The number of actuations a DSLR has depends on the make and model. For example I use a Canon 30D, this model is rated for over 100,000 actuations before you would even look at replacing the assembly.
Most people will never use up their actuations, they would probably replace things before that ever happened. You know how we all like our toys.
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Setup: 180G DT, 105G Refuge (approx. 300lbs LR, 150lbs Aragonite)
Hardware: Super Reef Octopus SSS-3000, Tunze ATO, Mag 18 return, 2x MP40W, 2X Koralia 4's Wavemaker
Lighting: 5ft Hamilton Belize Sun (2x250W MH, 2X80W T5HO)
Type of Aquarium: mixed reef (SPS & LPS) with fish
Dosing: Mg, Ca, Alk
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