Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 09 Nov 2007 (Friday) 07:12
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

Lens aberration correction in DPP3.2

 
mirkoc
Member
136 posts
Joined Apr 2007
Location: Zagreb, Croatia
     
Nov 09, 2007 07:12 |  #1

There is a new function of lens aberration correction in DPP3.2 but it doesn't work. My camera is 400d, in case it is relevant for the matter.

Does it work for you, guys?

Mirko




  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)
snowyowl13
Goldmember
Avatar
2,798 posts
Gallery: 4 photos
Likes: 11
Joined Feb 2007
Location: Prince Edward Island, Canada
     
Nov 09, 2007 08:14 |  #2

I'm using a 20d but the LR is grayed out in DPP.




  
  LOG IN TO REPLY
Lowner
"I'm the original idiot"
Avatar
12,924 posts
Likes: 14
Joined Jul 2007
Location: Salisbury, UK.
     
Nov 09, 2007 10:27 as a reply to  @ snowyowl13's post |  #3

I've only just started playing with it myself, so I'm hardly what you'd call an expert, but with the RAW files coming out of my 30D it does seem to do something. But what is extremely difficult to see.

It refuses to even consider files from my Sigma 170-500, which is understandable. It is perfectly happy with my 24-70L f/2.8 or its mate the 70-200L f/2.8.

Its much easier to see the lens distortion effects because the image jumps between its before and after states.

I desperately need a proper written manual to get to grips with its possibilities.

Richard


Richard

http://rcb4344.zenfoli​o.com (external link)

  
  LOG IN TO REPLY
mirkoc
THREAD ­ STARTER
Member
136 posts
Joined Apr 2007
Location: Zagreb, Croatia
     
Nov 09, 2007 11:26 |  #4

snowyowl13 wrote in post #4283046 (external link)
I'm using a 20d but the LR is grayed out in DPP.

Same with me.




  
  LOG IN TO REPLY
Longwatcher
obsolete as of this post
Avatar
3,908 posts
Likes: 3
Joined Sep 2002
Location: Newport News, VA, USA
     
Nov 09, 2007 16:22 as a reply to  @ mirkoc's post |  #5

The lens correction functions of DPP 3.2 only work with selected lenses as I discovered.
It does NOT work with my 70-300 DO, but it DOES work with my 28-70/f2.8L and my 85/f1.2L and my 16-35. I note most of the non-L zoom lenses are not on the list and only Canon lenses are on it, so no Sigma or Tamron correction. I do note that a lot of the wide angle primes ARE on the list.

It grays out when the lens is not on the list. And the list can be found in the help section.

So far I have not seen any need for it as I am at pretty normal focal lengths for most of what I have been doing lately. Also I tend to use PS CS3 and ACR more these days, but it looked like a handy feature to have when CS3 won't cover a camera, like I suspect will be the case for the 1DsMkIII for about 3 months.


"Save the model, Save the camera, The Photographer can be repaired"
www.longwatcher.com (external link)
1DsMkIII as primary camera with f2.8L zooms and the 85L
http://www.longwatcher​.com/photoequipment.ht​m (external link)

  
  LOG IN TO REPLY
tzalman
Fatal attraction.
Avatar
13,483 posts
Likes: 201
Joined Apr 2005
Location: Gesher Haziv, Israel
     
Nov 10, 2007 02:51 |  #6

The strange thing is that it does work with my Sigma 15-30, which is good because it's the one that needs it the most. I hope Canon isn't reading this.


Elie / אלי

  
  LOG IN TO REPLY
snowyowl13
Goldmember
Avatar
2,798 posts
Gallery: 4 photos
Likes: 11
Joined Feb 2007
Location: Prince Edward Island, Canada
     
Nov 10, 2007 07:32 |  #7

mirkoc wrote in post #4284139 (external link)
Same with me.

Me too. I'm thinking of printing out the down-loadable manual, all 160 pages of it.




