Comments on: 4 Principles of Photography Marksmanship http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/ The latest in digital photography and camera reviews, news and rumors for Canon, Nikon, Sony, Olympus and more. Fri, 10 Feb 2012 08:29:01 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Nino http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/#comment-213841 Nino Tue, 11 Jan 2011 10:25:20 +0000 http://www.photographybay.com/?p=1010#comment-213841 Thanks Eric. Great advice and discussion. Learning all the time. Thanks Eric. Great advice and discussion.

Learning all the time.

]]> By: Kevin Gallagher http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/#comment-186693 Kevin Gallagher Fri, 01 Jan 2010 18:07:34 +0000 http://www.photographybay.com/?p=1010#comment-186693 All of the above and can you say Monopod. All of the above and can you say Monopod.

]]> By: Eric http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/#comment-185925 Eric Mon, 14 Dec 2009 16:54:10 +0000 http://www.photographybay.com/?p=1010#comment-185925 @Leo - I'm going to disagree with you on this one. There's no doubt that the lens is the same lens whether it's on a full frame or crop body; however, any camera-shake blur is magnified because of the increased "crop." The same would be true if you cropped the full frame image in post-processing - you would be magnifying any blur in the image. As a result, it is a sound practice to choose a reciprocal of your "effective" focal length on a crop body as your minimum shutter speed. On the Canon 7D with a 200mm lens, the rule of thumb would be minimum of 1/320s. In practice, I can tell a difference when using crop-bodies vs. full frame bodies. Taken a step further, the same is true on point and shoot cameras that can have an "effective" focal length that is 6x or 7x of the attached lens due to the tiny sensors. While it's not quite 6x, the Fuji S1500 has a true focal length of 5.9-70.8mm, which is equivalent to the field of view of 33-396mm on a full frame camera. When zoomed out to 70mm, the minimum shutter speed should be 1/400s rather than 1/70s (without taking image stabilization into account). It would not make sense (or sharp images) to try to shoot at 1/70s on the long end of the S1500's zoom. This example of the S1500 demonstrates the same principles for applying a "effective" focal length reciprocal to a DSLR with a crop sensor body. @Leo – I’m going to disagree with you on this one. There’s no doubt that the lens is the same lens whether it’s on a full frame or crop body; however, any camera-shake blur is magnified because of the increased “crop.” The same would be true if you cropped the full frame image in post-processing – you would be magnifying any blur in the image.

As a result, it is a sound practice to choose a reciprocal of your “effective” focal length on a crop body as your minimum shutter speed. On the Canon 7D with a 200mm lens, the rule of thumb would be minimum of 1/320s. In practice, I can tell a difference when using crop-bodies vs. full frame bodies.

Taken a step further, the same is true on point and shoot cameras that can have an “effective” focal length that is 6x or 7x of the attached lens due to the tiny sensors. While it’s not quite 6x, the Fuji S1500 has a true focal length of 5.9-70.8mm, which is equivalent to the field of view of 33-396mm on a full frame camera. When zoomed out to 70mm, the minimum shutter speed should be 1/400s rather than 1/70s (without taking image stabilization into account). It would not make sense (or sharp images) to try to shoot at 1/70s on the long end of the S1500′s zoom. This example of the S1500 demonstrates the same principles for applying a “effective” focal length reciprocal to a DSLR with a crop sensor body.

