The optical design of the converter lens is comprised of 5 elements in 4 groups and when on the 28mm lens
DSLR Compatibility The ACH4-25MON is compatible with DSLR cameras that feature a 1/8" unbalanced mic level input including:
Gain 0dB to 22dB +/- 1dB Frequency Response 5Hz to 80kHz Input Impedance Aux Input: Unbalanced 10k ohms
black plastic end panels
BOURNS SRP1238A-2R2M Power Inductor (SMD), 2.2 µH, 16 A, 29 A, SRP1238A Series, 13.5mm x 12.5mm x 3.3mm, Shielded American DJ POCKET SCAN PAK The optical design of theThis is a Power Inductor (SMD), 2. 2 H, 16 A, 29 A, SRP1238A Series, 13. 5mm x 12. 5mm x 3. 3mm, Shielded product from BOURNS with the model number SRP1238A 2R2MProduct details Inductance 2. 2H RMS Current (Irms) 16A Saturation Current (Isat) 29A Product Range SRP1238A Series Power Inductor Case 13. 5mm x 12. 5mm x 3. 3mm Inductor Construction Shielded DC Resistance Max 0. 008ohm Inductance Tolerance 20% Packaging Cut Tape Other details Brand BOURNS