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An Opteka 85mm F1.4 Review

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drice23 View Drop Down
Newbie
Newbie

Joined: 21 June 2011
Status: Offline
Posts: 1 		Post Options Post Options   Quote drice23 Quote  Post ReplyReply Direct Link To This Post Posted: 21 June 2011 at 15:01
has anyone else tried this modification besides Exminolta. he has written great instructions, but I just want to know who all has tried this modification. I am wanting to try the mod for myself. I just need a confidence booster first.
 



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ponz View Drop Down
Senior Member
Senior Member

Joined: 22 November 2007
Country: United States
Location: Kansas City
Status: Offline
Posts: 1058 		Post Options Post Options   Quote ponz Quote  Post ReplyReply Direct Link To This Post Posted: 31 August 2011 at 02:36
Originally posted by teejay teejay wrote:

Just thought I'd share my evening's work: successful chipping of the samyang!! I followed Slipsale's guide on the french forum alphadxd, all you need is some two component epoxy patty, and a file. A 1h job.
Here are the results:


TJ,

Is that the M42-a/MAF ?? If so, did you file the small tab off the middle of the arc? No filing of the original lens mount? Simply build up some epoxy on the underside of the chip so it's flush with the ring?

Ponz
a900,& quite a few lenses
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Jocelynne View Drop Down
Senior Member
Senior Member

Joined: 17 June 2009
Location: United States
Status: Offline
Posts: 2819 		Post Options Post Options   Quote Jocelynne Quote  Post ReplyReply Direct Link To This Post Posted: 31 August 2011 at 03:55
WHAT A BLAST! I am totally impressed. What a wonderful group of experts, all of you! This is a terrific illustrated essay. A superb tour de force. Once again, I prove my policy: I always try to associate with people who are better than I am. Dyxum does it again. I love you all!   
Maxxum 450si, Sony A300, A700, A900 and a cubic meter of Alpha lenses
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utcreeper View Drop Down
Senior Member
Senior Member

Joined: 22 October 2008
Country: United Kingdom
Location: United States
Status: Offline
Posts: 1222 		Post Options Post Options   Quote utcreeper Quote  Post ReplyReply Direct Link To This Post Posted: 31 August 2011 at 11:49
I suspect the A77 focus peaking will make this a very popular lens, if only in my own bag.   
Me @ flickr

Various A-mount gear
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tigertimb View Drop Down
Alpha Eyes group
Alpha Eyes group

Joined: 22 November 2007
Country: United Kingdom
Status: Offline
Posts: 5630 		Post Options Post Options   Quote tigertimb Quote  Post ReplyReply Direct Link To This Post Posted: 31 August 2011 at 13:17
I'm looking forward to this aspect with a number of fast AF lenses too - with shallow DOF manual focussing when using the peaking or 1:1 is going to be a lot easier and also likely to give better results than focusing and recomposing.
Tim
If you appreciate comments on your photos, how about returning the favour to others . . .
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iullian View Drop Down
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Newbie

Joined: 12 April 2012
Country: Romania
Location: Arad
Status: Offline
Posts: 2 		Post Options Post Options   Quote iullian Quote  Post ReplyReply Direct Link To This Post Posted: 13 June 2012 at 12:01
Actually, I'm the unfortunate one that completely destroyed the chip while trying to glue it. I ended with glueing the entire chip and all the electronics were damaged. I tried to clean the connectors but... nothing happened. But, in my angryness I bought the A77 to solve the problem (focus peaking is a real marvel with this lens).
 



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patrik.f View Drop Down
Groupie
Groupie

Joined: 08 July 2012
Country: Sweden
Location: Stockholm
Status: Offline
Posts: 49 		Post Options Post Options   Quote patrik.f Quote  Post ReplyReply Direct Link To This Post Posted: 21 July 2012 at 07:20
I use the Samyang 85mm with A850. With the standard focusing screen(type L) I found fucusing very hard. Maybe I nailed 1 of 10.
First I replaced the focusing screen with a type M. That improved my results significant but not enough to make me confident. I considered to try the sony FDAM1AM magnifier but i understand that it decreases the viewable angle so in the end it wouldn't make focusing easier. After a while i read about the KPS eyepiece with 1.35 magnification. I bought one and it really made a difference. Now with enough light and a stationary object I manage to focus correct in 99% of the cases.
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