]]> By: Leo http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/#comment-185921 Leo Mon, 14 Dec 2009 14:35:10 +0000 http://www.photographybay.com/?p=1010#comment-185921 Quote [The general rule of thumb is to use the reciprocal of your focal length as a minimum shutter speed. For instance, if you are using a 200mm lens, your minimum shutter speed should be 1/200 of a second. (Note that image stabilization systems and “crop factors” can change this generality a bit.)] “crop factors” have no influenze what so ever. An 200 mm lens has the same distance to the sensor on a full frame sensor as on a crop sensor and the distance is the only factor that makes that general rule of thumb. It is an common mistake to think that your 200 mm lens changes when there is a crop sensor involved. The thing that is different is the covering, wich gives you more covering on a bigger sensor. Another difference has to do with Depth of Field (DOF). The acceptable DOF produced by a lens relates to the actual focal length, aperture setting, subject distance, circle of confusion and sensor size. Quote [The general rule of thumb is to use the reciprocal of your focal length as a minimum shutter speed. For instance, if you are using a 200mm lens, your minimum shutter speed should be 1/200 of a second. (Note that image stabilization systems and “crop factors” can change this generality a bit.)]
“crop factors” have no influenze what so ever. An 200 mm lens has the same distance to the sensor on a full frame sensor as on a crop sensor and the distance is the only factor that makes that general rule of thumb. It is an common mistake to think that your 200 mm lens changes when there is a crop sensor involved. The thing that is different is the covering, wich gives you more covering on a bigger sensor. Another difference has to do with Depth of Field (DOF). The acceptable DOF produced by a lens relates to the actual focal length, aperture setting, subject distance, circle of confusion and sensor size.

]]> By: Luther Bolen http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/#comment-185902 Luther Bolen Mon, 14 Dec 2009 03:11:13 +0000 http://www.photographybay.com/?p=1010#comment-185902 I was on an army pistol team for a few years, and I think that must have had something to do with the lack of blurred shots with my cameras---- Luther I was on an army pistol team for a few years, and I think that must have
had something to do with the lack of blurred shots with my cameras—-
Luther

]]> By: Johan http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/#comment-185708 Johan Fri, 11 Dec 2009 05:16:50 +0000 http://www.photographybay.com/?p=1010#comment-185708 Very nice advice. I want to add that it is often possible to lean against a wall, a car or something else and thus achieve even greater support. Leaning the camera on objects in the area will also add stability. There is always something you can use. learn to see what you can use. Very nice advice. I want to add that it is often possible to lean against a wall, a car or something else and thus achieve
even greater support.
Leaning the camera on objects in the area will also add stability.
There is always something you can use. learn to see what you can use.

]]> By: Francis http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/#comment-185608 Francis Wed, 09 Dec 2009 02:44:55 +0000 http://www.photographybay.com/?p=1010#comment-185608 I really dislike the analogy between someone wielding a gun and someone using a camera. It's already too much that the camera is considered a weapon by freedom-suppressing authorities around the world, we don't need it compared to a gun. And I was rather disgusted by your gun pointing in my face. Peace. I really dislike the analogy between someone wielding a gun and someone using a camera. It’s already too much that the camera is considered a weapon by freedom-suppressing authorities around the world, we don’t need it compared to a gun. And I was rather disgusted by your gun pointing in my face.

Peace.

]]> By: Roderick http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/#comment-185589 Roderick Tue, 08 Dec 2009 15:05:16 +0000 http://www.photographybay.com/?p=1010#comment-185589 Hmmm, I found that these principles have helped with my basketball skills. I don't dribble so much now. Hmmm, I found that these principles have helped with my basketball skills. I don’t dribble so much now.

]]> By: Hamza http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/#comment-185586 Hamza Tue, 08 Dec 2009 13:57:41 +0000 http://www.photographybay.com/?p=1010#comment-185586 I do that a lot, as my camera has poor low light performance, so i have to do all that just to get the shot at lower shutter speed :P I do that a lot, as my camera has poor low light performance, so i have to do all that just to get the shot at lower shutter speed :P

]]> By: Poagao http://www.photographybay.com/2009/12/07/4-principles-of-photography-marksmanship/#comment-185578 Poagao Tue, 08 Dec 2009 09:16:39 +0000 http://www.photographybay.com/?p=1010#comment-185578 It goes both ways...I found that after I was drafted into the Taiwanese army, my photography skills allowed me to get top riflemanship scores. Same principles. It goes both ways…I found that after I was drafted into the Taiwanese army, my photography skills allowed me to get top riflemanship scores. Same principles.

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