Motion Blur: If a person is shooting ISO 1800, shutter speed of 1/125 can you still get motion blur or is camera shake or something else? Thank you Bob...

Transbuff1985 Loc: east central Iowa

If a person is shooting ISO 1800, shutter speed of 1/125 can you still get motion blur or is camera shake or something else?
Thank you
Bob

Linda From Maine Loc: Yakima, Washington

Yes, you can get motion blur from the subject or yourself (probably what you mean by camera shake) at 1/125 second. Post a photo if you want more detailed discussion about a specific situation. You could even be looking at a focus issue; let's not keep guessing

ISO doesn't specifically affect blur or shake. Some folks will say "raise the ISO in order to use a faster shutter speed." I say, set the shutter speed first.

dsmeltz Loc: Philadelphia

Transbuff1985 wrote:

If a person is shooting ISO 1800, shutter speed of 1/125 can you still get motion blur or is camera shake or something else?
Thank you
Bob

Depends on a lot of things. What length? How is your hand holding technique? Is it windy? .......

You really are not giving enough information

Transbuff1985 Loc: east central Iowa

Linda From Maine wrote:

Yes, you can get motion blur from the subject or y... (show quote)

Thanks Linda for info, will post more shortly. Bob

Transbuff1985 Loc: east central Iowa

dsmeltz wrote:

Depends on a lot of things. What length? How is your hand holding technique? Is it windy? .......

You really are not giving enough information

Thanks dsmeltz, yes know not enough info, but that all I have right now, and curious about the high ISO. Will post what is going on. Thank you Bob

Transbuff1985 Loc: east central Iowa

Daughter runs Photo Booth with a Canon T3 I think that is right camera, multiple booths, but one seems to give problems with motion blur. (each camera stays with each booth) I think the way camera is set up in BOOTH being not separated from the booth getting shake, rattle and roll sort of speaking from clients have too much fun. I have informed her to try shooting a higher Shutter Speed, but thinking a 1800 ISO should be alright with a Shutter speed of 100 or 200. Am I WRONG??

Sunnely Loc: Wisconsin

Transbuff1985 wrote:

If a person is shooting ISO 1800, shutter speed of 1/125 can you still get motion blur or is camera shake or something else?
Thank you
Bob

I still have a lot of learning and practice to do about the "holy trinity" of digital photography (ISO, Shutter speed, Aperture). I find the following video very helpful in understanding, most particularly, the issue of camera shake/motion blur. As a beginner and only speaking for myself, I like the presentation to be short, to the point, and with demo. (Hint for all tutorial experts.) https://www.youtube.com/watch?v=uZgL4QYyf6o

LarryFB Loc: Depends where our RV is parked

Transbuff1985 wrote:

Daughter runs Photo Booth with a Canon T3 I think that is right camera, multiple booths, but one seems to give problems with motion blur. (each camera stays with each booth) I think the way camera is set up in BOOTH being not separated from the booth getting shake, rattle and roll sort of speaking from clients have too much fun. I have informed her to try shooting a higher Shutter Speed, but thinking a 1800 ISO should be alright with a Shutter speed of 100 or 200. Am I WRONG??

I don't think you understand. ISO setting, by itself, does not allow or disallow motion blur. Motion blur is caused by too slow of shutter speed. A faster shutter speed is what you need. Of course you may have to increase ISO to be able to use a faster shutter speed. Based on your post, the first option is to go to a faster shutter speed, depending on conditions it could even be faster than the 1/200 to mentioned.

Transbuff1985 Loc: east central Iowa

Sunnely wrote:

I still have a lot of learning and practice to do about the "holy trinity" of digital photography (ISO, Shutter speed, Aperture). I find the following video very helpful in understanding, most particularly, the issue of camera shake/motion blur. As a beginner and only speaking for myself, I like the presentation to be short, to the point, and with demo. (Hint for all tutorial experts.) https://www.youtube.com/watch?v=uZgL4QYyf6o

Sunnely Thank you I am very new to digital cameras, will watch the video Bob

Sunnely Loc: Wisconsin

Transbuff1985 wrote:

Sunnely Thank you I am very new to digital cameras, will watch the video Bob

You're welcome. Good luck.

Transbuff1985 Loc: east central Iowa

LarryFB wrote:

I don't think you understand. ISO setting, by itself, does not allow or disallow motion blur. Motion blur is caused by too slow of shutter speed. A faster shutter speed is what you need. Of course you may have to increase ISO to be able to use a faster shutter speed. Based on your post, the first option is to go to a faster shutter speed, depending on conditions it could even be faster than the 1/200 to mentioned.

Thank you LarryFB you are right not understanding. Still green at this. Still confused about the Triangle of settings, but beginning to understand it takes more than one setting to correct for possible flaws in one's own older way of doing. Use to be a faster ASA would help compensate for motion blur or low light level conditions (to a point).

Linda From Maine Loc: Yakima, Washington

Transbuff1985 wrote:

... but thinking a 1800 ISO should be alright with a Shutter speed of 100 or 200. Am I WRONG??

Think of the specific situation you described: if some photos are fine and some aren't, and each set-up (both camera settings and the physical design of the book) is the same, then some customers are indeed "having too much fun" by moving around faster than 1/200 sec can capture.

The only thing that stops unwanted subject motion blur is a faster shutter speed (or a flash). In film, a faster ASA works the same way ISO does: enables you to increase shutter speed (or use a smaller aperture) without underexposing the image.

If 1/200 second isn't fast enough, then try 1/400. In order to maintain the same exposure, you must compensate for less time by an increase in sensitivity (ISO 3200 etc) or...open the aperture wider. What f/stop are they set for, just out of curiosity, and what focal length? And how far is camera from the people? Perhaps you can keep the ISO "reasonable" by opening the aperture further when you increase shutter speed.

hassighedgehog Loc: Corona, CA

Agree shutter speed. A higher ISO allows for a higher shutter speed, but does nothing to set it on the camera. It is shutter speed that determines the exposure time and stop of motion. This is where familiarity with film makes understanding easier. If your camera is loaded with lower ISO film you understand more light is needed to stop motion.

PHRubin Loc: Nashville TN USA

LarryFB wrote:

I don't think you understand. ISO setting, by itself, does not allow or disallow motion blur. Motion blur is caused by too slow of shutter speed. A faster shutter speed is what you need. Of course you may have to increase ISO to be able to use a faster shutter speed. Based on your post, the first option is to go to a faster shutter speed, depending on conditions it could even be faster than the 1/200 to mentioned.

As he said, motion blur is controlled by shutter speed ALONE! However, using a fast shutter speed alone will reduce the light captured by the sensor resulting in an underexposed photo. To compensate one increases the ISO (or opens the aperture more). Increasing the ISO alone does NOT reduce motion blur.

Transbuff1985 Loc: east central Iowa

Linda From Maine wrote:

Think of the specific situation you described: if ... (show quote)

Thanks Linda wished I could describe more of what you ask just from memory- 1 Flash is used, booths around 4 feet square, using f3-f4.5, standard 18mm-75mm lens.