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Focusing problem

dactylor

By dactylor,
in Legacy Lenses

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dactylor Newbie

dactylor

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Hello,

 

I have myself a a 77ii and just got my 400mm 5.6 macro from sigma.
They said it should autofocus whitout problem but it doesnt.

I think the video would describe the video and show how strange it is.

http://youtu.be/7Jf5ny2juIM

Can someone tell me what is wrong whit my settings/the lens or camera.

Because it can focus but not whitout focusrestriction which is build in in the

camera.

Greets Jens

 

p.s. i set the af motor to slow so if somethings broke it wont brake it as soon.

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dactylor Newbie

dactylor

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The problem is when i dont use the in body focuslimiter it focusses always closer and if the lens is at minimum focussing distance it wont go back to infinety but the lens makes that weird sound. The weird part is when i use the lens focus limiter it happens already at 3.5m that the lens get stuck when i use the in body limiter it goes to around 2,5 meter whitout problem and then it will go back to infinety.

 

Greet jens

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    • Cameratose
      Bokeh?

      By Cameratose · Posted

      Shooting a cactus flower is probably where you do want to have nice bokeh. I can't recall which camera you're shooting, or maybe you haven't said, but using live view you can see what the shot will look like before you press the button. Try setting up on a flower or something stationary where you can control the background and see the changes different settings make. 
    • Pieter
      Bokeh?

      By Pieter · Posted

      That's what I got from your post here: When shooting at f/11, bokeh is indeed not something you should be concerned with, unless when shooting closeup. Nearly all lenses have a polygonal iris shape at f/11 which naturally gives a more edgy rendering of out of focus areas. @Cameratose's example is perfect for demonstrating the relevance of bokeh. To some extent you can influence the backdrop of a shot, but if it is busy foliage relatively close by, it'd better not be distracting from your subject. Some lenses are able to create a more pleasing background than others, even at the same aperture setting and focal length. For the impact of the entire image one might even argue that the smoothness of the background is as relevant as the sharpness of the subject.
    • Mr. Lips
      Bokeh?

      By Mr. Lips · Posted

      Like Cameratose, I usually go for as much depth of field as I can, but sometimes there is no getting around out of focus areas, such as a closeup of a cactus flower.  I guess, everything else being equal, I might be concerned about a lenses bokeh, but everything else is seldom equal.  At this point in my photography I think I have bigger problems than unattractive bokeh.

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