Questions tagged [fisheye]
A fisheye lens is an ultrawide-angle lens that produces strong visual distortion intended to create a wide panoramic or hemispherical image. Much like that of looking through a fish bowl.
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What is the use of focal length in a Fisheye lens?
This is similar to:
What does the focal length of a fisheye lens mean?
What is the relationship between field of view and focal length for fisheye?
But actually, I have a different question. I have ...
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Imagemagick distort values for GoPro Hero3+ Black lens correction
I am trying to use ImageMagick to correct an image from the lens of a GoPro Hero3+ Black camera. I see here that ImageMagick has both instructions and code parameters here for a GoPro Hero 3 but ...
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What might cause the center of my image to be less sharp than the edges?
I'm using a Sony A7R IV camera with a 12mm f/2.8 ED AS NCS Fisheye Lens. From the rescharts and MTF information that I've seen of this lens, the center sharpness is much better than near the edges. ...
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What does the focal length of a fisheye lens mean?
Say an ordinary lens, Sigma 30mm f1.4 for example, is designed for APS-C and thus produces images that have a 35mm-equivalence of 48mm.
But what about the fisheye ...
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Are there any off-the-shelf USB camera modules that can capture a very wide angle from up close?
I'm only just learning tonight how to interpret camera specs, and I'm feeling a little frustrated. I have a project in mind that will require me to film a 6x6" (15 x 15 cm) view up-close at +/- ...
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How to calibrate a specific 360 camera for FFMpeg to properly reproject to equirectangular?
I have a generic 360 Camera, and when I convert its fisheye 235° output into equirectangular using FFMpeg, I don't get good results, the image appears squeezed at the bottom.
How could I determine the ...
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Which parameters to use with FFMPEG to rectify Mars Ingenuity helicopter images?
I know how to convert a fisheye image to equirectangular, to view it inside a 3D VR viewer as a "panorama":
...
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Image Stitching with large Parallax
I need to stitch images of 5 cameras together. The cameras are mounted on the sides of an underwater remote operated vehicle. It's basicly a cupoid with sizes of 2.1m x 1.3m x 1.85m. The cameras are ...
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Fisheye image circle close to border of image
I'm using a Canon 8-15mm fisheye with a sony alpha 7R3 and a sigma adapter.
I just noticed that at 8mm the circle of the image is not exactly centered; it is close to the top border of the image.
...
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How to get close to 180 degrees with minimal fisheye look on iPhone X or 11?
I'm trying to film my rugby practices with my iPhone and wondering what is the best lens to use to capture the entire field without much that fish eye look?
I noticed that the new iPhone 11 (Pro) ...
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Are there lenses which can give 180° fisheye circle with a cropped-frame camera?
I have a Canon EOS 1100D, and I'd like to take photos of the whole sky dome. Currently I'm using the Belomo MC 3,5/8A lens. It has 180° angle of view, but that's only true for full-frame cameras, and ...
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What to look for in a fisheye that is to be useful at multiple sensor formats?
I am aware there are multiple projection types, and a complicated relationship between imaging circle, focal length and how a crop will look like.
How to choose a fisheye that is useful on a full ...
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Filter holder adaptor with Canon's EF 8-15mm f/4L Fisheye USM lens
I'm interested about using ND filters with the Canon 8-15mm fisheye, but I'm not finding information about which alternatives are available. Are Format or Lee sw150 compatible with such lens?
If ...
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How do you determine focal length/wideness of fisheye conversion lenses?
I currently use a 0.7x adapter on a 28mm lens, but I want to go wider. I've seen a selection of different 0.*x lenses but with no indication to the focal length it provides. How do you determine the ...
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Are "moustache" distortions in rectilinear ultrawides the result of a fisheye+pincushion construction?
If I wanted to try and build an ultrawide, I guess I would try building a fisheye first, then try tearing the frame back into shape with a group that introduces pincushion distortion.
The kind of "...
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Does the DJI Phantom 4 advanced has the fisheye effect on taking videos from above?
I make research on transportation systems. I'm going to use a Dji Phantom 4 Advanced in order to take videos from above and then I will georeference multiple frames. Should I take into account the ''...
