Edit: Sorry for the lenght, didn't realize I made such a long post after I hit the submit button! And forgive any typo, English is not my main language
I must admit I learned a lot with the tutorials on this page, and reading them acted as some sort of catalyst to buy my first digital SLR. That happened a couple of years ago and by reading here along with playing with the camera enabled me to take some shots I never thought I would be able to get. So, kudos to the people that make this site and keep the good work!
Regarding the purpose of this thread, this last sunday I had my cousin's baptism. I am used to take pictures for my family and/or friends, non-professional pictures but perhaps above average pics. But this time I couldn't get a decent shot.
I was reading this thread and I could understand the problem. But in my case, I needed a neat DoF throughout the width of the picture rather than a background-foreground case.
I have uploaded the picture I speak about here.
There you can see that the guys standing on the far left and the far right are not as sharp as the people in the center. I estimate I was 10 meters away from the group. I estimate that the distance from the baby in the middle to the teenager right above the baby (but in the background) is around 3 meters, and I have no idea what could the distance be between the guys on both sides.
I am happy with the sharpness I got in the center of the picture (notice the palm tree reflected in the glass of the door behind all the people. That door could easily be 5 meters further away, adding a total of 8 meters, probably 10mts from the baby to that door.). But I am really disappointed about the sharpness I got on the sides of the shot
In this case, the distance from camera to baby, compared to the distance from camera to either guy on the side, is almost the same. Why would I lose so much sharpness if the difference in the distances I speak about is negligible?
In other words, background to foreground: I get decent sharpness in like 10 meters. Left to Right, I lost half my sharpness in like 6 meters?
Technical stuff that may help you help me:
Consider this is a Jpeg for uploading purposes. The original is a RAW file, resolution of 4272*2848 and RAW file is brighter than this JPG (had to tune the brightness a bit).
I own a Canon 450D, this shot was taken at f3,5 1/80s ISO 100 on a 28/80 Tamron lens @ 28mm. I also used a flash that acted as a filler since baby's mom wanted the pic to be taken like that. The sun was in front of me, but the church casted that sort of shade...
Thanks in advance!