Photographer Martin Boyce, 35, set up his camera thinking he was capturing the early moments of his fiancee Holly Dawson, 24, going into labour.
But they soon realised they were not going to get to hospital on time and called midwives at 3.30am on a Sunday morning.
They talked the cool-headed dad through the birth and Martin was able to single-handedly deliver little Belle in their lounge at 4.32am weighing 7lbs 12 oz.
Incredibly, the birth of the couple’s first child and the touching moment they cradled their newborn together was all caught on Martin’s camera.
Martin, from Thurmaston, Leics., said: “Its amazing that I’ve had such a big part to play in her life already.
“Rather than just holding Holly’s hand I was able to deliver my own child , which is just the most incredible feeling.
“It’s something I’ll be able to tell her when she grows up – and it’s all captured on camera as well.
“We had always wanted to film the birth and all the gear was in the car ready, but I had to get it out and I ran in and clamped the camera to the desk.
“I just had time to set it up and was able to capture the miracle moment of our baby being born.”
Holly, who works as a scientist for the Ministry of Defence, had gone to bed on the Saturday night but woke up in the early hours in pain.
She packed her overnight bag in anticipation she had started going into labour while part-time snapper Martin packed his camera bag.
They called their parents and Martin’s mum Polly, 60, who lives nearby, rushed round the house to offer her support.
But while she was there and on the phone to the midwives at Leicester General Hospital it soon became clear Belle was not going to wait.
Martin, who works in IT support for Leicester Fire Service, added: “I realised we were not going to get to hospital on time. Holly’s contractions were about 15 seconds apart.
“My mum who is an NHS nurse noticed she was in the later stages of labour so we got her on the lounge floor.
“I was comforting Holly while my mum was down the business end and then she told me the baby’s head was crowning – but I caught her in my hands.
“I was telling her ‘come on Holly, you can do it’ and within two big pushes Belle was out and in my arms.
“It was a bit scary as it was some time before Belle moved and cried, but it was fine.
“She was a little bit cold – her temperature was 35 degrees and it should have been 36 – and they tried to warm her up at home.
“They decided it would be better to go to hospital but she is back home now and doing well.
“I could not have done it without my mum and Holly’s mother Sharon has been amazing as well.
“I certainly won’t forget the birth of our first child.”