OOF 50mm 1.4 on 20D

David Kieltyka said:

I disagree here. IMO the lack of in-focus-ness elsewhere in the
photo draws your eye strongly to the child's eye. All the rest can
be considered extraneous in this particular case and thus benefits
from being blurred. It's a less-is-more approach.

Click to expand...

I'm glad you got what I was trying to do!

Lee Jay

Make sure you shot in one shot only.

The lens has a very poor focus mechanism, very sloppy.

At 1.4 I have yet to get a sharp photo closeup and the CA is bordering on terrible.

So at 1.4 you need to avoid bright white subjects especially street lights, shoot using "one shot".

What I have found though is at 1.4 it takes great outdoor scenes or even lowlight live shows where flashes are banned.

Finally is shooting at 1.4-2.0 do not use a UV filter, my experience is the filter causes even further loss of contrast perceived as lack of sharpness.

My lens has been fixed twice and the focus is just as poor and temperamental, hardware was replaced both times.

--
my 2 exposed flashcubes worth.

Ian the pbase supporter.
http://pbase.com/ianm_au
An amateur with dreams of being a good to excellent photographer.

Everybody thanks for your remarks. I think one of the problems shooting the 50mm at 1.4 in daylight is to much light in combination with shallow DOF en lots of CA/Blooming giving to little contrast for accurate AF.

Nevertheless my lens suffers from Backfocussing. Just have a look at http://www.dhaeze.nl/oof/ and give me your remarks. I also put sample of my 90mm Tamron macro.

With regards,

Peter

Peter Dhaeze said:

Nevertheless my lens suffers from Backfocussing. Just have a look
at http://www.dhaeze.nl/oof/ and give me your remarks. I also put
sample of my 90mm Tamron macro.

Click to expand...

Obviously backfocusing. One comment - remember that the focus sensors are black-and-white. Convert your shots of your focus target to B&W and you will see a potential problem.

Lee Jay

Problem? The target on the wall has to little contrast in BW?

Peter

ljfinger said:

Peter Dhaeze said:

Nevertheless my lens suffers from Backfocussing. Just have a look
at http://www.dhaeze.nl/oof/ and give me your remarks. I also put
sample of my 90mm Tamron macro.

Click to expand...

Obviously backfocusing. One comment - remember that the focus
sensors are black-and-white. Convert your shots of your focus
target to B&W and you will see a potential problem.

Lee Jay

Click to expand...

Peter Dhaeze said:

Problem? The target on the wall has to little contrast in BW?

Click to expand...

Right. But your Tamron worked just fine so I don't know if this is THE problem - just A problem.

Lee Jay

Learned something again. The next focustarget wil be real black and white. Thnx.

ljfinger said:

Peter Dhaeze said:

Problem? The target on the wall has to little contrast in BW?

Click to expand...

Right. But your Tamron worked just fine so I don't know if this is
THE problem - just A problem.

Lee Jay

Click to expand...

Quite a difference, huh?

Lee Jay