Category: photography

https://jeffreyianwilson.medium.com/introduction-to-color-calibration-for-digital-photography-e9d9cef504ab

https://lightcraft.pro/

https://www.cined.com/iphone-15-pro-anamorphic-experiment-what-makes-a-cinema-camera-by-michael-cioni-strada/

For Michael Cioni, a cinema camera has to fulfill five requisites:

• Cinematic resolution
• Intraframe encoding
• High dynamic range
• Wide color gamut (10-bit or more)
• Removable lenses

For now, the iPhone 15 Pro meets four out of these five requirements, all except the last one.

https://blog.frame.io/2024/02/01/how-to-capture-and-view-vision-pro-spatial-video/

Apple’s Immersive Videos format is a special container for 3D or “spatial” video. You can capture spatial video to this format either by using the Vision Pro as a head-mounted camera, or with an iPhone 15 Pro or 15 Pro Max. The headset offers better capture because its cameras are more optimized for 3D, resulting in higher resolution and improved depth effects.

While the iPhone wasn’t designed specifically as a 3D camera, it can use its primary and ultrawide cameras in landscape orientation simultaneously, allowing it to capture spatial video—as long as you hold it horizontally. Computational photography is used to compensate for the lens differences, and the output is two separate 1080p, 30fps videos that capture a 180-degree field of view.

These spatial videos are stored using the MV-HEVC (Multi-View High-Efficiency Video Coding) format, which uses H.265 compression to crunch this down to approximately 130MB per minute, including spatial audio. Unlike conventional stereoscopic formats—which combine the two views into a flattened video file that’s either side-by-side or top/bottom—these spatial videos are stored as discrete tracks within the file container.

Spatialify is an iOS app designed to view and convert various 3D formats. It also works well on Mac OS, as long as your Mac has an Apple Silicon CPU. And it supports MV-HEVC, so you’ll be all set. It’s just $4.99, a genuine bargain considering what it does. Find Spatialify here.

https://www.theverge.com/2024/2/1/24058088/meta-quest-3-spatial-video-vision-pro

The spatial video support will allow wearers to view 3D footage captured with Apple’s headset or an iPhone 15 Pro / Pro Max.

https://www.boredpanda.com/high-resolution-sun-pictures-alan-friedman/

https://avertedimagination.squarespace.com/

He uses a small (3 ½” aperture) telescope with a Hydrogen Alpha filter and an industrial webcam to capture the surface of the Sun, which looks surprisingly calm and fluffy in the incredible photos.

A tool that detects, crops, and presents reference & cg spheres

https://www.patreon.com/posts/nuke-auto-ai-96524139

https://www.linkedin.com/posts/davidgruwierlarsen_you-can-render-super-realistic-custom-bokeh-activity-7148259483440381952-I9hi

To achieve a custom pinhole camera effect with a custom bokeh in Arnold Raytracer, you can follow these steps:

1. Set the render camera with a focal length around 50 (or as needed)
2. Set the F-Stop to a high value (e.g., 22).
3. Set the focus distance as you require
4. Turn on DOF
5. Place a plane a few cm in front of the camera.
6. Texture the plane with a transparent shape at the center of it. (Transmission with no specular roughness)

https://s.studiobinder.com/wp-content/uploads/2022/07/Elements-of-Composition-The-Complete-Guide-Ebook.pdf

Local copy

https://diffusionlight.github.io/

https://github.com/DiffusionLight/DiffusionLight

https://github.com/DiffusionLight/DiffusionLight?tab=MIT-1-ov-file#readme

https://colab.research.google.com/drive/15pC4qb9mEtRYsW3utXkk-jnaeVxUy-0S

“a simple yet effective technique to estimate lighting in a single input image. Current techniques rely heavily on HDR panorama datasets to train neural networks to regress an input with limited field-of-view to a full environment map. However, these approaches often struggle with real-world, uncontrolled settings due to the limited diversity and size of their datasets. To address this problem, we leverage diffusion models trained on billions of standard images to render a chrome ball into the input image. Despite its simplicity, this task remains challenging: the diffusion models often insert incorrect or inconsistent objects and cannot readily generate images in HDR format. Our research uncovers a surprising relationship between the appearance of chrome balls and the initial diffusion noise map, which we utilize to consistently generate high-quality chrome balls. We further fine-tune an LDR difusion model (Stable Diffusion XL) with LoRA, enabling it to perform exposure bracketing for HDR light estimation. Our method produces convincing light estimates across diverse settings and demonstrates superior generalization to in-the-wild scenarios.”

https://lik.com/

https://thecamerastore.com/products/canon-rf-5-2mm-f2-8l-dual-fisheye

As part of the EOS VR System – this lens paired with the EOS R5 updated with firmware 1.5.0 or higher and one of Canon’s VR software solutions – you can create immersive 3D that can be experienced when viewed on compatible head mount displays including the Oculus Quest 2 and more. Viewers will be able to take in the scene with a vivid, wide field of view by simply moving their head. This is the world’s first digital interchangeable lens that can capture stereoscopic 3D 180° VR imagery to a single image sensor.

