brand                           product name     focal length 35 mm efl and equivalent aperture max aperture
0  voigtlander    voigtlander nokton 17.5 mm f / 0.95          17.5 mm                     35 mm f / 1.9     f / 0.95
1  voigtlander      voigtlander nokton 25 mm f / 0.95            25 mm                     50 mm f / 1.9     f / 0.95
2  voigtlander    voigtlander nokton 42.5 mm f / 0.95          42.5 mm                     85 mm f / 1.9     f / 0.95
3    slr magic   slr magic hyperprime cine 12 mm t1.6            12 mm                     24 mm f / 3.2      f / 1.6
4    slr magic  slr magic hyperprime cine 25 mm t0.95            25 mm                     50 mm f / 1.9     f / 0.95
5    slr magic              slr magic 35 mm t f / 1.4            35 mm                     70 mm f / 2.8      f / 1.4
6    slr magic  slr magic hyperprime cine 35 mm t0.95            35 mm                     70 mm f / 1.9     f / 0.95
7    slr magic       slr magic hyperprime 50 mm f0.95            50 mm                    100 mm f / 1.9     f / 0.95
8      mitakon                    mitakon 35 mm f0.95            35 mm                     70 mm f / 1.9     f / 0.95
9       tokina     tokina reflex 300 mm f6.3 mf macro  300 mm f / 12.6                            600 mm      f / 6.3

Table as JSON:
{"brand":{"0":"voigtlander","1":"voigtlander","2":"voigtlander","3":"slr magic","4":"slr magic","5":"slr magic","6":"slr magic","7":"slr magic","8":"mitakon","9":"tokina"},"product name":{"0":"voigtlander nokton 17.5 mm f \/ 0.95","1":"voigtlander nokton 25 mm f \/ 0.95","2":"voigtlander nokton 42.5 mm f \/ 0.95","3":"slr magic hyperprime cine 12 mm t1.6","4":"slr magic hyperprime cine 25 mm t0.95","5":"slr magic 35 mm t f \/ 1.4","6":"slr magic hyperprime cine 35 mm t0.95","7":"slr magic hyperprime 50 mm f0.95","8":"mitakon 35 mm f0.95","9":"tokina reflex 300 mm f6.3 mf macro"},"focal length":{"0":"17.5 mm","1":"25 mm","2":"42.5 mm","3":"12 mm","4":"25 mm","5":"35 mm","6":"35 mm","7":"50 mm","8":"35 mm","9":"300 mm f \/ 12.6"},"35 mm efl and equivalent aperture":{"0":"35 mm f \/ 1.9","1":"50 mm f \/ 1.9","2":"85 mm f \/ 1.9","3":"24 mm f \/ 3.2","4":"50 mm f \/ 1.9","5":"70 mm f \/ 2.8","6":"70 mm f \/ 1.9","7":"100 mm f \/ 1.9","8":"70 mm f \/ 1.9","9":"600 mm"},"max aperture":{"0":"f \/ 0.95","1":"f \/ 0.95","2":"f \/ 0.95","3":"f \/ 1.6","4":"f \/ 0.95","5":"f \/ 1.4","6":"f \/ 0.95","7":"f \/ 0.95","8":"f \/ 0.95","9":"f \/ 6.3"}}