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'Everything I photograph, I photograph with love.' I have several confessions and secrets to share--I've had PhotoShop for years but never learned how to create backgrounds or manage the program [...]

It has been around twelve years since I began taking photos for the theater and it's something I really enjoy. I take photos for Overshadowed Theatrical Productions, a community theater [...]

Retiring in 2016, I have more time for my hobby, photography. Since then, my favorite subject is sports photography. Most of my photos were taken with the Canon[R] EOS 5D [...]

I took my first balloon flight in 1988 at a small balloon rally in Silver City, New Mexico. I enjoyed the experience so much that I obtained a job chasing [...]

Insect macro photography rewards patience and a steady hand, two qualities that I have developed ever since I started out. The uniqueness of each insect I come across motivates me [...]

Whether you are a photographer just getting started with nature photography or one that had plans for trips that are now curtailed by COVID, there is an opportunity to continue [...]

In the early part of 2018, I was approached by the Christ Church Cathedral in downtown Houston about an art project on the diversity and depth of the population of [...]

When most people hear 'macro photography,' they visualize close-up images of flowers and bugs. Even though I love shooting the intricate details of flower stamens or the hair on a [...]

Soil salinisation is a global problem that hinders the sustainable development of ecosystems and agricultural production. Remote and proximal sensing technologies have been used to effectively evaluate soil salinity over large scales, but research on digital camera images is still lacking. In this study, we propose to relate the pixel brightness of soil surface digital images to the soil salinity information. We photographed the surface of 93 soils in the field at different times and weather conditions, and sampled the corresponding soils for laboratory analyses of soil salinity information. Results showed that the pixel digital numbers were related to soil salinity, especially at the intermediate and higher brightness levels. Based on this relationship, we employed random forest (RF) and partial least-squares regression (PLSR) to model soil salt content and ion concentrations, and applied root mean squared error, coefficient of determination and Lin's concordance correlation coefficient to evaluate the accuracy of models. We found that ions with high concentration were estimated more accurately than ions with low concentrations, and RF models performed overall better than PLSR models. However, the method is only suitable for bare land of coastal soil, and verification is needed for other conditions. In conclusion, a new approach of using digital camera images has good potential to predict and manage soil salinity in the context of precision agriculture with the rapid development of unmanned aerial vehicles. Keywords: coastal soil salinity, colour component, digital camera, random forest. Received 8 January 2020, accepted 28 August 2020, published online 1 October 2020, Introduction Soil salinisation is an important issue worldwide. Excessive salts, e.g. sodium, affect the disaggregation of soil aggregates and deplete soil nutrients, and further cause soil structure deterioration and soil [...]

The spring is the time of awakening and rebirth. Everything in nature rouses, plants are in a hurry to reach for the sun and light, the animals instinctively know it [...]

The main factors that affect the performance characteristics of determining the turbidity and chromaticity of water by digital colorimetry in field (on-site) are studied. The test samples are suspensions of formazine and solutions composing the dichromate-cobalt chromaticity scale, which are used for calibration in standardized spectrophotometric methods for monitoring water quality. The affecting factors include the geometry of the vessel for colorimetric samples, the manufacturing quality of the adjustment device (drawing of chess fields), the method of fixing the camera in shooting, the method of performing the blank experiment, the illumination of the sample in shooting, the degree of cropping of the edges of the photograph of the chess fields in its digital processing, camera specifications, and the mutual effect of chromaticity and turbidity on the contrast of the photograph and its mean-root-square brightness. It is demonstrated that for the design of the on-site photographic measurements it is enough to have a digital camera, an adjustment device, and a measuring vessel. Photographing can be done with a camera held in hands. An empty measuring vessel may be used as an optically transparent sample for the blank experiment. Recommendations have been developed on optimizing the photographic measurements of turbidity and chromaticity. A possibility of the simultaneous determination of turbidity and chromaticity is shown by the example of monitoring the quality of tap water., Author(s): V. I. Golovanov [sup.1] Author Affiliations: (1) grid.77728.3d, 0000 0001 0499 782X, Department of Chemistry, Chelyabinsk State University, , 454001, Chelyabinsk, Russia The use of household color-recording devices, such [...]

Byline: Tuba. Sirin, Zerrin. Karaaslan, Burcu. Arkali, Pinar. Bekdik, Tuba. Akinci, Fatma. Candan, Emel. Akarsu, M. Baslo, Elif. Orhan, A. Oge Background and Objective: The aim of this study was [...]

A very common request I get from beginners is to check if their camera or lens is working correctly, as they find their images are usually blurry. There are many [...]