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50 1.4 comparisons
Posted:
Sun Apr 01, 2007 7:26 pmby jben_net
Hi Everyone. I've been getting some really odd effects with my 1.4 often photos come out looking like they've had a blur filter put through on a seperate layer. So I got my bro's 50mm lens and compared it to mine. The shot on the left is from my lens.
So there seems to be a problem here. How much does lens reconditioning cost? I can see a bit of dust in the lens floating deep inside.
Posted:
Mon Apr 02, 2007 1:01 amby Yi-P
Were the shots taken with a tripod and focused/exposed manually?
Posted:
Mon Apr 02, 2007 9:19 amby jben_net
auto focus on tripod
Posted:
Mon Apr 02, 2007 9:23 amby gstark
The dust would rarely be an issue.
I presume that tehse were each taken using the same body?
Did you try comparing what happens if you use manual focus with each of the lenses?
Posted:
Mon Apr 02, 2007 12:07 pmby jben_net
Yes they were both taken on the D00. I'll do some more testing and get back to you.
Posted:
Mon Apr 02, 2007 12:27 pmby jben_net
the weird thing is that when my lens is stopped down to f4.5 it looks just as good as my bro's :
(also, these were on timer, so there was no chance of camera shake when pushing the button)
Posted:
Mon Apr 02, 2007 12:37 pmby jben_net
Oh just to make it clearer the first image i posted was both lenses set to 1.4
Posted:
Mon Apr 02, 2007 12:42 pmby Alpha_7
Has your lens recieved any hard knocks or any mistreatment ? Do you have filters on either lens ?
Posted:
Mon Apr 02, 2007 6:55 pmby Yi-P
Try focusing manually on both lenses, and mount the lens on same body without moving the tripod?
Posted:
Tue Apr 03, 2007 7:51 pmby skyva
At f4.5 the depth of field may be sufficient to overcome focus issues. I would have a look at that. I would also print out one of those often maligned focus test sheets and see if it front or back focuses. I am a bit of a nerd and test all my lenses that way but they are all fine (more or less) including my 50mm 1.4.