Help with focus technique....
Would you please look at these images and let me know how can I improve so most of the images are in focus?
Here are some spaces:
D5100 with built in flash on
35mm/f1.8 at f2.8
Single point AF
All the images were shot with a focus point on the right eye with no repositioning.
AF point selected: top one in the 4th column.
All 14 images were uploaded
Only these 5 images are in focus:
#1. "RE: Help with focus technique...." | In response to Reply # 0
I don't really see what your complaint is. They all look quite focused to me even at the larger size. What are you seeing? You are shooting with a fairly wide aperture so DOF is small.
#2. "RE: Help with focus technique...." | In response to Reply # 0
At a quick glance, I am with Alan about these looking pretty good. After resizing them for the web, you would need to remember to resharpen them.
Since the boy is not sitting still, 1/60 might be a little slow for motion blur problems.
Since only the center point is a cross-type focus point, it is the only one that will have the extra precision. I am not sure if that would make a difference in this case.
Seattle, WA, USA
D700, D200, D70S, 24-70mm f/2.8, VR 70-200mm f/2.8 II,
50mm f/1.4 D, 70-300mm f/4.5-5.6 VR, 18-70mm f/3.5-4.5 DX
#3. "RE: Help with focus technique...." | In response to Reply # 2
Here are crops for comparison:
You can only see the issue when the images are displayed at 1:1 zoom level.
DOF at 2.8 is low but should be sufficient (couple if inches).
I will try to focus with the center point and if that does not help bump up shutter speed.
#6. "RE: Help with focus technique...." | In response to Reply # 5
I don't think there was anything wrong with your first set of images. If the second set at a faster shutter speed looks better to you, the initial problem was either *subject movement (very possible, given the subject) or *camera shake (also possible.)
Are you using VR or a tripod?
At those apertures your plane of focus is going to be very thin. Any kind of motion is likely to move your focal plane to somewhere you didn't intend it to be.
working on it in Middle TN
35 mm 1.8 Nikkor
18-55 mm Nikkor VR
55-200 mm Nikkor VR
55-300 mm Nikkor VR
150-500 mm Sigma OS
MeFoto Road Trip w/Q1 ballhead
Feisol CT3471 & Markins M20 ballhead
Visit my Nikonians gallery.
Visit my Nikonians gallery.
#7. "RE: Help with focus technique...." | In response to Reply # 6
I have posted small crops showing the issue:
I think you are right about the possible movements causing some blurriness.
I expected the flash to freeze any subject to camera distance changes and movements of the subject. I guess there was enough ambient light so the exposure took the full 1/60 sec as the flash was not the main source of light.
The lens is NIKKOR 35mm 1.8 so there is no VR and I did not use any support, it was hand held.
The next time I will try to shoot in manual mode 1/200sec at f2.8 (hand held) I think it should work.