05-25-2017, 02:17 PM
Ken Wrote:Oh, oops, had it backwards.
Speaking of aperture, getting confused with how it's used. When you say "high aperture" you mean high in reference to the value of the number right (in this case 20) - not the actual size of the aperture (since f/20 is actually a small physical size) right? So, high/low refers to value and large/small would refer to the physical size and is basically inverse of the value? Seems like people use each interchangeably.
Secondly - is it a good rule of thumb to try and guesstimate speed of the "target" in MPH and then halve that for shutter speed? So, say you're trying to get a bike assume it's going 16MPH and use shutter of 1/8?
Sorry, just trying to get a grasp on the basics.
Yeah. I mainly use F stops (instead of saying higher or lower) just to help understand better. Ironically the older generation uses high aperture to mean low fstop and the new generation switches it around. No idea why or how that happened but that's part of all of the confusion... Check this out:
<!-- m --><a class="postlink" href="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Apertures.jpg/220px-Apertures.jpg">https://upload.wikimedia.org/wikipedia/ ... rtures.jpg</a><!-- m -->
<!-- m --><a class="postlink" href="http://camerasim.com/apps/original-camerasim/web/">http://camerasim.com/apps/original-camerasim/web/</a><!-- m -->
On the second point... no. That was relative to 100-200meters away on a sunny day on track. Handheld you'll be lucky to get a "stable" shot at 1/50. Some can and VR helps but I draw the line around 1/50. For a biker you'd probably be better off with a wide angle and 1/60th or so. It's been awhile since I shot one but I'd play around there.
SlimKlim Wrote:I don't want to speak for Garrett but I don't think his shutter speed math is broadly applicable. The distance between you and the subject is a big factor, as well as whatever apeture settings you're using. A shutter of 1/8s to get a shot of the guy on the bicycle would be almost impossible to get it crisp, just of the top of my head I think a 1/40-1/60s in that situation would still allow you to get the cool blurry background, assuming the 16mph bike is much closer to you than the 100mph race cars.
^Nope it's not. It's all relative and you hit it right on the head.
Here's some examples from a very cloudy day at Summit Point with a private group.
1/80 F6.3 ISO 100
![[Image: Track_Day_14.jpg]](https://preview.ibb.co/d8b95v/Track_Day_14.jpg)
1/100 F11 ISO 100
![[Image: Track_Day_34.jpg]](https://preview.ibb.co/eeEJyF/Track_Day_34.jpg)
1/125 F6.3 ISO 100
![[Image: Track_Day_58.jpg]](https://preview.ibb.co/bM7Gkv/Track_Day_58.jpg)
1/60 F7.1 ISO 100
![[Image: Track_Day_89.jpg]](https://preview.ibb.co/nvbWJF/Track_Day_89.jpg)
bb img
Previous vehicles:
2006 Toyota Tacoma
2011 Jeep Patriot
1998 Land Rover Discovery
1995 Land Rover Discovery
1995 BMW M3
1995 Mazda Miata
2000 Jeep Cherokee
1989 BMW 325is
2004 Subaru Forester XT
1984 BMW 325e
2003 Subaru WRX
2004 Honda Civic SI
2015 Scion TC
2000 Ford Expedition
Follow my adventures on instagram.
2006 Toyota Tacoma
2011 Jeep Patriot
1998 Land Rover Discovery
1995 Land Rover Discovery
1995 BMW M3
1995 Mazda Miata
2000 Jeep Cherokee
1989 BMW 325is
2004 Subaru Forester XT
1984 BMW 325e
2003 Subaru WRX
2004 Honda Civic SI
2015 Scion TC
2000 Ford Expedition
Follow my adventures on instagram.