  
  LOG IN TO REPLY
islandboy
Member
32 posts
Joined Aug 2007
Location: Somewhere in the sun
     
Nov 12, 2007 11:42 |  #8

It isn't greyed out for me and I have tried it with my Tamron 17-50 but can't see it doing much. It seems to correct a little bit of barrel distortion but doesn't correct any of my vertical perspective distortion at all which was the main reason I downloaded the update.


Canon EOS 40D, Tamron 17-50/2.8, Canon 70-300/4-5.6 IS, Speedlite 430EX II, G5, G11 with underwater housing, Powershot A95 with underwater housing, SD850is, Vixia HF S100

  
  LOG IN TO REPLY
Lowner
"I'm the original idiot"
Avatar
12,924 posts
Likes: 14
Joined Jul 2007
Location: Salisbury, UK.
     
Nov 12, 2007 13:55 as a reply to  @ islandboy's post |  #9

Theres a downloadable manual? Hooray!:D

I was in the middle of laboriously copying the help files into Word and am getting repetitive phrase syndrome.

"You can..............." and "Adjust an image while viewing it" seem to repeated millions of times.

It would also be nice if the manual had a few screenshots to explain things. Because there are a few things I have read and reread but still cannot understand.

Try this one. Its in the explanation of White Balance and I paraphrase here: "When white balancing, even if a grey point has been selected, the image will still white balance".

Now would someone try to explain that?. Basically even if I screw up and select a grey 5 x 5 pixel area, the software magically knows where I've gone wrong and gently corrects my mistake? I don't think thats very likely.

Richard


Richard

http://rcb4344.zenfoli​o.com (external link)

  
  LOG IN TO REPLY
Longwatcher
obsolete as of this post
Avatar
3,908 posts
Likes: 3
Joined Sep 2002
Location: Newport News, VA, USA
     
Nov 12, 2007 15:50 as a reply to  @ Lowner's post |  #10

I am curious if the reason it works with some Sigma and Tamron lenses is they are emulating Canon lens codes and the software things they are an appropriate Canon lens.

But hey if it works, great.


"Save the model, Save the camera, The Photographer can be repaired"
www.longwatcher.com (external link)
1DsMkIII as primary camera with f2.8L zooms and the 85L
http://www.longwatcher​.com/photoequipment.ht​m (external link)

  
  LOG IN TO REPLY
tzalman
Fatal attraction.
Avatar
13,483 posts
Likes: 201
Joined Apr 2005
Location: Gesher Haziv, Israel
     
Nov 13, 2007 04:06 |  #11

Lowner wrote in post #4302493 (external link)
Try this one. Its in the explanation of White Balance and I paraphrase here: "When white balancing, even if a grey point has been selected, the image will still white balance".

Now would someone try to explain that?. Basically even if I screw up and select a grey 5 x 5 pixel area, the software magically knows where I've gone wrong and gently corrects my mistake? I don't think thats very likely.

Richard

Pocket explanation of white balance: If you select a spot that should be white but its RGB values are 253/245/240 (red cast), the application will reduce the red channel and strengthen the blue channel throughout the entire image in order to make them equal to the green at the selected spot and it becomes 2454/245/245, true white. However, black, all shades of neutral grey and white are all the same color whose three values are equal to each other. So if you select a grey, say, 136/128/123 and balance it to 128/128/128, the effect on the image would be exactly the same. In fact, using a grey point is a bit safer - I'll explain. Suppose the white spot you choose should really be 260/252/247 because of that red cast, but since 255 is the maximum it is clipped and written as 255/252/247. The application cannot know by how much the red channel is clipped and therefore the adjustment it calculates will be incorrect. By using a grey area this difficulty is avoided. Still, white is usually easier to find in an image than true grey. Just be sure it isn't clipped.


