens. All ultra wide angle lenses will exhibit some fringing in conditions like this.
It might have something to do with the blue sky and the evergreen combination maybe? Also, this is a very extreme shot, and I haven't noticed anything like this before on my regular pictures.
I just printed this picture and the fringing doesnt show up at all.

drisley
10th of November 2004 (Wed), 10:18
I'm impressed.

Please send me that lens. Pretty Please?
:lol: :lol:

Olegis
10th of November 2004 (Wed), 14:29
Great performance, drisley !
Now I want this lens even more ... :cry:

drisley
10th of November 2004 (Wed), 15:13
Hehe, yeah, it's pretty decent especially considering the price.
I put a few more images here (http://photography-on-the.net/forum/viewtopic.php?p=338840#338840).