dazbo5
Posts: 2717
Joined: Tue Mar 29, 2005 8:05 am

Help Processing With A New Lens!

Sun Jul 16, 2006 6:48 pm

Morning!

I'm using a Canon 350D and up to 3 weeks ago, I was using a Canon 75-300 IS USM lens. I've since changed to a Sigma 50-500 EX APO DG which is much sharper, especially over 200mm. My problem is, my processing workflow for the 75-300, particularly with regards to sharpening, worked really well. However, since swapping lenses, I can't get to grips with sharpening. For some reason, the way I'm used to sharpening my images just doesn't seem to work with this lens and all I end up with is soft or over-sharpened, very jagged images. Its rather frustrating since the images are pretty sharp straight from the camera, but I just can't seem to process them, they look worse afterwards!

This is one example. I took this on a very sunny morning in Manchester yesterday. All I've done is centre and resize the image. No sharpening has been applied. I did try but you don't want to see the results!
Big version: Width: 1024 Height: 683 File size: 471kb


In my workflow, before resizing, I'd normally run one or two passes of USM at 50%, 0.2, 0, then resize and apply once more if requred. This worked really well with the 75-300, but its useless with the 50-500. I didn't think a change of lens would make much difference!

Any other technique is alien to me as this is what I've been used to doing for 2 years, and its always been fine. Any tips on how to sharpen up this one? I've searched the forum and read a few things, but didn't really understand what the process was.

Thanks in advance,

Darren
Equipment: 2x Canon EOS 50D; Sigma 10-20 EX DC HSM, 50-500 EX APO DG, Canon 24-105 f/4 L, Speedlite 430EX
 
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jumbojim747
Posts: 2426
Joined: Sat Oct 16, 2004 8:05 pm

RE: Help Processing With A New Lens!

Sun Jul 16, 2006 6:54 pm

Quoting Dazbo5 (Thread starter):
normally run one or two passes of USM at 50%, 0.2, 0, then resize

I would try to sharpen after re size NOT before.
That could be your problem.
Cheers
On a wing and a prayer
 
dazbo5
Posts: 2717
Joined: Tue Mar 29, 2005 8:05 am

RE: Help Processing With A New Lens!

Mon Jul 17, 2006 2:23 am

Quoting JumboJim747 (Reply 1):
I would try to sharpen after re size NOT before

Thanks for that. I've tried that and this is the end result. The original image, straight from the camera is quite sharp, just needs a little bit of sharpening. This is the result of a touch of sharpening, applied after resizing.

Big version: Width: 1024 Height: 683 File size: 551kb


I can see jaggies all over the place and it just looks over-sharpened to me even though only a tiny amount has been applied. For some reason, I just can't get to grips with sharpening with the new lens when my workflow was fine before (1058 images on here says so as well!).The new lens is great, produces some nice images but downsizing them just seems to create loads of jaggies. Quite frustrating!

Thanks again,

Darren
Equipment: 2x Canon EOS 50D; Sigma 10-20 EX DC HSM, 50-500 EX APO DG, Canon 24-105 f/4 L, Speedlite 430EX
 
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jumbojim747
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Joined: Sat Oct 16, 2004 8:05 pm

RE: Help Processing With A New Lens!

Mon Jul 17, 2006 2:33 am

Darren what sharpening are you using USM ?
If so are you using layers then it would be easy to erase the jaggies that appear after you apply USM.
Also what are your settings for the USM ?
Cheers
On a wing and a prayer
 
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JeffM
Posts: 7569
Joined: Sat May 07, 2005 3:32 am

RE: Help Processing With A New Lens!

Mon Jul 17, 2006 2:59 am

Quoting JumboJim747 (Reply 3):
If so are you using layers then it would be easy to erase the jaggies that appear after you apply USM.

Or you could do it the smart way and sharpen only what you want the first time using a layer mask.

I've never understood why you would sharpen everything, then hopefully erase what you don't need. Extra steps, extra chance to screw something up.

Erasing from a layer is non-recoverable. Using a layer mask is, and much more adjustable on the fly.
 
dazbo5
Posts: 2717
Joined: Tue Mar 29, 2005 8:05 am

RE: Help Processing With A New Lens!

