Canon T5 focus issue

xiomaran wrote:

I became an event photographer a couple months ago for a studio and purchased a Canon Rebel T5, I realize it's more of an entry level camera, but it's what I could afford at the time. I have recently noticed on my images that not all my subjects in the frame are staying in focus, i.e. having two subjects next to each other and one is in focus while the other is slightly blurred.

Is it indoors?

In that case it may be motion blur caused by the other individual. We need the EXIF data to see what it is

I mostly use my 18-55mm lens and occasionally my 75-300mm lens, but I am looking into purchase a new one. I shoot in manual mode and adjust my shutter speed, aperture, and ISO based on each venue.

Most advanced users use the aperture and shutter priority mode depending what we are shooting. It's just quicker and more reliable to let the camera do the metering while we take creative control.

Aperture priority gives us control over depth of field. We can change aperture quickly while the camera adjust shutterspeed to compensate. Shutter priority is mostly used for panning shots where you want a 1/100th ish shutter speed to keep the subject sharp but have enough motion in the background to give a sense of speed.

I personnaly adjust ISO manually i look at the shutterspeed the camera chooses and then adjust if it get's critical in terms of motion blur.

Other's including some pro's rely on auto ISO to that for them. AUTO ISO can be very well implemented in some camera's to terrible in others so mileage varies.

I have read several articles and tutorials on how to have sharper images and adjust the focus including the use of hyperfocus,

Just don't bother doing this. doing manual focus with the viewfinder of the T5 is gonna be close to impossible. It's just to small and dim to accurately do it.

Then your lenses don't have a hyperfocal scale. It's a technique for people that know what they're doing with a set-up designed for it. For you it's nice to understand the physics behind it for creative but not practical purposes.

but they have helped very little. Could this be a user error or my lens? Or are there setting adjustments I need to make to have my image more focused and sharper? Any advice helps.

If the 2 persons have the same distance from your camera they should both be in focus or neither of them.

You can increase your aperture or use a wider focal length to increase depth of field.

Don't try it with your 75-300mm though just put that lens on ebay for any given price. It's just no good at all for anything.