I've noticed that the panning slant vision problem is progressively more apparent the more I'm zoomed in (with kit 14-140 lens). Can anyone explain why this might be so? I thought the problem was due to the speed at which the sensor gets scanned and can't think why this might change when zoomed in.
Navigation
Install the app
How to install the app on iOS
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
More options
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Why is slant-o-vision worse when zoomed in?
- Thread starter cskilbeck
- Start date
dust'n the callipygous
Well-known member
If you try to think about It in the same way that image stabilization makes a bigger difference on longer lenses, then it will make sense. The refresh rate is the same, but with a longer lens, any movement in the frame is much more drastic. Say you're shooting a vertical pole 50 feet away and you want to do a 10 degree pan to the right. With panasonic's 7-14mm lens (at 7mm), most of the frame will stay the same. The pole might just move a few inches. But at 140mm on your kit lens, the pole will start by taking up a large portion of the frame, and end completely out of frame with the same amount of movement. Because the frame is so much more compressed, the movement, and the skew, becomes much more dramatic. There will be much more horizontal movement in the frame overthe same amount of time. Hope that helps
Last edited:
Barry_Green
Moderator
Read the article on the CMOS sensors in the "Articles" section and it'll explain it a lot more.
The thing is how much relative motion an object exhibits, as compared to the sensor. When you're zoomed in, the image is magnified -- and therefore any motion it has, is also magnified. And therefore, the rolling shutter lean/skew is proprotionally magnified too.
The thing is how much relative motion an object exhibits, as compared to the sensor. When you're zoomed in, the image is magnified -- and therefore any motion it has, is also magnified. And therefore, the rolling shutter lean/skew is proprotionally magnified too.