Some thoughts about mirrorless cameras and their batteries.Mirrorless cameras lack some of the key components and mechanisms that are inherent in digital SLR cameras. These components and mechanisms consume a lot of energy and, theoretically, a mirrorless camera on a single battery charge can take more shots than a DSLR camera. Specifically for mirrorless cameras:
- No mirror control mechanism (no need to lower and raise a pair of two mirrors)
- No separate exposure meter (separate sensor in the area of pentaprism or pentamirror)
- No separate focusing module (separate sensor under the main mirror)
- There is no aperture control mechanism (critical for some SLR systems, for example: Nikon F, Pentax K, Sony / Konica-Minolta). In older Nikon DSLRs, this is one of the main consumers of battery power.
- No backlight LCD display with more information in JVI
- There is no electrical body kit for all these mechanisms, on which power losses occur
True, in mirrorless cameras:
- Maybe EVI (which can be turned off or toggled the display on the main display)
A feature of mirrorless cameras is the always-on matrix (sensor) of the camera, which creates the main problem of quickly discharging the battery. In addition to the fact that the mirrorless matrix itself is constantly working, the processor is constantly working, which debayering images and the formation of a preview image for EVI and / or a display with multiple enhancement settings.
Roughly speaking, mirrorless cameras have fewer mechanical power consumers: mechanical shutter, aperture control mechanism, lens image stabilizer / camera image stabilizer, autofocus drive, and automatic zoom drive for some lenses.
If you shoot a lot and constantly (intensively), then the number of frames per battery charge from mirrorless cameras may not be inferior to similar SLR cameras.
Example: Sony Alpha ILCE-3500 on one charge of the original battery with a small capacity SONY NP-FW50 Li-ion 7.2V 1080mAh with intensive shooting of reportage with an autofocus lens Carl Zeiss Sonnar E 1,8 / 24 ZA T * (Sony SEL24F18Z) easily takes more than 3000 frames. The same goes for, for example, the Sony A7M3 and many other cameras. Actually, it was this circumstance that served as the impetus for the creation of this short note.
The number of frames (shutter releases) is not the most objective parameter by which to judge the lifespan of a mirrorless camera on a single battery. For mirrorless cameras, it is still better to indicate the time when the EVI and / or main display or maximum video recording time.
Personally, I don't bother with the problem of mirrorless camera batteries at all. This is not what a photographer should be thinking about. I always have extra batteries or spare cameras in stock. I am not even embarrassed by the extra 4-5 batteries in the backpack on some long hike. If you love photography, love to carry photographic equipment. For work, almost any mirrorless camera is enough for classic photo shoots from 1 to 3 hours or other everyday tasks of the photographer.
Write your records for the number of frames per charge for DSLRs and / or mirrorless cameras in the comments.
Materials on the topic
- Full-frame mirrorless systems. List of all cameras and lenses to them. Mirrorless fever, discussion, choice and more
- All cropped mirrorless cameras, discussion of systems
- Mirrorless crop that has stopped or is stopping its development
- Fallen Digital Mirror Systems
- JVI or EVI
- About mirrorless batteries
- Simple and clear medium format
- Smartphone Impact
- All announcements and news
- What's next?
Comments here on the site do not require any registration. In the comments, you can ask a question on the topic, or leave your feedback, or describe your experience. For the selection of photographic equipment, I recommend E-Catalog. Many little things for the photo can be found on AliExpress.