Medium format refers to the size of your roll of film (or if you’re talking digital, it’s the size of the camera sensor). It really just means that you are shooting on a bigger piece of film than you do with a 35mm camera. The increased size of medium format film means a much larger negative. This will give you finer details and less grain.
Twin Lens Reflex (TLRS)
TLRs use two objective lens of the same focal length. The photographic objective lens is the one that is used to take the picture. The other lens, called the view lens, is connected to the viewfinder. Most TLRs are fixed focal length, and the more expensive models may incorporate a rudimentary room function. Most TLRs use a leaf shutter system, resulting in high speeds, quiet operation and low shutter vibration. There are also close-up, wide angle and telephoto adapters for TLRs.
Some popular TLRS cameras are: Yashica MAT-124G, Rolleiflex 2.8F, Minolta Autocord and Mamiya C330
Rangefinder
Rangefinder cameras are medium format cameras with a range finder. This negates the waistline, viewing that most TLRs carry. They are also much smaller than TLRs, and allow for easier point and shoot photographs. They tend to have limited focusing ranges, and do not have lenses larger than 180mm or 200mm. Rangefinders are quieter and easier to focus in dim light. They are mostly fixed lens models, but higher range models also provide for interchangeability.
Some popular rangefinder cameras are: Fujica G690, Mamiya 6/7, Bronica RF645, Norita 66 and Pentax 67
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Nitecore USN1 for Sony NP-FW50
Input DC 5V 2A
Output voltage Slot 1 8.4V±1%
Slot 2 8.4V±1%Output current 1000mA (MAX)
Battery compatibility Sony camera battery NP-FW50
Compatible models Sony α5000, Sony α5100, Sony α6000, Sony α6300,
Sony α6500, Sony α7, Sony α7 Ⅱ, Sony α7R,
Sony α7R Ⅱ, Sony α7S, Sony α7S Ⅱ, Sony DSC-RX10 Ⅲ ,
Sony DSC-RX10, Sony DSC-RX10 Ⅱ, Sony DSC-RX10 IV, Sony ILCE-QX1,
Sony ILCE-QX1L, Sony α6100, Sony α6400