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Pixel diameter of a given field of view calculation equisolid (equal-area) fisheye lens
I have a 180° equisolid (equal-area) fisheye lens with a focal length of 8 mm. I want to crop images to a circle defined by an angular field of view from the zenith angle of the lens (i.e. the middle ...
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Diagonal Angle of View given Horizontal or Vertical angles of view for equidistant lenses
I am struggling to find the correct mathematical relation between the horizontal and diagonal angle of view for a given aspect ratio for equidistant lenses.
For rectilinear lenses, it is possible to ...
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Use a fisheye lens on APS-C camera as ultra wide angle
Is it a good idea to use a full frame fisheye lens, like a Canon EF L 8-15 f/4 USM Fisheye (or any other similar) as ultra wide angle lens on an APS-C camera? In my understanding, the APS-C will just ...
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How does one evaluate the sharpness of a fisheye lens throughout its field of view?
While I have been analyzing sharpness and other optical properties of rectilinear lenses for a while, I have received a fisheye lens covering 180° and am having trouble producing an adequate test. ...
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If I adapt an EF circular fisheye lens to EF-M mount, will the image be cropped?
I cannot find a circular fisheye lens with an Canon EF-M mount. Is there one? There are a couple of regular fisheye lenses, but no circular fisheye with equisolid angle projection. If I use an EF-M/EF ...
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How is Focal Length defined for 180-degree fisheye lenses?
The definitions of Focal Length I saw seem to implicitly assume that the field of view is finite, which isn't true for 180-degree lenses, or presume parallel transport of certain rays passing through ...
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How to measure field-of-view of a camera with fisheye Lens? [duplicate]
For a camera with a rectilinear lens a simple measurement would
consist of taking images from known distance of an object of known size.
For example using a sheet of paper as an object set on a wall ...
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How do i set my Nikon D700 to bracketing starting at -1?
Totally new to Photography,
I am trying to take hemispherical photographs using a D700 And A Fisheye-Nikkor 8mm f/2.8 lens for my research. And i am required to set my camera as follow [Exposure - ...
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What kind of lens do I need to buy to create a fish eye effect?
I would like to buy a lens that creates a fish eye effect. However, when I look it up, it comes up with all different prices and all different names. I have a proper Canon camera and I was wondering ...
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How to determine the projection (Stereographic, equidistant etc.) of my fisheye lens?
I have a Fujinon FE185C057HA fisheye lens and I want to know its projection.
Is there a software tool I can use to do this? I have the lens with me so I can take ...
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How photo and lens looks with 1mm focal length?
Are there lens with 1mm focal length?
What is the shortest focal length possible for full frame sensor? And can it be rectilinear lens?
There is ...
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Why does a fisheye add-on lens for smartphones need refocusing when a wide-angle adapter doesn't?
I'm playing with some low-cost clip-on fisheye lens for phones:
When I clip the fisheye over the phone, the camera needs refocusing. But the 0.67x wide-angle + macro combo doesn't. What's the theory ...
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It is a way to remove fish eye from a gopro or yi 4k action camera without loosing quality or without replace the lenses?
It is a way to remove fisheye from a gopro or yi 4k action camera without loosing quality or without replace the lenses ? (regarding the video)
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With a Full-Frame Camera, will a Full-Frame Fisheye Lens produce a Circular Image?
I am looking to buy my first full-frame camera, but I want some clarity on this one point.
I have the Canon 8-15 mm full-frame fisheye lens, it works great on my non-full-frame Canon DSLR. In the ...
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Abstract street photography with a fisheye lens? Examples?
I do street photography, but I don't shoot people or scenes. Instead, I tend to go for details. Lines, shapes, words. I've often wondered if a fisheye lens would be useful for someone like me, or ...
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Software to re-center a fisheye image
I am looking for easy to use software that works on OS X and can "re-center" an equal-area projection fisheye image.
What do I mean by "re-center"? The perspective correction tools built into many ...
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All-sky imaging camera recommendations
I am looking for a camera (with a fisheye lens) to capture low temporal resolution (0.1 Hz), reasonably high pixel resolution (1 mega pixel) video. It will be installed in a weather proofed housing ...
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What is the relationship between field of view and focal length for fisheye?
