Ugly Hedgehog - Photography Forum
Home Active Topics Newest Pictures Search Login Register
Main Photography Discussion
focal points canon
Page 1 of 3 next> last>>
Sep 21, 2022 16:08:28   #
MS. DONNA Loc: NEW SMYRNA BEACH FL
 
How many focal points do you choose when you photograph a family or groups of people ( 8 to 10 )

5d markiv canon

Reply
Sep 21, 2022 16:12:35   #
User ID
 
MS. DONNA wrote:
How many focal points do you choose when you photograph a family or groups of people ( 8 to 10 )

5d markiv canon

One is enuf, and less risky.

Reply
Sep 21, 2022 16:13:40   #
MS. DONNA Loc: NEW SMYRNA BEACH FL
 
one? put one middle person? and everyone will be in focus ?

Reply
 
 
Sep 21, 2022 16:16:43   #
Haydon
 
I'd recommend two rows and try to have every face on the same focal plane. I know that's not exactly the answer to your question but it should give you eveyone in focus. Try to use a 50 mm lens around F5.6. Using a single center focus point should work under those conditions.

Reply
Sep 21, 2022 16:18:57   #
MS. DONNA Loc: NEW SMYRNA BEACH FL
 
ok my 50 mm broke i have a 24-70

Reply
Sep 21, 2022 16:22:09   #
Haydon
 
MS. DONNA wrote:
ok my 50 mm broke i have a 24-70


Shooting wider might be more tempting but the distortion even with corrections isn't advisable.

Reply
Sep 21, 2022 16:24:51   #
MS. DONNA Loc: NEW SMYRNA BEACH FL
 
the one focal point is what i needed to know there are so many I normally shot birds in flight and use spot metering and would like to learn more on families and people

Reply
 
 
Sep 21, 2022 16:38:12   #
autofocus Loc: North Central Connecticut
 
Donna, first make sure your camera is set to One Shot Focus, not AI Servo or AI focus. Using the center focus point place it on the center subject's face. Do this while you are holding the shutter button half down, and recompose the shot as needed. After you recompose, follow through and take the shot by pressing the shutter all the way down. You must be in one of the semi auto, or full manual mode to do this, and not in auto. Use of a small aperture will increase what's in acceptable focus. The camera's lens works very much like our own eyes, and like our eyes it can only focus (tack sharp) on one plane, or one subject, all else can be controlled for acceptable focus, and again, a smaller aperture will help in that regard. So, if light and exposure permits, try shooting in aperture priority, set your aperture to around f/8, and do what I said above with the focus point. And to avoid subject distortion, or lens edge softness, avoid putting any of the subjects near the outer edges of the lens's field of view. Hope this is clear, and helps.

Reply
Sep 21, 2022 16:46:40   #
Longshadow Loc: Audubon, PA, United States
 
MS. DONNA wrote:
one? put one middle person? and everyone will be in focus ?

For odd number of rows I figure who is in the center of the middle row and focus on them.
For two rows I lock focus on the 2nd or 3rd person to the left of the "center" person and recompose. That way the actual focus should be approximately between the two rows. If four rows I use the 2nd or 3rd person to the left of the center person in the second row. (The plane of focus always follows an arc.)
(I always use single spot focus, for everything, just picking my focus point.)

Reply
Sep 21, 2022 16:49:09   #
MS. DONNA Loc: NEW SMYRNA BEACH FL
 
Thank you ,,,I will have tripod and its my family so i will put on a timer so I can be in the shot as well I can shoot in manaul mode

Reply
Sep 21, 2022 16:54:03   #
Longshadow Loc: Audubon, PA, United States
 
By the way, for lots of people left to right, unless the depth of field is large, the people on the ends can be more out of focus, more as one approaches the ends. It's due the "plane of focus moving along the arc" thing.

Reply
 
 
Sep 22, 2022 00:51:45   #
lmTrying Loc: WV Northern Panhandle
 
Longshadow wrote:
By the way, for lots of people left to right, unless the depth of field is large, the people on the ends can be more out of focus, more as one approaches the ends. It's due the "plane of focus moving along the arc" thing.


You just mentioned something that I have often wondered about, plane of focus, or arc of focus. Lenses are spherical. If you stretch a string from the lens out to the focal point, it will not define a flat plane. I have noticed that the people on the ends of a long line tend to get distorted. Distortion or focus?

Reply
Sep 22, 2022 07:23:19   #
Tomfl101 Loc: Mount Airy, MD
 
Use single point focus. For a group of 8-10 use one or two rows. Focus carefully on the front row. Significant depth of field using a small aperture is advised but not necessary. See my example shot at 2.8 with a 50mm lens in evening light.


(Download)

Reply
Sep 22, 2022 08:28:32   #
bobmcculloch Loc: NYC, NY
 
User ID wrote:
One is enuf, and less risky.


Agreed

Reply
Sep 22, 2022 08:50:36   #
Jimmy T Loc: Virginia
 
MS. DONNA wrote:
Thank you ,,,I will have tripod and its my family so i will put on a timer so I can be in the shot as well I can shoot in manaul mode


If you are going to use the tripod and run to get in the pic don't forget to put the camera in manual focus after you have focused.
also, you may wish to consider this Handy Dandy Guide, donated by another UHH.
Best Wishes,
JimmyT Sends


(Download)

Reply
Page 1 of 3 next> last>>
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.
Main Photography Discussion
UglyHedgehog.com - Forum
Copyright 2011-2022 Ugly Hedgehog, Inc.