Page 1 of 1
How to stop blur at the extremes of an image?
Posted:
Sat Nov 29, 2008 8:46 pmby shazzm
I have a picture of my dad (which is very unusual as he is cameraphobic lol), but i seem to only focus in the centre of the picture.... any suggestions on keeping the whole image in focus? Thanks
nikonD60 f/5.6 1/125 sec. ISO 400 55-200 lens
http://www.flickr.com/photos/sharynmayne/3067114853/
Re: How to stop blur at the extremes of an image?
Posted:
Sat Nov 29, 2008 9:24 pmby chrisk
stop the aperture down some more. try f11 next time. the smaller the aperture the greater the DOF.
Re: How to stop blur at the extremes of an image?
Posted:
Sat Nov 29, 2008 9:29 pmby aim54x
Rooz wrote:stop the aperture down some more. try f11 next time. the smaller the aperture the greater the DOF.
Beaten to it, Rooz it right on. You have used the lens wide open and focused very close (for this lens anyway) hence your depth of field is fairly small. Stopping it down will help to grab you some more DOF.
Re: How to stop blur at the extremes of an image?
Posted:
Sat Nov 29, 2008 10:11 pmby blacknstormy
flikr is doing bad things - have no photo
Re: How to stop blur at the extremes of an image?
Posted:
Sat Nov 29, 2008 10:32 pmby [kane]
Same as above, but I'd add one thing, use f22 and a tripod, as the lower (higher number) the f stop the less light, so at this close crop you might get some blur.
Good luck, great shot
btw, very sharp.
Re: How to stop blur at the extremes of an image?
Posted:
Sat Nov 29, 2008 10:54 pmby DaveB
Just in case it's not clear, the problem here isn't that the areas towards the edge of the frame are out of focus, but just that the in-focus area is a fixed distance from the camera. The smaller the aperture (the larger the value) the greater the depth of in-focus areas in front of and behind that distance...
Re: How to stop blur at the extremes of an image?
Posted:
Sun Nov 30, 2008 12:04 amby shazzm
oh yeah, I see what u mean... i just took a shot at f5.6 then one at f32 and it makes a big difference. Thanks guys, that was helpful. With help like that I won't be a newbie for long lol
Re: How to stop blur at the extremes of an image?
Posted:
Sun Nov 30, 2008 12:19 amby aim54x
shazzm wrote:oh yeah, I see what u mean... i just took a shot at f5.6 then one at f32 and it makes a big difference. Thanks guys, that was helpful. With help like that I won't be a newbie for long lol
Glad to hear that we have helped someone, keep the questions coming, so we can all learn!!!
Re: How to stop blur at the extremes of an image?
Posted:
Sun Nov 30, 2008 5:11 pmby Matt. K
Just one other point....you have focused on the end of his nose....there is nothing in front of his nose but there is some lens sharpnes (depth of field) not being used in front of his nose. If you had focused on his eyes then the tip of his nose would still have been reasonably sharp and the edges of the frame would have been sharper because the available DOF would have been moved backwards. I hope this makes sense to you.