A Tedious Explanation of the f/stop by Matthew Cole Photographers set their exposure using a combination of shutter speeds and f/stops to get the correct amount of light on the sensor (or film). The shutter speed regulates how long the sensor is exposed to light coming through the lens. Back in the days of film, that was pretty much it for exposure because your ISO (and white balance too) was set by your film choice and you couldn't vary it within the roll. Despite being one of the exposure controls in photography, the f/stop (or aperture, the terms are interchangeable) remains a source of confusion and mystery to many photographers, even to some who use it all the time. Fill That Bucket! My favorite analogy for exposure is filling a bucket with water. Shutter Speeds Shutter speeds are a bit easier to understand, so I'll start with those. 8 seconds 4 seconds 2 seconds 1 second 1/2 second 1/4 1/8 1/15 1/30 1/60 1/125 1/250 1/500 1/1000 F/Stops f/stops are a bit more confusing because the numbers appear so arbitrary. Yes. No.
TwistedSifter blog | Fro Knows Photo - Waterfox Print Your Photos! We shoot tons of digital images. Mostly posting them on our websites, facebook, and instagram. Taking the time to make actual prints is so gratifying. There’s something about seeing your work printed. I thought a lot about how I wanted to make these prints. To resist the compulsion to shoot a ton of images in a new place and really think about the images, subjects, time of day, composition and common threads. I’ve only ever printed on paper. I’d been toying with the idea of doing the aluminum prints. Being that I loved the look of that print, I ordered a bunch more. My message is that if you’ve been toying with the idea of making prints, do it. Please subscribe and leave your questions and comments below. Arcade Fire First Person Shooter with Nikon D4s, Nikon 200-400 VR II and GoPro Using a Nikon 200-400 F4 VR II generally is not recommended for shooting from the photo pit of a concert where the pit has 15 photographers and no room. Welcome folks! (more…)
500px Blog 500px Shop offers you the best photography supplements, carefully curated by our team. We’ll introduce high quality and useful products to make your lives easier and your photography experiences even more amazing. Today we bring you the Photographer’s Pouch, designed and produced by Will Kortum. Hi Will! Hi! How did you come up with this idea? I first came up with the Photographer’s Pouch through frustration with my camera bag. Why did you choose to use felt as the material? I chose smooth felt because I wanted something that would be soft enough to protect lenses, filters, and cameras from scratches but that would be less prone to sticking to Velcro. So you're a photographer yourself. I primarily shoot street photography, but I’ve been experimenting with urban landscapes recently. What do you shoot with? For the past 7 months or so, I was shooting almost exclusively Neopan 400 in my Leica M6 and two Ricoh GR1’s, but I’ve recently been focusing more on color work. Awesome advice.
Field of View Crop Factor (Focal Length Multiplier) With the advent of Digital SLR Camera Bodies, the term Field of View Crop Factor has come into our world. The source of this term is the smaller-than-35mm sensor present in many of Canon and other manufacturers' DSLR sensors. Canon's EF Lenses still focus the image on the same plane as before, but sensors smaller than 35mm sensors do not capture the entire image. Thus, the image is "cropped". Here is a diagram illustrating the size differences between Canon's currently available DSLR sensors (I personally don't expect to see any new sizes introduced by Canon in the near future). The above image lists the FOVCF and the approximate size of the sensors. When looking through the viewfinder on Canon's DSLR cameras, the sensor size is immediately obvious as the viewfinder size generally reflects the sensor size. I should also note that what is seen in the viewfinder is also affected by viewfinder magnification which varies across Canon's EOS line. What affect does the FOVCF have on lenses?
Le Blog de la Photo Strobist Crop factor and interchangeable lens cameras Understanding focal length multipliers, often referred to as crop factor, seems confusing at first. It doesn’t have to be. But it’s important to get the gist of it before buying lenses for an interchangeable lens camera with a crop factor. As an example, a 50mm lens on DSLR with a focal length multiplier (FLM) effectively becomes mid-telephoto. Why? To calculate the effective focal length of a lens, the focal length multiplier of the camera must be used. Canon’s entry level camera’s multiplier is usually 1.6. A 50mm interchangeable lens on a digital camera with a 1.5 multiplier would have an effective focal length of 75mm. Full frame DSLRs do not have multipliers or, more correctly, they have a multiplier of one. Wide angle shots and focal length multiplier If you take a lot of wide angle shots, lenses like the popular 28mm wide angle lens will no longer give a wide angle of view. Shutter speed, camera shake and FLM Looking through the viewfinder :: DSLR Crop Factor conversion chart >
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