a lens defect which causes straight lines to be curved or bowed
15
votes
3answers
975 views
Do the Lightroom lens correction tools make good lenses less important?
Lightroom has Lens Correction tools such as Distortion, Vignetting, Chromatic Abberation, etc. depending on the brand and model of lens.
Due to this feature, it is less relevant what the distortion ...
10
votes
4answers
1k views
How wide can a lens be before it begins to produce distortion?
Some lenses will produce distortion near a photo's edges (lines that should be straight begin to curve). Fisheye lenses definitely do this, and some ultra-wide lenses will do this too. I like wide ...
10
votes
1answer
1k views
What are Barrel and Pincushion distortion and how are they corrected?
I have some questions regarding Barrel distortion and pincushion distortion. Since they are related I have put them in single post.
I am aware that barrel distortion
occurs more in wide-angle
...
8
votes
3answers
617 views
What's the term for wide angle lenses with no distortion?
Is there one word to describe the difference between wide angle lenses that have a circular distortion and wide angle lenses that produce images where perspective lines remain straight?
8
votes
1answer
698 views
How do straight edges end up curved in photos?
In the standard model for a lens straight lines in the subject of a photograph will always end up straight. However I have seen a variety of photographs in which straight lines end up being curved, ...
7
votes
7answers
2k views
Software to auto correct lens distortion based on photo
A photo contains digital information about the make of the camera the focal length,etc. Does any software use this information and auto correct the lens distortion in the photo. I know that Photoshop ...
7
votes
6answers
217 views
Is it technically possible to build a camera body to correct for lens defects?
Most lenses tend to be expensive because the lens needs to be very complicated in order to correct for various optical effects (aberration, etc). Is it possible to build a sensor and processor ...
7
votes
1answer
275 views
What causes this bluish tint and other anomalies in this image?
I bought a Tamron CF Macro 28-70mm 3.5-4.5 lens on eBay for $35 AUD plus postage - cheap enough to give it a go and see what it's like.
I took a range of photos with my Sony NEX-C3 to get a feel for ...
7
votes
3answers
645 views
Is pincushion or barrel distortion really all that bad in a lens?
Given that software can pretty trivially fix pincushion and barrel distortion patterns if you're shooting in RAW (Lightroom did the right thing just by knowing what lens I used with the given EXIF ...
6
votes
1answer
249 views
What does “distortion <XX%” mean in lens specs?
I'm going to buy a lens and I would like to understand what "distortion <XX%" means.
It's a vari-focal 10-60mm lens, and mentions distortion <12-1%. According to my understanding, at 10mm focal ...
6
votes
4answers
135 views
How can I check for damage to my lens from impact with a window?
I was taking a photo at an airport when I accidentally zoomed my Canon SX40HS into a window. The impact wasn't super hard, but there was a thump. I cannot see any visible damage, but how can I check ...
5
votes
1answer
316 views
How difficult is it to correct mustache-style distortion?
I am considering the Samyang 14mm Ultra Wide-Angle f/2.8 IF ED UMC but I am somewhat concerned about the 5.3% of mustache-style distortion this lens produces.
I like most of what I read about this ...
4
votes
3answers
343 views
What lens for taking photos of artwork with Nikon D800 without distortion?
I'm an artist and I do need to take photos of my paintings with heavy texture. I bought a 50mm f1.8 with my new Nikon D800 and I find some distortion when the painting is big 36"x 60". I used to ...
4
votes
1answer
164 views
why close ups are too wide
I have been taking close up pictures for a while with no problem. I think I may have done something with the settings, because all of a sudden my closeups are distorted (wide). I have a sony cyber ...
4
votes
2answers
313 views
Which raw processors interpret distortion/CA correction from Micro Four Thirds cameras?
I've been thinking about Micro Four Thirds, which in many cases encodes distortion and chromatic aberration correction into the raw files. But, the raw processor I currently use (Bibble) ignores this ...
3
votes
6answers
2k views
Why do images get “corrupted”?
I have had my Nikon D40 for a while, and some of the pictures are coming out distorted.
Two examples are below:
So my questions are:
How do I fix them after the fact? - i.e. after they have been ...
3
votes
3answers
579 views
How to avoid unflattering facial distortion when using a slightly wide angle lens?