The pairing of this lens and the EOS R5 camera brings high resolution video recording at up to 8K DCI 30p and 4K DCI 60p.

https://www.the-digital-picture.com/Reviews/Canon-RF-5.2mm-F2.8-L-Dual-Fisheye-Lens.aspx

https://www.closeuphotography.com/50-dollar-componon-vs-mitutoyo-objective

What if you could find a lens for less than $100 that could produce image quality as good as a microscope objective

https://theasc.com/articles/sphere-and-the-big-sky-camera

Sphere is a 516′-wide, 366′-tall geodesic dome that houses the world’s highest-resolution screen: a 160,000-square-foot LED wraparound that fills the peripheral vision for 17,600 spectators (20,000 if standing-room areas are included). The curved screen is a 9mm-pixel-pitch, sonically transparent surface of LED panels with 500-nit brightness that produce a high-dynamic-range experience. The audience sits 160′ to 400′ from the screen in theatrical seating, and the screen provides a 155-degree diagonal field of view and a more-than-140-degree vertical field of view.

The image on the screen is 16K (16,384x16,384) driven by 25 synchronized 4K video servers.

https://nofilmschool.com/darren-aronofsky-sphere-camera

Cross section:

• Manual mode
• ISO 200
• Aperture F8
• Shutter speed 1/200
• Overhead flash manual mode to 1/16
• Flash diffuser

https://www.magiclantern.fm/

https://builds.magiclantern.fm/

Supported cameras:
5D Mark II, 5D Mark III, 6D, 7D, 50D, 60D, 500D/T1i, 550D/T2i, 600D/T3i, 650D/T4i, 700D/T5i, 1100D/T3, EOS M.

Example features:

• Zebras for under/over exposed areas.
• Focus peaking for quickly checking focus.
• Magic Zoom window to fine-tune focus.
• Cropmark overlays for 16×9 bars or any custom shape.
• Overlay a ghost image in live view.
• Spotmeter in live view.
• False color for precise exposure control.
• RGB histogram with RAW support.
• Waveform for perfect green screen lighting.
• Vectorscope for color tones.
• Kelvin and push-button white balance.
• Auto ETTR (Expose To The Right).
• Exposure Lock for manual mode.
• Manually override exposure settings in LiveView.
• Quickly switch between two exposure presets.
• Toggle exposure simulation on/off (Liveview).
• Dynamic range improvements (Dual ISO, other features being researched).
• Bracketing for exposure, flash, or depth-of-field.
• In-camera intervalometer.
• Custom bulb timer for extra-long exposures.
• Motion detection.
• Silent pictures without shutter actuation.
• Record voice tags for photos / videos.
• Analog / digital gain adjustments.
• Selectable input source.
• Toggle wind filter.
• Live audio monitoring through with headphones.
• Beep / test tones.

ColorTransformationAnalysis.nk local copy
ColorTransformationAnalysis.nk

https://www.fotorgear.com/pages/fotorgear-24mm-probe-lens-for-smart-phone

https://www.venuslens.net/product/laowa-aurogon-ff-10-50x-na0-5-supermicro-apo/

https://www.blackmagicdesign.com/ca/products/blackmagiccamera

You can adjust settings such as frame rate, shutter angle, white balance and ISO all in a single tap. Or, record directly to Blackmagic Cloud in industry standard 10-bit Apple ProRes files up to 4K! Recording to Blackmagic Cloud Storage lets you collaborate on DaVinci Resolve projects with editors anywhere in the world, all at the same time!

https://gilwizen.com/laowa-25mm-ultra-macro-lens-review/

https://www.cameralabs.com/laowa-25mm-f2-8-2-5-5x-ultra-macro-review/

• Pros:
  – Lightweight, small size for a high-magnification macro lens
  – Highest magnification lens available for non-Canon users
  – Excellent sharpness and image quality
  – Consistent working distance
  – Narrow lens barrel makes it easy to find and track subject
  – Affordable

• Cons:
  – Manual, no auto aperture control
  – No filter thread (but still customizable with caution)
  – Dark viewfinder when closing aperture makes focusing difficult in poor light conditions
  – Magnification range is short 2.5-5x compared to the competition

Combining a Laowa 25mm 2.5x lens with a Kenko 12mm extension tube

To find the combined magnification when using a Laowa 25mm 2.5x lens with a 12mm Kenko extension tube, given the magnification of the lens itself, the extension tube length, and the combined setup, you can calculate the total magnification.

First, consider the magnification of the lens itself, which is 2.5x.

Then, to find the total magnification when the extension tube is attached, you can use the formula:

Total Magnification = Magnification of the Lens + (Magnification of the Lens * Extension Tube Length / Focal Length of the Lens)

In this case, the extension tube length is 12mm, and the focal length of the lens is 25mm. Using the values:

Total Magnification with 2.5x = 2.5 + (2.5 * 12 / 25) = 2.5 + (30 / 25) = 2.5 + 1.2 = 3.7x

Total Magnification with 5x    = 5 + (5 * 12 / 25)      = 5 + (60 / 25) = 5 + 2.4 = 7.4x