The "4x5 (5x4) Inch Digital Back".
Status April 2021: Coming soon--Video of LS45 operation and demos! The LS45 Monochrome to be sold first. Color filters are done. Waiting on dicing and packaging. We should have sample photos in a few months.
Lenses with an image circle of 200mm should work fine. The sensor is a bit larger than a 4x5 film. Treat it like a monochrome film camera, with nearly unlimited film, and with the possibility to change the film type after shooting.
People like to reminisce about medium format, fat pixel digital backs. Fat pixels are sharp, have great tones and range. The LS45 pixels are beyond fat, they are humongous. Diffraction is not much of a worry with big pixels.
Join the list to purchase and/or demo!
LS45: Expected USA price monochrome US$26,000
Color price: Decided after we find the yield
New lower price to be listed soon.
Excellent support for near IR and near UV, since there is no blocking filter fixed in the camera. Filters should be changed in a clean and dry environment.
Color or Monochrome
Graflok mounting back or Custom mounting back
AC only Bases:
LS45-BASE-BAP-01 AC only Base, lightweight case
LS45-BASE-BAS-01 AC only Base, strong extruded case
AC and battery lower-powered Bases, slower processing than the full AC models:
LS45-BASE-BBP-01 AC and battery Base, lightweight case
LS45-BASE-BBS-01 AC and battery Base, strong extruded case
Control of the camera is done through an HTML interface. PCs, tablets, and phones may connect to the camera's WiFi connection. A guest account allows users with a PIN to browse and download images on the camera. A wired Ethernet connection may also be used for camera control and image sharing.
LargeSense cameras can import your PhotoShop actions and apply your curves to the linear images the camera takes. These are applied to the JPEG images saved, and shown as preview images, as well as being embedded in the raw DNG images.
You can set the electronic shutter with fractional, ms, or seconds.
Storing all of the actual files used in an image in a ZIP file:
Unmodified 14-bit sensor readout saved in 16-bit files
Fixed Pattern Noise
FFC flat field correction
Dark noise file
Curve applied to the linear file
The processed JPEG, DNG, and TIFF of image
An LSR1 client program will allow further processing of the images.
LargeSense will keep updating the interface software for all models of cameras. An abstraction from the hardware allows quick updating of the functions and user interface.
4x5 film is near 4x5 inch, but smaller. In addition, it is held around the edges so there is less of an active area. The LS45 digital sensor is a bit larger than 4x5 inches.
We have ordered a new Svedovsky 5x7 camera. It will fit the LS45 perfectly, and be smaller and lighter than the 8x10.
Svedovsky.com Svedovsky 8×10D, 5x7 and 5x7E will be fully compatible with a custom mounting plate. It should be ready by the time the camera launches. The cameras are affordable, solid, and good looking. The camera will have a custom modification by Svedovsky to handle the additional weight of the digital sensor compared to film.
Bag bellows for wide angle on the Svedovsky 8×10W
Many people have expressed strong interest in mounting the LS45 on their own 4x5 camera. There are issues with it, such as possible cropping of the sensor, weight, and infinity focusing. However, we'll give it a try. Most likely a back for the camera, such as a film back, would be needed to construct a mount from.
Here are the cameras that have been requested:
Cameras where mounting is not possible:
You may join our LS45 Interest List and our mailing list, and we will update you when we're ready for taking orders. For those who wish to demo the camera, we will offer those by appointment in Santa Clara, CA, USA.
To reduce weight on the rear of cameras, the digital back is in two pieces, with power supplies and processing done in the Base.
LS45-GB-C Color 4x5-inch digital back, Bayer CFA, for 4x5 camera mounting on a Graflok Back
LS45-GB-M Monochrome 4x5-inch digital back, for 4x5 camera mounting on a Graflok Back
Each back needs to be used with a base:
LS45-BBA Battery/AC base for LS45, power saving. Gold Mount batteries. 2h+ usage.
LS45-BAC AC base for LS45. Faster than the battery version.
C - color (standard Bayer CFA)
M - monochrome
The LS45 might work well with UV-A. There are a few images with large enough image circles for the LS45.
Some lenses which might work with UV photography:
Nikon EL-Nikkor 135mm f/5.6 lens. Image circle should just fit the LS45.
Charles Beseler Company East Orange N.J. 18" E. F. series 3 Big image circle
UV Pass Filters recommended:
Hoya U-340 plus an E-CM500S
The BW403 filter is said to let in some IR light.
With enough demand, we may offer a version that goes deeper into UV and IR. UV cutoff is currently near 320 nm. Please inquire. Availability late 2018 to 2019.
Active cooling at a cost of more power consumption. This may benefit astronomy uses, though the sensor area may be too large for most telescopes and long exposures will be limited. Short exposures with a high base ISO will have low noise.
Some features which may benefit astronomy applications:
The Sensor Glass can be configured for different situations.
The standard glass:
The glass can be changed by the user, but care is needed. The sensor will have no cover glass, so a table-top clean room is recommended. The sensor will have an air gap before the glass.
The LS45 AC Base uses international AC power. For outside use, you will need pure sine wave portable power. For people in the USA, there is the Paul C Buff Vagabond Mini™ Lithium. Paul C Buff is a company that sells great products at good prices and supports customers well.
The LS45 grounds the chassis for safety. Use appropriate caution outdoors with portable power. The Vagabond Mini™ Lithium is made to work only in dry environments. Check the inverter manufacturer's information about grounding and outdoor safety. Don't use any other equipment with the same inverter as the camera.
Sensor size is an important component of image quality. It brings out the "magical 3D quality" in images, and better tones.
LargeSense cameras have large pixels also.
|iPhone X||1.4 micron|
|FujiFilm GFX 50S||5.3 micron|
|Hasselblad X1d-50c||5.3 micron|
|LargeSense LS45||50 micron|
|LargeSense LS911||75 micron|
The LS45 and Svedovsky 8x10D camera, along with accessories will fit into a large backpack, making it a portable large format digital solution.
A special thanks to DIC Corporation for providing adhesive seal for the LS45. It is used as a dust and light blocking materal in sections for the camera.