What is the relationship between the focal length and field of view for an equal-area ("equisolid") projection fisheye lens? Alternatively, what is the relationship between the 180-degree image ...
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How to remove fisheye in PhotoScan Pro?
I am trying to build a 3D model of a site in CA using Photoscan Pro. The images were taken by 3DR solo drone GoPro camera. I need to process the image in Photoscan, however, I am having trouble with ...
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Do the DJI Phantom 3 & 4 produce the same amount of fish-eye as previous Phantoms?
I'm wondering if the generation 3 and 4 of the DJI Phantom are still producing the same fish-eye effect on photography as the Phantom vision 2.
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How to use a fisheye lens on a Canon T3i compared with a T2i?
The question may seem simple, so let me explain it more:
I had a Canon T2i, which I used for a time with my fish eye lens. When zoomed all the way out on the fisheye lens there used to be visible in ...
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Can I use a plano convex cylindrical lens, instead of a fisheye, to shoot 360°x180° panos with my phone?
Is it possible to use a plano convex cylindrical lens (like this) instead of a fisheye lens to make a panorama photo? The idea is that the lens would give you 180° vertical and by turning the camera ...
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What kind of product do I need to use a fisheye lens with a Canon T3?
I've got a Canon T3 camera, which I normally use with my 18-55mm lens.
However during a trip I bought a fisheye lens by Digital Advance, very like this pic:
I'd like to use this one on my Canon T3. ...
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Fish-eye effect utility [duplicate]
In which situations should I use fish-eye effect? I own a Canon Power sx510hs which is an advanced point and shoot camera. It has fish eye effect which distorts an image spherically. Other than having ...
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Wide angle or ultra-wide (fisheye) lens for interior and exterior architecture shots?
I'm thinking to add a wide angle lens to my gear and I need your advice.
I own a Nikon D5300, and my options are the:
10.5mm f/2.6 Nikkor fish eye or the 10-22mm f/4 Sigma wide angle zoom.
I think ...
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Is the effect of a fisheye lens visible in an optical viewfinder or Live View?
I live in an area without a camera shop nearby, so I can't see for myself.
On a DSLR, is the effect of a fisheye lens visible in the optical viewfinder or do I need a fisheye viewfinder for that? Is ...
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Why does the "fisheye effect" look stronger or weaker with different scenes taken with the same lens?
It seems that the fisheye effect can look different with the same lens.
So I want to understand how it works.
For example, I use a Dji Phantom vision 2 drone to take pictures, all of my pictures have ...
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How can I simply remove the fish-eye effect of my DJI Phantom vision 2 lens? [duplicate]
I'm searching a simple and cost-less way to remove the fisheye effect by:
adding a material (additional corrective lens)
or
find the right software (free if possible) to remove the fisheye effect on ...
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Bubble Effect on image (Photoshop or online)
I have a square image (300 x 300), and I'd like to apply the "bubble effect" as shown here:
Specifically:
I only want the "bubble" part in this example
Make image round and give it that curved ...
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What is the correct, standard EXIF metadata to add for Rokinon 8mm fisheye lenses?
I own a Rokinon 8mm Ultra Wide Angle f/3.5 Fisheye Lens for Canon EF Mount. This is a manual lens not electrically connect to the Canon 60D body I use it with.
With ...
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Which lens/focal length offers the widest viewing angle without too noticable distortion/fish-eye-effect?
I am looking for a lens for my Sony Alpha 77 (APS-C), which gets me an as wide as possible viewing angle, but I also hate that fisheye effect one gets from using too low of a focal length. About where ...
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Why doesn't the GoPro automatically correct for the fisheye distortion?
Automatic correction of various lens distortions is possible through specialized software that takes a few camera parameters and produces an output image free of distortion.
Why don't most cameras do ...
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Correct a fisheyed picture using Hugin
I've got a Olympus Body Cap 9mm fisheye lens for my Panasonic DMC-GM1 camera. I was told to use Hugin to correct the fisheyed pictures taken with that lens.
When I import my pictures into Hugin, it ...
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Why do circular fish eye lenses create circular images?
I'm trying to understand the physics of circular fish eye lenses. As far as I can see circular fish eye lenses create an circular image because the area of the sensor is larger than the projected ...
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