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-   -   A query (https://forums.steves-digicams.com/olympus-dslr-40/query-158204/)

Zeshane Aug 9, 2009 3:32 AM

A query
 
Hi all,

I recently went on a 12 day trip to the Northern part of my country with my Olympus E510 with kit lenses. I encountered a problem whioch I dont know is a problem or thats just how lenses work. With 40 - 150mm lens I couldnt focus on something that was within 1 feet range neither through auto focus or manual. I had to either move back or push the subject further in order to focus on it. As soon as the subject was a little further than 1 feet away, the lens focused perfectly.

The camera and lens are both under warranty but I'm not sure if that really is a problem.

Awaiting your views.

Zeeshan

zig-123 Aug 9, 2009 3:56 AM

You probably exceeded the minimum focusing distance that the lens is capable of.

Here is a link to a table showing the minimum focal length capable with this particular lens:

http://www.olympusamerica.com/cpg_se...345&page=specs

According to the table, minimum distance at 40mm is .93meters ( 35")with the arpeture @ f4




For more lens choices, go to the Olympus website in your country.

Mikefellh Aug 9, 2009 7:18 AM

Quote:

Originally Posted by Zeshane (Post 990198)
The camera and lens are both under warranty but I'm not sure if that really is a problem.

Sorry, but this is user error as "zig-123" pointed out...you were simply too close for this lens and there's nothing wrong with it:

Quote:

Originally Posted by zig-123 (Post 990199)
According to the table, minimum distance at 40mm is .93meters ( 35")

And the minimum lens focusing distance is marked on the lens (and should be marked on every lens for that matter).

On your 40-150 look where the red dot is for for aligning the lens for mounting on the camera and you'll see written "0.9m/2.96ft-∞" (the sideways 8 is the symbol for "infinity" or forever)...if you had the old version of the 40-150 it's range is "1.5m/4.9ft-∞." Anyway that is the range the lens can focus (either automatically or manually) and no closer.

The only way to get closer (besides using another lens) is to put a closeup filter/dioptre onto the 40-150 which makes the 40-150 near sighted, and then you could focus from a few cm to the dioptre number marked on the closeup filter, inverted in metres; if the number marked on the closeup filter was +2, then the focus range would be a few cm up to 1/2m, +3 means a few cm up to 1/3m, etc.

Zeshane Aug 9, 2009 11:39 AM

Thanks alot for all your help. I was getting worried for no reason. Guess I need to learn a hell lot to really understand photography.

Mikefellh Aug 9, 2009 5:09 PM

Just lucky you asked before sending it in! ;-)

Zeshane Aug 11, 2009 9:11 AM

yes and imagine the salesperson showing where the red dot is on the lens and reading 0.9m to me. It would ceryainly have been embarassing :P


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