The Canon PowerShot A100 is mostly gets compared to entry-level DSLRs. The Canon PowerShot A100's top rivals come from Nikon (such as the D7100)

compared toEntry-level DSLR competitors

Generally, some of the advantages of the Canon A100 compared to entry-level DSLR competitors include: it is much smaller (compact (110×58×37 mm) vs professional size (136×107×76 mm)), is significantly less expensive ($271.57 vs $708.89), is thinner (1.5" vs 3") and is much lighter (225 g vs 675 g).

However, on average it has a much smaller screen (1.5" vs 3.2"), takes much lower resolution photos (1.2 MP vs 24 MP), doesn't shoot as fast continuously (2.5 fps vs 6 fps), has a much smaller sensor (1/3.2" 4.54x3.42mm vs APS-C 23.5x15.6mm) and has a lower quality type of viewfinder (tunnel vs pentaprism).

Nikon D7100

Nikon D7100
11 years newer
$709 (body only)
$1,097 18-55mm lens

Significant advantages of the D7100 (vs the A100)

  • Much higher true resolution: 24 MP vs 1.2 MP
  • Much larger screen: 3.2" vs 1.5"
  • Has a through-the-lens viewfinder: Pentaprism vs Tunnel

Significant disadvantages of the D7100 (vs the A100)

  • Much larger: Professional size (136×107×76 mm) vs Compact (110×58×37 mm)
  • Much thicker: 3" vs 1.5"
  • Much heavier: 675 g vs 225 g

common strengths of the D7100 and A100

  • None found