Three locations produce images that don't look like every other Holy Week photograph taken in Andalusia.
Arco de Elvira (Palm Sunday): The medieval arch as a foreground frame with the La Borriquilla float passing underneath. Afternoon light, family-friendly crowd, no flash restrictions in open street. A standard 35mm or phone camera handles this without difficulty.
Puente de los Mártires (Good Friday): The Río Genil as backdrop to the Cristo de la Expiración float. The water reflects candle glow in late afternoon. A telephoto helps compress the float against the river, but a phone camera at the bridge rail works.
Albaicín narrow streets (Holy Wednesday): Cobblestone lanes, whitewashed walls, and candlelight. The acoustic chamber created by the walls is part of the photograph in the sense that you want the viewer to feel the sound. Shoot at the bend in the lane, not the straight sections. Slow shutter speeds capture flame movement; a higher ISO handles the darkness.
For more photographic locations in Granada year-round, the Granada photography spots guide covers approaches and timing.