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Old April 30th, 2007, 12:38 PM
Allen Maertz Allen Maertz is offline
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Default Canon 50 1.4 L fringing vs 50 1.2 L (Asher)

Anyone,

After searching out past posts on this forum, here is a partial quote by Asher on the subject.

"I stopped using the 50 1.4 for my digital work because of birefringence, purple blue lines between high contrast areas that bother me and Chuck Westfall of Canon USA says is a lens-sensor issue specific for each particular combination and there's nothing to change that.

As far as fringing goes, I looked up the 50 1.4 USM at

http://www.photozone.de/8Reviews/len...0_14/index.htm

which charts this lens as one of the lowest fringing lenses around. However Asher seems to have hit the right combo. Asher, if you are out there, what body are you using? I'm teching out the D5 and wonder if anyone has had problems with this combo or perhaps with the 1Ds MkII.

There is a sample photo on the photozone site

http://www.photozone.de/8Reviews/len...MG_2811-01.jpg
which shows some purple in the trees to blue sky.

Also, I know most people love the 50 1.2 L and it is great for low light etc photos, but photozone shows fringing to be large on their summery page at

http://www.photozone.de/8Reviews/len...MG_2811-01.jpg

along with a photo which is probably optimized for showing the problem. However, their chart also shows this lens to have more then usual for a fixed focus lens. Is the going practice to just know to correct in software?

Perhaps high contrast tripod based shooters have gone to other adapted lenses for outdoor location or architectural work on the D5 or 1Ds MkII?

Thanks to users. I'm trying to stay in the Canon lens line before going to Zork type solution for fringing....... http://www.zoerk.com/pages/products.htm
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Old April 30th, 2007, 01:37 PM
Asher Kelman Asher Kelman is online now
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Hi Allen,

This is to aknowledge you and the fact that there are disparate views on the 50 1.2L. I have in line a write up of the lens behind other reviews.

Jack Flesher tried several 501.2 L samples and found them lacking and ended up being loyal to the EF 50 1.4. I'm using the 50 1.2L on the 5D and the 1DII.

I'm very happy with it. I have to carefully pixel peep and be critical to answer better than this right now.

Asher
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Old April 30th, 2007, 02:58 PM
Allen Maertz Allen Maertz is offline
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Quote:
Originally Posted by Asher Kelman View Post
Hi Allen,

This is to aknowledge you and the fact that there are disparate views on the 50 1.2L. I have in line a write up of the lens behind other reviews.

Jack Flesher tried several 501.2 L samples and found them lacking and ended up being loyal to the EF 50 1.4. I'm using the 50 1.2L on the 5D and the 1DII.

I'm very happy with it. I have to carefully pixel peep and be critical to answer better than this right now.

Asher
Thanks Asher,

As I gather more info, I'ts possible that I'll end up with two digital lens systems. One for hand holding and one for architecture/tripod. If I'm ending up down that road, I might as well optimize the Canon native lens line for what it does well. Probably it just boils down to the right tool for the job.

So, I'm trying to get whatever the lens solution(s) is onto the Canon 5D and see what I can squeeze out of the body related to the lenses, keeping in mind that there will be a body upgrade coming down the pike. I suspect that the dynamic range of the 5D chip is larger then the 1Ds MkII....the next factoid to check......
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