Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Learning
Photography Q&A
200mm f/4 lens focusing distance and blurry image at 1:1 magnification ratio
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Aligem" data-source="post: 836816" data-attributes="member: 63913"><p>Thank you for your massages and helpful suggestions. As Clovi said , I set the focus manually to get it as focus as possible for 1:1 ratio as closest distance and then I move back and forth on the macro rail by 1 Micrometer and the focusing blur become worse. I have done this by using M exposure mode and changed f/ at different numbers from 5.8 to 16 . The lighting changes as it should does. But the focusing has god better during course of change in settings which just made it better at the corners of the subject and I did try again but no more improvement. I have attached one image in here to see what I am speaking about. I realised by reading my book , if I change the focusing from Single to Dynamic area or centre weighted area may have better effect. I look through viewfinder and no changes , no sharp image , when I sit and change the position of the camera 45 degree to the subject it becomes more clearer image in the viewfinder so possibly there is no light enough into the sensor. But if this is the case why when I had the subject in the light box with fluorescent lighting and sitting in front of the subject with strong lighting , focusing did not happen at all? so I am going to experiment again and write in here about my findings and see your view about my process. Thank you for being friendly to respond to me.[ATTACH=full]421924[/ATTACH]</p></blockquote><p></p>
[QUOTE="Aligem, post: 836816, member: 63913"] Thank you for your massages and helpful suggestions. As Clovi said , I set the focus manually to get it as focus as possible for 1:1 ratio as closest distance and then I move back and forth on the macro rail by 1 Micrometer and the focusing blur become worse. I have done this by using M exposure mode and changed f/ at different numbers from 5.8 to 16 . The lighting changes as it should does. But the focusing has god better during course of change in settings which just made it better at the corners of the subject and I did try again but no more improvement. I have attached one image in here to see what I am speaking about. I realised by reading my book , if I change the focusing from Single to Dynamic area or centre weighted area may have better effect. I look through viewfinder and no changes , no sharp image , when I sit and change the position of the camera 45 degree to the subject it becomes more clearer image in the viewfinder so possibly there is no light enough into the sensor. But if this is the case why when I had the subject in the light box with fluorescent lighting and sitting in front of the subject with strong lighting , focusing did not happen at all? so I am going to experiment again and write in here about my findings and see your view about my process. Thank you for being friendly to respond to me.[ATTACH type="full"]421924[/ATTACH] [/QUOTE]
Verification
Post reply
Forums
Learning
Photography Q&A
200mm f/4 lens focusing distance and blurry image at 1:1 magnification ratio
Top