Character going out of camera frame

[TheWhat603]

Pretty bad code, ill fix it later, but why does the player go out of view instead of the camera following the player fully from behind, all i want the :Lerp() for is to get the midpoint and look at the midpoint

local plr = game:GetService("Players").LocalPlayer
local char = plr.Character or plr.CharacterAdded:Wait()
local hum = char:FindFirstChildOfClass("Humanoid")
local humRP = hum.RootPart

--local otherHP = plr.PlayerGui.OtherHPBarGui
--otherHPFrame = otherHP.HealthbarFrame.HealthBar

local uis = game:GetService("UserInputService")

hum:SetAttribute("Locked", true)

local function getTarget(input: InputObject, gameProcessedEvent: boolean)
	if gameProcessedEvent then return end

	if input.UserInputType == Enum.UserInputType.MouseButton3 then
		local camera = workspace.CurrentCamera
		local cameraCF = camera.CFrame

		local camDefPos = cameraCF

		local length = 66.6667

		local raycastParams = RaycastParams.new()
		raycastParams.FilterDescendantsInstances = {char}
		raycastParams.FilterType = Enum.RaycastFilterType.Exclude
		raycastParams.IgnoreWater = true

		local cameraCF = camera.CFrame
		local raycastResult = workspace:Raycast(cameraCF.Position, cameraCF.LookVector * length, raycastParams)

		if raycastResult.Instance.Parent:IsA("Model") then
			if raycastResult.Instance.Parent:FindFirstChildOfClass("Humanoid") then
				local Target = {
					["Head"] = raycastResult.Instance.Parent.Head,
					["Model"] = raycastResult.Instance.Parent,
					["Hum"] =  raycastResult.Instance.Parent:FindFirstChildOfClass("Humanoid"),
					["RootPart"] =  raycastResult.Instance.Parent:FindFirstChildOfClass("Humanoid").RootPart,
				}

				if hum:GetAttribute("Locked", true) then
					local mouse = game:GetService("Players").LocalPlayer:GetMouse()

					--otherHP.Enabled = true
					local function LockOn()
						humRP.CFrame = CFrame.new(humRP.Position,Vector3.new(Target.Model.Position.X, humRP.Position.Y, Target.Model.Position.Z))
						camera.CFrame = CFrame.new((humRP.Position + Vector3.new(0, 3, 10)),humRP.Position:Lerp(Target.Head.Position, 0.5))
						local health = Target.Hum.Health
						local f = health/100
						--otherHP.Adornee = Target
						--otherHPFrame:TweenSize(UDim2.new(f,0,1,0),"Out","Quad",0.25)
					end
					game:GetService("RunService"):BindToRenderStep("LockOn", Enum.RenderPriority.Camera.Value + 1, LockOn)
					repeat
						task.wait()
						camera.CameraType = Enum.CameraType.Scriptable
					until
					camera.CameraType == Enum.CameraType.Scriptable
					hum:SetAttribute("Locked", false)
					print("alpha")
				elseif hum:GetAttribute("Locked") == false or hum.Died or Target.Hum.Died then
					--ill do this later
					hum:SetAttribute("Locked", true)
				end
			else
				print("nah")
			end
		end
	end
end

uis.InputEnded:Connect(function(input: InputObject, gameProcessedEvent: boolean) 
	getTarget(input, gameProcessedEvent)
end)

[TheWhat603]

fixed, i used + instead of * on line 43