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A55 back focus

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jackal2008 View Drop Down
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Post Options Post Options   Quote jackal2008 Quote  Post ReplyReply Direct Link To This Post Topic: A55 back focus
    Posted: 31 May 2018 at 00:32
I got hands on 80 200 f2.8
Almost every photo is back focus at 200 f 2.8

I didn't aware of this issue with other shallow dof lenses like 135 2.8

Twisted the two screws under the flash for about 3/8 turn. Seems much better.

I wonder if this is the reason why my AF C was very blurry in the past.
 



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addy landzaat View Drop Down
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2018 at 06:59
How is your 135/2.8 now?
Why not follow me on Instagram? @Addy_101
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djfoxy View Drop Down
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Post Options Post Options   Quote djfoxy Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2018 at 16:40
Originally posted by addy landzaat addy landzaat wrote:

How is your 135/2.8 now?


héhé
Minolta: XG1/ D7D/<beercan>135 f2.8/ 35-70 f4/ 35-105/ 70-210 f4/ 100-200 f4.5</beercan>/ 500 f8/ 17-35 f2.8-4/   50 f1.7/   50 & 100 f2.8 macro
Sony: A58/ A77ii / 28-75 f2.8 SAM/ DT 35 f1.8/ 85 f2.8
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stiuskr View Drop Down
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Post Options Post Options   Quote stiuskr Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2018 at 17:32
Yeah, and there's the rub. Check all your other lenses now that you've moved the sensor and see how that adjustment affected them.
Rob Suits Jr.
a99M2 a99 a77 a700 KM7D|Min24/2.8 Min35/2 So50/1.4 So50/2.8 Min85/1.4G Tam90/2.8 Tam180/3.5|Tam17-50 CZ24-70G2 KM28-75D So70-200G1 So70-300G So70-400G1| SonyF60 AD200R2
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jackal2008 View Drop Down
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Post Options Post Options   Quote jackal2008 Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2018 at 19:29
tried with 135 2.8 and 50 1.7
all seem ok so far.
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addy landzaat View Drop Down
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 01 July 2018 at 08:27
Missed this, great!
Why not follow me on Instagram? @Addy_101
 



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