My challenge is focus. Currently using Canon 50mm f/1.8 lens... Even if I step back, 2 or more people are not all in focus... Even with one, often I step away yet shooting the half or full body, eyes are out of focus.
This sounds like it could be a combination of couple of problems.
Just like Derrel has said above. Getting peoples faces as close to the same distance from the camera will greatly improve your chances for them all to be in focus.
The second part can also be broken down in two parts.
First is your camera settings. Ensuring your focus mode is in one shot and not AI servo. One shot will try until it has achieved focus then it will stop. AI servo will keep trying to achieve focus until the shutter is fired.
Second is technique. You want to ensure the focus is on the eye. There are again two ways to do this. Use the centre focus point, focus on the eye and then recompose. Or adjust the focus point to be on the eye with the desired composition. I personally use centre and recompose.
Practicing this with stationary object such as a mannequin head or doll will ensure any missed focus is user error and not model movement.
Thank you. Yes, it is set on One Shot.... Yes, today I did an outdoor photoshoot, and it went well, but I lost some great photos due to focus issue. I did try to recompose, yet, not always successful... I know practice will make it better... But the focus problem keeps persisting.
Also, if my 2 subjects cannot be too close (like head to head), what else can I do to make sure they won't be out of focus. Should I not use my Canon 50mm f/1.8 when shooting 2 subjects? Instead use general Canon 18-55? Thank you!
Let me sum a few things up that have been said to help you better understand what is going on.
Your "problem" is probably called shallow depth of field or shallow depth of focus. The lower your f-stop number is, the shallower the area of focus in your image.
Some people us it to their advantage in portrait photography to have the person(s) sharp and the background as blurred as possible (using f-stops around f1.8 and on other lenses even f1.2). But the chance to miss a shot is there, even if you are very experienced. That´s one of the reasons why professionals usually take more than one shot to make sure to get at least one image that is well focussed.
If you use higher numbers (photographers call that to stop down), the area of focus will become bigger, the background and the people become sharper.
If you still want to use f1.8, you have to place all the faces (actually all the eyes) of your group within the same distance to your camera. Putting them close together as mentioned needs a little more explanation I think. If you have them close together behind one another some would still be out of focus, even if their heads touch.
View attachment 146405
I hope that graphic doesn´t confuse you more than it helps. you don´t have to place the people in a circle. They just need to be within the same distance to your camera.
The focus will be more shallow
- The smaller your f-number
- The longer your focal length
- The closer you are to your subject
There is one more thing though that could get you into troubles. Some lenses have focus issues - front focus or back focus. If you feel like you have done everything right and the eyes (especially when you photograph just one person) are still out of focus, then you could have such a lens. In this case a few cameras have adjustments in their menus, others don´t. If you have one of the latter you have to let it check.
But don´t consider doing that before you are not absolutely sure you´ve got everything else right.