Tag: shutter

21 Aug

Is your UV filter screwing up your photos?

Chris Lane / Camera parts, photography, review / / 4 Comments

I recently watched a little video from Kent Weakley about the dangers of using UV filters on your lenses. This is common practice by many photographers for a variety of reasons. It was done partially back in film days because of damage UV rays could do to the film itself. Now I think it is primarily to protect the lens from scratches, bumps, etc. He didn’t seem to go into absolutes on what exactly the effect to your photos would be, so I went ahead and tested it. I took a variety of photos on a 50mm 1.8 Canon lens with a Tiffen UV Protection Filter on a Canon 40D in different situations, with the exact same settings once with the UV filter and once without. This way I could see whether the color, light level, or anything else was affected. I decided to also test my ND filters to see what happened with those. In that case, since ND filters specifically reduce the amount of light into the camera, I only adjusted the shutter speed to compensate. Also, I made sure to clean my lens and filters thoroughly before the experiment. These are my results:
First up, my granary. Shot at ISO 200 1/250 f/3.5
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26 Oct

Camera Basic – Shutter Speed

Chris Lane / Camera parts, photography / / 2 Comments

The shutter is what really makes a camera. In essence a camera is just a box that holds some film or a sensor with a hole in the end that opens and closes to let in light. This is evident from as far back as the camera obscura which helped artists essentially trace a picture of a person to resemble their likeness. Similar to that is the pin-hole camera, where a piece of film or printing paper is placed inside a camera and literally a pin-hole is punched in the other end which can be uncovered to take some surprisingly phenomenal photographs. Only slightly more complex from this is a typical 35mm camera. This can introduce aperture, which is actually dependent on the lens. It also gives the ability to adjust mechanically the time the shutter is open. The size of the opening through the lens dramatically decreases the amount of time that the shutter need be open in comparison to pin-hole cameras. Then with DSLRs (Digital Single Lens Reflex) cameras, the only thing that is really changed is instead of the shutter opening to a silver halide film plane, it opens to a light sensor of some kind. Today the typical is the CMOS sensor, which is beyond the scope of this post to explain.

Shutter speed generally adjusts from 1/8000 of a second to as long as you want it open,
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03 Aug

Tips on photographing fireworks that pop

Chris Lane / photography, process / / 3 Comments

Fireworks in Warren, Minnesota 2010 © Chris Lane Photo

I recently went to the local county fair where I shot a number of photos of the fireworks display. They had an impressive show and I’d like to share some of it and how to take great fireworks photos yourself. Unfortunately, photos never can really give a real indication of not only the scope, but the feeling of a fireworks display.

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