Photogenic locations might include your naturally tempting vista but I would encourage you not to overlook the smaller scale. In my estimation though, the finer landscapes take some getting to. Few roads lead much into the mountains and those that do are best attempted in 4x4s. If you are determined enough be prepared to wander some way by foot and be aware of the hazards of the bog.
For more easy to reach landscapes there is obviously the road side passes through Connemara. There I think of the Twelve Pins, Killary Harbour, Leenaun and the Erriff Falls. Slightly north of there, pull on to the side of the road at the southern end of Doo Lough with Mweelrea to the west and the Sheeffry Hills to the east. Here is the site of Ron Rosenstock's
Three Trees. From here follow the road into Louisburgh and then east to Croagh Patrick and Clew Bay. I think Clew Bay is best viewed from a vantage point, a tele lens and a well chosen viewing point in order to compact those islands into one frame. Try north of Westport Bay above the mud cliffs at a place called Roscahill on the way out to Kilmeena (OSI Discovery Sheet 31 L 935884) with views out to Collan More, a small harbour and an abandoned castle.
From Newport drive north to Furnace and Feeagh Loughs. Here you will have views towards the higher ground of the Nephin Beg range. You might drive until the road takes you to a youth hostel where you can pick up the Bangor Trail or Western Way (OSI Discovery Sheet 31 L 975055). A fair bit of forestry / timber works goes on here so you might have to be careful where to point your camera.
If you want an easy climb to a (windy) view try the road to Croaghmoyle (430m with aerial mast on top - hence the road) with views west to Lough Beltra and the Nephin Begs and north to Nephin itself and Glen Nephin.
There are then the lake massifs of Lough Conn and Lough Cullin. Pontoon's the place to stop and the Pontoon Hotel will provide you with fine scoff.
Think too of the North Atlantic coast. Most of the coast ends in abrupt cliffs but an angle can be gained at Belderg and best of all Downpatrick Head with the off shore sea stack of Dun Briste.
The smaller things I was thinking of were the grottos, shrines and holy wells. Plus a friary or two and the round towers. The wells are marked on maps but most lack structure. Not so the well at Rosserk. A covered well dating to the 17th century. Rosserk has a friary too and a place to park your car. You can jump the gate and potter about on the banks of the River Moy. In fact 10 minutes away there is Moyne Friary too. They are both within easy distance of Kilalla, itself a half hours drive from Downpatrick Head. They stand on the west bank of the River Moy and you will find yourself alone with the swifts to photograph cloisters and carvings.
Well that will have to do for now. If I don't get moving I'll be late for the pub. Have a great time.