Elie / אלי

  
  LOG IN TO REPLY
Tee ­ Why
"Monkey's uncle"
Avatar
10,596 posts
Likes: 4
Joined Feb 2006
Location: Pasadena, CA
     
Nov 13, 2007 12:47 |  #12

Here is a list of bodies and lenses that are compatible with the feature.
I would think Canon mapped out the distortion and what not for each lens, so that the program knows how much distortion is to be expected with a body at a given focal length, so I'm not sure if the feature will be of value even if Sigma/Tamron lenses are falsely recognized, as I'd doubt their amount of distortion has been mapped out.

From Bob Atkins site.
* Compatible Cameras
EOS-1Ds Mark III, EOS-1D Mark III, EOS-1D Mark II N, EOS-1Ds Mark II, EOS-1D Mark II, EOS-1Ds, EOS-1D, EOS 5D, EOS 40D, EOS 30D, EOS DIGITAL REBEL XTi/400D DIGITAL

* Compatible Lenses
EF 14mm f/2.8L USM
EF 24-105mm f/4L IS USM
EF 14mm f/2.8L II USM*1*3
EF 28-70mm f/2.8L USM
EF 20mm f/2.8 USM
EF 28-135mm f/3.5-5.6 IS USM
EF 24mm f/1.4L USM
EF 28-200mm f/3.5-5.6
EF 28mm f/1.8 USM
EF 28-200mm f/3.5-5.6 USM
EF 35mm f/1.4L USM
EF 28-300mm f/3.5-5.6L IS USM
EF 50mm f/1.2L USM*1*4
EF 100-400mm f/4.5-5.6L IS USM
EF 50mm f/1.4 USM
EF-S 60mm f/2.8 Macro USM
EF 85mm f/1.2L USM
EF-S 10-22mm f/3.5-4.5 USM
EF 85mm f/1.2L II USM*2*4
EF-S 17-55mm f/2.8 IS USM
EF 100mm f/2.8 Macro USM
EF-S 18-55mm f/3.5-5.6
EF 16-35mm f/2.8L USM
EF-S 18-55mm f/3.5-5.6 II
EF 16-35mm f/2.8L II USM*1*3
EF-S 18-55mm f/3.5-5.6 USM
EF 17-35mm f/2.8L USM
EF-S 18-55mm f/3.5-5.6 II USM
EF 17-40mm f/4L USM
EF-S 18-55mm f/3.5-5.6 IS*3
EF 24-70mm f/2.8L USM
EF-S 55-250mm f/4-5.6 IS*3

Here is a link to the page.
http://bobatkins.com …digital/canon_d​pp_32.html (external link)


Gallery: http://tomyi.smugmug.c​om/ (external link)

  
  LOG IN TO REPLY
Lowner
"I'm the original idiot"
Avatar
12,924 posts
Likes: 14
Joined Jul 2007
Location: Salisbury, UK.
     
Nov 13, 2007 14:38 as a reply to  @ Tee Why's post |  #13

Elie,

Thanks for the decoding of Canons nonsense. I will admit that I've never worried about the technicalities of white balance. So taken to extremes, if I eyedropper a pure black with the white point or vice versa in Photoshop it will all still work out? Just as long as there's no colour cast?

Richard


Richard

http://rcb4344.zenfoli​o.com (external link)

  
  LOG IN TO REPLY
jupera
Junior Member
20 posts
Joined Sep 2006
Location: Espoo, Finland
     
Nov 13, 2007 16:48 |  #14

I have tried DPP's lens distortion correction with 400D and with the the following lenses

- Canon EF 28-135 IS USM
- Tamron 17-50/2.8 SP DI II
- Tamron 90/2.8 DP Macro

and it wokrs well see a sample (http://rantsu.1g.fi/ku​vat/Misc/Test+images/ (external link)) ... it is just a test and not fine tuned ... the same picture with the barrel distortion correction made by PSP11 is here http://rantsu.1g.fi …-rot5_cpp-ba-s_280707.jpg (external link)

DPP does not recognize Sigma 100-300/4 APO EX HSM


http://rantsu.1g.fi/ku​vat/ (external link)

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

3,135 views & 0 likes for this thread
Lens aberration correction in DPP3.2
FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is Brendavinci
1198 guests, 314 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.