A resolution question at DVinfo.net

Alan Kenworthy · June 21st, 2005, 12:01 AM

Hi all,
I want to confirm something with you to ensure I'm not missing something.

When shooting my kid's baseball games, I notice that the back ground
if very detailed (like a hill full of grass, brush, trees) will lose
resolution the more I pull away from it.

Specifically, if I zoom into the hillside to focus on the detail, then
zoom out to take in the game (with auto focus off) then at some point I
notice this effect. I see it in the grass on the baseball field as well.

My assumption is that there is too much detail for the camera to digitally handle, or the MPEG compression/Mini-DV can't handle the bandwidth.

I'm viewing this on an HDTV.

What say the all knowing ones? :)

Thank you,

Alan

P.S. The video is still outstanding compared to any other SD video I've seen on my HDTV.

Ken Hodson · June 22nd, 2005, 06:05 PM

What you are seeing is depth of field (dof) Based on many factors your camera will focus to different distances. If your background is blurry you have a short depth of field. Background clear, you have a long depth of field. Your lens, zoom and F-stop will all come into play. I would recommend a book on basic photo/video shooting.

Alan Kenworthy · June 22nd, 2005, 11:41 PM

Quote:

Originally Posted by Ken Hodson

What you are seeing is depth of field (dof) Based on many factors your camera will focus to different distances. If your background is blurry you have a short depth of field. Background clear, you have a long depth of field. Your lens, zoom and F-stop will all come into play. I would recommend a book on basic photo/video shooting.

Ah, so it's user error then... ;)
I WILL find a book and begin learning what I'm missing.

Ken, thank you.

Alan

Ken Hodson · June 23rd, 2005, 02:06 AM

Well good luck then.
I think you probably already have some of the best baseball home vids there are. Good to see your intrest in working out the complexities.

June 21st, 2005, 12:01 AM	#1
Alan Kenworthy New Boot Join Date: May 2005 Posts: 13	A resolution question Hi all, I want to confirm something with you to ensure I'm not missing something. When shooting my kid's baseball games, I notice that the back ground if very detailed (like a hill full of grass, brush, trees) will lose resolution the more I pull away from it. Specifically, if I zoom into the hillside to focus on the detail, then zoom out to take in the game (with auto focus off) then at some point I notice this effect. I see it in the grass on the baseball field as well. My assumption is that there is too much detail for the camera to digitally handle, or the MPEG compression/Mini-DV can't handle the bandwidth. I'm viewing this on an HDTV. What say the all knowing ones? :) Thank you, Alan P.S. The video is still outstanding compared to any other SD video I've seen on my HDTV.

June 22nd, 2005, 06:05 PM	#2
Ken Hodson Trustee Join Date: Aug 2003 Location: Vancouver BC Canada Posts: 1,315	What you are seeing is depth of field (dof) Based on many factors your camera will focus to different distances. If your background is blurry you have a short depth of field. Background clear, you have a long depth of field. Your lens, zoom and F-stop will all come into play. I would recommend a book on basic photo/video shooting. __________________ Damnit Jim, I'm a film maker not a sysytems tech.

June 23rd, 2005, 02:06 AM	#4
Ken Hodson Trustee Join Date: Aug 2003 Location: Vancouver BC Canada Posts: 1,315	Well good luck then. I think you probably already have some of the best baseball home vids there are. Good to see your intrest in working out the complexities. __________________ Damnit Jim, I'm a film maker not a sysytems tech.