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<blockquote data-quote="Revet" data-source="post: 398488" data-attributes="member: 17612">I just about finished reading David Busch's book on using the D7100 and I feel comfortable with all the settings and customizing for my use.&nbsp; I do have two questions though:1)&nbsp; In his book (p. 311), he talks about using the virtual horizon in a 3D fashion (tilt, pitch, roll etc).&nbsp; He shows a virtual horizon picture of the viewfinder (although it looks like the live view to me)which would work in 3D (sideways tilt, and front to back tilt).&nbsp; I have tried every setting I can think of and all I can ever get is a horizon showing if the camera is tilted clockwise or counterclockwise along an horizontal axis running from front to back of the camera.&nbsp; I can get this to work if holding the camera horizontally or vertically (but I don't get both indicators at once, only the one on the bottom of the screen whether I am holding it vertically or horizontally).&nbsp; He indicates you can have a virtual horizon displayed that would show rolling motions forward or backward along a horizontal axis running from left to right on the camera.&nbsp;&nbsp; Is this actually possible or is it a misprint in the book??&nbsp; It would be a nice feature for me since the bubble levels on my tripod are horrible and difficult to adjust.&nbsp; 2)&nbsp; What is the X250 setting just past BULB (or whatever you set you flash sync speed at, ie. X320) for in M and S mode.&nbsp; When I am in M or S modes I am usually much closer to the 1/250 on my control wheel than going way over past BULB to the X250 setting.&nbsp; Why is this there??&nbsp; Can't&nbsp; I just use 1/250 when using a flash or increase to over 1/320 to start using auto FP on my SU-700??Thanks for any help!!John</blockquote>

[QUOTE="Revet, post: 398488, member: 17612"] I just about finished reading David Busch's book on using the D7100 and I feel comfortable with all the settings and customizing for my use. I do have two questions though: 1) In his book (p. 311), he talks about using the virtual horizon in a 3D fashion (tilt, pitch, roll etc). He shows a virtual horizon picture of the viewfinder (although it looks like the live view to me)which would work in 3D (sideways tilt, and front to back tilt). I have tried every setting I can think of and all I can ever get is a horizon showing if the camera is tilted clockwise or counterclockwise along an horizontal axis running from front to back of the camera. I can get this to work if holding the camera horizontally or vertically (but I don't get both indicators at once, only the one on the bottom of the screen whether I am holding it vertically or horizontally). He indicates you can have a virtual horizon displayed that would show rolling motions forward or backward along a horizontal axis running from left to right on the camera. Is this actually possible or is it a misprint in the book?? It would be a nice feature for me since the bubble levels on my tripod are horrible and difficult to adjust. 2) What is the X250 setting just past BULB (or whatever you set you flash sync speed at, ie. X320) for in M and S mode. When I am in M or S modes I am usually much closer to the 1/250 on my control wheel than going way over past BULB to the X250 setting. Why is this there?? Can't I just use 1/250 when using a flash or increase to over 1/320 to start using auto FP on my SU-700?? Thanks for any help!! John [/QUOTE]

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