A 35mm prime on a full format body (or 24mm on cropped) is a great lens to walk around with. But when one gets too close to someone to take a picture, invariably some of their features are ...
3
votes
2answers
1k views
Are there any free or better alternatives to Fisheye-Hemi?
I've been tempted to get a fisheye lens (The Nikon 10.5 DX specifically), and have seen the Fisheye-Hemi plugin for "normalizing" fisheye images.
Does anyone have experience of using the plugin or ...
3
votes
2answers
188 views
Is lens focal length specified considering the effect of barrel distortion on field of view?
Given a NIKON 14mm f/2.8D ED AF Ultra Wide-Angle Nikkor Lens on a full-frame sensor, in theory the field of view is HFOV: 104° x VFOV: 81°. However this lens exhibits noticeable barrel distortion ...
2
votes
1answer
650 views
Auto cropping scanned document or photo
I usually take a picture of bill or receipt using my mobile phone and store it in a computer. Is there any desktop or Web-based software which can straighten the photo of a paper and flatten it? For ...
2
votes
1answer
697 views
Are Nikon Distortion Control Data firmware updates critical?
Nikon has released the Distortion control data upgrade for D90 and D5000 (I am an owner of Nikon D90).
The Distortion Control Data firmware upgrade is available for Nikon
D90 and D5000 cameras ...
1
vote
4answers
1k views
Seeking Mac Software Solution for Correcting Barrel Distortion
I have a Nikon D7000 and a 14-24 wide angle lens which I love, but it does result, often, in a great deal of barrel distortion.
I'm seeking a software solution; ideally an Aperture plug-in, to ...
1
vote
2answers
154 views
Are there medium priced cameras that can capture photos with very little distortion?
I just got the Sony DSC-WX9 and DSC-HX100V a couple months ago, and found that, if a person's face is right in the center of the photo (for a photo with 4, 5 people standing, from head to toe), then ...
1
vote
2answers
752 views
Nikon 50mm f/1.8 D has less distortion than Nikon 50mm f/1.8 G?
Some of the Amazon reviews say that Nikon 50mm f/1.8 D has less distortion than Nikon 50mm f/1.8 G?
The D is about $80 cheaper, is smaller, lighter, has less distortion, and has manual aperture ...
1
vote
3answers
549 views
Does sensor size affect lens distortion?
There was recently a video posted about how different focal lengths affect portrait photography, specifically how distortion at smaller focal lengths have more distortion and are less flattering.
So ...
1
vote
1answer
213 views
What is the best way to take pictures for Panography style post-processing
I have recently started to play with Panography, which is a style of stitching pictures together, however on my first couple of attempts, quite a few of the pictures that I took were distorted towards ...
1
vote
2answers
557 views
Can I configure the D7000 to perform lens distortion corrections on the embedded JPEG in the RAWs it saves?
Lightroom eats the distortion present in the D7000's kit lens for lunch. However, it's time consuming to check which photos I like by performing this correction on all the photos in lightroom first. ...
1
vote
1answer
231 views
Can the Sony A55 software-correct lens aberrations like the Panasonic GH2 does?
Panasonic GH2 automatically corrects lens geometric distortion and chromatic aberration. If I understand it right, it always applies this correction just after reading from the sensor — so the image ...
1
vote
0answers
168 views
Nikon D3100 transfer distorts photos [duplicate]
Possible Duplicate:
Why do my images get distorted on my Nikon DSLR?
I've been using this camera (Nikon D3100) for over a year and have absolutely no problems with it, until yesterday. When ...
0
votes
1answer
182 views
What is this warped effect and how to achieve it?
What is the name of the effect used in this photo and how do you apply it to a photo?
As you can see, the nearest servers (which look like cupboards) are somewhat distorted. That is the effect I ...
0
votes
1answer
794 views
Is there any way to do lens correction in Adobe Photoshop 7?
I am walking through a tutorial for Photoshop but at one point they choose "Lens Correction" in the Filter --> Distort menu. I am on Photoshop 7 so I don't have this.
Is there anyway to do lens ...
0
votes
0answers
87 views
How to transform image to be projected undistorted onto a sphere [duplicate]
I found this similar question: Is it possible to print a photo so it can be mounted on a globe?
I do not believe the similar question is a "duplicate" because it is for a similar but different ...
