Been sugested my 300f4 is soft

OK. I have done this test. - All images shot this morning - on a tripod - No processing at all done so far - just converted to 800pixel jpeg straaight from DPP.
The + & - figures are relevant to lens adjustments using the canon settings. I've picked three from each set. Many thanks for any help.

1
+2_f4_5_at_250.jpg

2
-2_f4_5_at_250.jpg

3
f4_5_at_250.jpg


4
+2_f6_3_at_125.jpg

5
-2_f6_3_at_125.jpg

6
f6_3_at_125.jpg


7
+2_f9_at_80.jpg

8
-2_f9_at_80.jpg

9
f9_at_80.jpg
 
rather than convert to 800pixels, you should crop to 800 pixels. youve lost a lot of detail per shot and probably hidden anything unsharp unless it is particularily bad
 
Moving to equipment. In depth critique is for comments on a picture not a lens!
 
fletch5 said:
rather than convert to 800pixels, you should crop to 800 pixels. youve lost a lot of detail per shot and probably hidden anything unsharp unless it is particularily bad
Click to expand...
:agree:

tell us on which part of the lens AF is set to and make a 100% crop of this part.
 
All at ISO 400 - spot metering - F7.1

1 = standard
6286-lens_test0025.jpg

2 = set lens at +2
lens_test0026.jpg

3 = set lens at -2
lens_test0027.jpg
 
id go with no 2 out of the set, i would try the settings at smaller intervals though, form 0 to +2.

to be fair though, unsharpened raw, that looks ok to me. have you sharpened it?
 
Sorry, yes, the last three images are sharpened to no 10 (max) using DPP.
 
#1 for me
How does it look on +1 ?
My 50 F1.4 wasnt too sharp when I got it, but by using microadjust I made it nice and sharp :)

Oh and dont use sharpen tool, and can we see crops shot at F4 ?
 
All with NO sharpening.....

F4 Standard
lens_test0029.jpg

F4 +2
lens_test0030.jpg

F4 -2
lens_test0030.jpg
 
Did you switch the IS off before taking?

I used to get very soft images if I shot with my 24-105 IS with the IS on mounted on a tripod.
 
Oh, no, my IS was on during these shots, set to position 1.
 
at F4 #2 for me...
There are two sliders for sharpening in DPP if i remember right...one that goes to 10 and other to 255 or something like this...i find the first one useless but second works just fine...
 
Only 1 slider in the RAW section
There is a JPEG slider too, but I was advised not to use both and you are going into the relms of over sharpening..

If No.2 is the best - I should try shooting with micro adjustment of +2 for this lens......
 
SEPkent said:
Only 1 slider in the RAW section
There is a JPEG slider too, but I was advised not to use both and you are going into the relms of over sharpening..

If No.2 is the best - I should try shooting with micro adjustment of +2 for this lens......
Click to expand...

Im not used to DPP soI dont remember all those settings, will have a look once I get home.

To be honest, I would expect a prime L lens to be sharp at its max F...
mine 200 is sharp, and has no need to microadjust:)

do a test shot without IS as well
 
sep, have you got anything not rounded for the test as well, just a thought. like a memory card or such like. on tripod, no IS 100% crop. also set micro adjustment to 0 +1 and +2
 
As suggested. Thanks to everyone so far.....

1 = Standard
lens_test0032.jpg

2 = +1
lens_test0033.jpg

3 = +2
lens_test0034.jpg

4 = +3
lens_test0035.jpg
 
The Micro adjustments can be made just for individual lenses
They are in the camera under the C.FnIII - Autofocus/Drive settings.....
 
+2 is the better but there still not as good as they should be with your prime lens.
 
+2 for me as well i think. not that much in it though in truth...
 
I just adjusted my 70-200L to -30, 0 and +30 and can't see any difference... :(
 
Compared to what I'm used to with my own Nikon 300mm f/4 everything looks really really soft.

I think AF fine tune is helping a bit, but not really papering over the cracks.

TBH the lens looks pretty horrid to my eyes...
 
Just been ouside for the last hour - to see if I could photograph a bird with the adjustment on the lens of +2. Not a single bird turned up... But this little fella did.... What do you think? It's got Raw sharpening of 8, and that's it.
img_1163.jpg

img_1159.jpg
 
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