FAQ FAQ  Forum Search   Events   Register Register  Login Login

Sony A58 Focus Adjustment?

Author
TPhoto View Drop Down
Newbie
Newbie

Joined: 20 March 2021
Country: United States
Location: 60440
Status: Offline
Posts: 2
Post Options Post Options   Quote TPhoto Quote  Post ReplyReply Direct Link To This Post Topic: Sony A58 Focus Adjustment?
    Posted: 20 March 2021 at 19:59
So, I have a Sony A58 & have been using a Tokina AT-X Pro, 28-70 2.8 with it. I have been struggling with photos looking a bit off on sharpness which is odd for that lens as well as the A58 itself. I did a focus test using a calibration grid & it seems to be focusing just past the actual subject leaving me VERY slightly out of focus when I'm below F7. Is there any way to make an adjustment? I have searched the forums & can't seem to find an answer anywhere.

Apologies if I'm repeating a topic!
 



Back to Top
neilt3 View Drop Down
Senior Member
Senior Member

Joined: 13 September 2010
Country: United Kingdom
Location: Manchester.U.K
Status: Offline
Posts: 2797
Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2021 at 20:31
Welcome to the forum .

For micro focus adjustment you need an a68 , a77ii , a900 , a850 , a99 or a99ii .

For the a58 , your out of luck , manual focus or another lens is your only option if it misses focus .
Or stop the lens down more , but that's not likely what you got an f/2.8 for .
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
C & C welcome.
Back to Top
Miranda F View Drop Down
Senior Member
Senior Member

Joined: 11 January 2014
Country: United Kingdom
Location: Bristol
Status: Offline
Posts: 3847
Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2021 at 23:13
... or an A7 of some kind + LA-EA4.

I'm afraid for critical focus on the A58 you need to use MF. But the focus
peaking works very well. I use yellow and set it low for sharp lenses, medium for softer lenses.

Other ways are (1) to set AF-S and step back slightly after locking focus, or (2) switch to MF after locking AF, using either the lens switch (for SAM/SSM/HSM lenses) or the switch on the camera (for screw-drive lenses), and turn the focus ring with peaking. There is unfortunately no DMF mode on the A58.

For portraits where you have plenty of time to press buttons you can combine switching to MF with focus magnify (use gear menu3 to select focus magnify on the aperture preview button). Of course the A58 doesn't have fully customisable buttons either ... but most things can be done somehow.

If you have any more detailed questions you can ask them here or PM me. I still have an A58 and also Gary Friedman's excellent book for the bits I've forgotten. For example he says you can have focus peaking and focus magnify on at the same time, which I don't think I've done. He says turn peaking level high for this, and it's easier to see in b/w so set creative styles to b/w and use raw+jpeg to keep the raw colour image.

The A58 does miss out on a lot of modern clever stuff, but you can still nail focus with it if you take the trouble. Oh, I found that you can take a dozen shots in AF and get a range of actual focussing positions, and some are usuauly sharp. You can't judge misfocus in one image.

Edited by Miranda F - 20 March 2021 at 23:35
Miranda F & Sensorex, Sony A7Rii, 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 ...
Back to Top
QuietOC View Drop Down
Senior Member
Senior Member

Joined: 28 February 2015
Country: United States
Location: Michigan
Status: Offline
Posts: 3428
Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2021 at 23:37
I believe all the E-mount cameras (except the Alpha 1) offer focus adjustments with the LA-EA2 & LA-EA4. The A3000 is somewhat like the A58. It has the same sensor and a similar looking body, though not as nice.

Edited by QuietOC - 20 March 2021 at 23:47
Sony A7RIV NEX-5T HVL-F45RM LA-EA5 Metabones-IV Sigma MC-11 Yongnuo EF-E II TLT ROKR MD-NEX KR-NEX DA-NEX
Minolta Maxxum 600si
Pentax Q7 5-15 15-45/2.8 8.5/1.9 11.5/9 AF-P/Q
Back to Top
Phil Wood View Drop Down
Senior Member
Senior Member

Joined: 24 March 2013
Country: United Kingdom
Location: England
Status: Offline
Posts: 1933
Post Options Post Options   Quote Phil Wood Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2021 at 00:56
Originally posted by neilt3 neilt3 wrote:

Welcome to the forum .

For micro focus adjustment you need an a68 , a77ii , a900 , a850 , a99 or a99ii .



Also the A77.
Back to Top
TPhoto View Drop Down
Newbie
Newbie

Joined: 20 March 2021
Country: United States
Location: 60440
Status: Offline
Posts: 2
Post Options Post Options   Quote TPhoto Quote  Post ReplyReply Direct Link To This Post Posted: 22 March 2021 at 00:35
Wow, thank you all for the input. At this point I'm sticking with my A58, it does a good enough job for my needs. I'm keeping my eyes open for an A68 with a reasonable shutter count & price. I'm retired & don't want to sink a whole lot of money in to this. I'm an old Minolta guy from the days of film & commercial labs. I selected Sony because I could use a lot of my older lenses.

Love the "step back slightly" solution. Such a simple concept that never occurred to me, it's genius! (meant sincerely). I've played with the focus peaking on white & didn't love it, yellow makes HUGE difference. Also used it to check the focus deviation & it confirmed the problem. No big surprise because I'll run 200-500 shots on a shoot & find myself often sifting for an images with sharp detail.

Again, thank you all for the input!
 



Back to Top
Dyxum main page >  Forum Home > Equipment forums > Camera Talk > A-mount APS-C

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.109 seconds.

Monitor calibration strip

Dyxum.com - Home of the alpha system photographer

In memory of Cameron Hill - brettania

Feel free to contact us if needed.