Mon Jul 17, 2006 5:37 pm

Thanks guys. The settings are 50%, 0.2, 0. These have always done the trick for me but not with this lens! I'd normally select everything other than the sky to sharpen, then selectively sharpen anything which needs an extra kick. On some shots, even after resizing I'm getting jaggies! I've never used layers to sharpen, I guess I'd better start trying!

Another example, this has just been rejected for 'soft' and 'oversharpened'. I just can't seem to get to grips with this lens at all now and everything is getting rejected (begining to wish I hadn't bothered upgrading my lens!).

http://www.airliners.net/addphotos/r...717_Astraeus-B737-33A-G-STRJ-3.JPG

Thanks again,

Darren

[Edited 2006-07-17 10:48:14]
Equipment: 2x Canon EOS 50D; Sigma 10-20 EX DC HSM, 50-500 EX APO DG, Canon 24-105 f/4 L, Speedlite 430EX
 
LGW
Posts: 4281
Joined: Thu Jun 01, 2000 6:07 pm

RE: Help Processing With A New Lens!

Tue Jul 18, 2006 9:01 pm

Darren,

Looks like you're getting to grips with the editing judging by your recent uploads?

Ben
 
Granite
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RE: Help Processing With A New Lens!

Tue Jul 18, 2006 9:20 pm

Darren

One pass of between 400-500%, 0.2, 0 and then selectively sharpen after that. Any in-camera sharpening should be turned off or set to 0.

Regards

Gary
 
linco22
Posts: 1279
Joined: Tue Jun 14, 2005 6:16 am

RE: Help Processing With A New Lens!

Tue Jul 18, 2006 10:11 pm

Agree with all of the above. Darren, lovely light you got. Still quite soft to me.

Jeff, layer mask would be wonerful and I would use it believe me, but I only have Elements. But you are right, I'm always nervous about sharpening especially on more detailed shot. Chances of screwing up increase.

Regards
Colin  Smile
 
LGW
Posts: 4281
Joined: Thu Jun 01, 2000 6:07 pm

RE: Help Processing With A New Lens!

Tue Jul 18, 2006 10:26 pm

Darren,

I got problems when I went from D30 to 30D, the images just didnt respond to the same treatment so I had to have a play and it took a while but I think I am getting used to my new way of working; best to try everything, find whats best for you, and remember no setting is best for all images.

Ben
 
viv
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Joined: Tue May 31, 2005 5:17 pm

RE: Help Processing With A New Lens!

Tue Jul 18, 2006 10:35 pm

Quoting LGW (Reply 9):
no setting is best for all images

 checkmark   checkmark   checkmark 

Absolutely right! But try to convince the "Shoot at aperture-priority f/8 at all times" brigade.

Lots of those strange people upload here ...
Nikon D700, Nikkor 80-400, Fuji X Pro 1, Fujinon 35 f/1.4, Fujinon 18 f/2
 
dazbo5
Posts: 2717
Joined: Tue Mar 29, 2005 8:05 am

RE: Help Processing With A New Lens!

Wed Jul 19, 2006 12:39 am

Quoting LGW (Reply 6):
Looks like you're getting to grips with the editing judging by your recent uploads?

I wouldn't say that Ben, 2 out of 3 were rejected with the common theme of soft or oversharpened! And some of those were taken with the old lens. I just can't seem to get the balance right at the moment between not applying enough USM and too much. That's what I can't understand at the moment. The ones that I got accepted turned out fine (obviously!), but the ones that were rejected, having looked at them closely again, I understand the rejections, were taken in the same light and treated in the same way and processed like I normally do. For some reason, even though the original image is fine, I just can't seem to get the end product. Frustrating but I'll get their!

Quoting Granite (Reply 7):
One pass of between 400-500%, 0.2, 0 and then selectively sharpen after that. Any in-camera sharpening should be turned off or set to 0

Thanks Gary, I'll give those settings a go because the setting I've been using simply aren't working at all with this lens. All in-camera sharpening is set to 0, has been since I got the 350D over 12 months ago. The only thing that I've changed is the lens. Its amazing that a simple change to higher quality glass has caused these issues.

Thanks again for all your replies and tips. I'll give them a go and see what damage I can do to them!

Darren
Equipment: 2x Canon EOS 50D; Sigma 10-20 EX DC HSM, 50-500 EX APO DG, Canon 24-105 f/4 L, Speedlite 430EX

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