Tag Archives: Lenses

Time to Clean & Check your DSLR Camera’s Sensor & Lenses

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If you’re using an DSLR camera, you’ll eventually require a “Clean & Check” to remove dust spots you encounter due to a dirty camera sensor.  When it occurs it is the result of sensor dust and you’ll need to know how to clean the sensor, and how to minimize the risk of this happening again. What does Sensor Dust look like? A dirty camera sensor is most apparent in smooth, light regions, such as bright skies: Visually check your sensor by taking a photo that includes the sky, Example A, or if in a studio a white or a white/off-white wall. Then import … Continue reading →

Imaging Sensors: Full Frame vs APS-C (Crop Frame)

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Steven Sasson was the pioneer and driving force in the development of both the digital camera and the DSLR.   He invented the first digital camera while working for Eastman Kodak in 1975. Seen below is Sasson’s first generation digital camera, as you can see,  it was quite large and weighed approximately 8 pounds. Not exactly as portable as today’s digital point and shoots or DSLRs. In 1989 along with Robert Hill, Sasson created the Kodak ECAM D5000. It was the first version of the modern day DSLR (Digital Single Lens Reflex) camera. The digital imaging (capture) sensor Sasson developed replaced film which ultimately changed … Continue reading →

Bokeh: Understanding Lenses – Part 3

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The first two installments of this three part series discuss types of lenses; explain focal length, background perspective, depth of field, and how to purposely throw your background out of focus. If you follow conversations on online photo boards you have probably heard threads discussing bokeh. But what is Bokeh and how can you create it? First of all, Bokeh is a Japanese term. It is used to describe the subjective aesthetic quality of out-of-focus areas of a photographic image. All lenses are capable of creating bokeh of some sort. Furthermore, the best examples are created using prime lenses with larger apertures, like f/1.4 … Continue reading →

Depth of Field: Understanding Lenses – Part 2

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Part 1 of this series explains how the focal length of lenses control depth of field and background perspective.How does this apply to the photographs you want to create?  Once you master controlling your depth of field you will be able to control what is in focus; you can purposely throw your background out of focus so only your subject(s) are in focus or you can choose to have your background in focus to include it in your portrait to compliment your subject(s).   A portrait, by definition, is a portrayal; to depict, written or visually an image or group of images … Continue reading →

Lenses – Understanding How They Work – Part I

As technology continues to advance DSLR camera bodies have a shorter useful life as, on average, most photo enthusiast and professionals upgrade their camera bodies every two years. Lenses on the other hand, if properly maintained, having a lifespan approximately 20 years, have more longevity. How does this translates to you the consumer? As long as you maintain your loyalty to a specific camera brand your lenses can be used with all compatible camera bodies. Your optics are ultimately most important, the better quality the lens, the better quality your images. With this in mind, it would be wise for you to invest in the best … Continue reading →