We would like to take the opportunity to thank the photographic community and say that we sincerely appreciate all the warm and considerate support received since we started the project.

2-20-07

A Coupled Parallax camera having at least 4.times5. inches is now patented and in no way limited to the use of a Polaroid camera as a means to achieve such utility

With the introduction of perfect parallelism a few months ago the Coupled Parallax Rangefinder 4 times 5 camera project is now complete and the technical perfection yielded by the research can be mantained so that the camera will always perform as it did when you firts opened the box

We thank the owners and their enthusiasm which motivated us to research further, 7 years have passed since the research started and we have done what we could to overcome the barriers of old thoughts in the pursuit of the best possible tool for creative and utilitarian purposes.

To thank all owners for believing in the concept and then for fulfilling the commitment to learn the use of the camera which in turn yielded the wonderful images you went on to create with the L45s some of which we proudly display in our galleries.

The feedback on the L45s VI is the most positive yet and we look forward to continuing to provide innovation and make it available to the photographic community.

L45s VI

all previous models are discontinued

THE FIRST CAMERA IN HISTORY WITH PARALLELISM CORRECTION ADJUSTMENT

Able to ensure that front standard remains parallel to film plane a required pre requisite for rangefinder efficiency and to ensure focus is even throughout the film plane to avoid unwanted swings and shifts.

The 5 minute adjustment

The L45s parallelism issue has been tested thoroughly and here are the findings. making the Littman to be the first camera in history that can maintain accurate parallelism without needs for repairs 1) Setting up the front standard is a dedicated and involved effort on our part and require special tools to verify that the back and film plane are parallel within 50.000 of an inch tolerance. after which a linear measurement is determined.after that the user will never have to worry or require the use of complicated tools, expensive repairs or expect any downtime to his enjoyment of the camera. 2) in the event the struts would extend somewhat the owner user is provided with this 4 digit linear measurement i.e. 82.12 mm THE NUMERIC VALUE DISPLAYED IN THE PICTURE IS FOR DISPLAY PURPOSES ONLY and not the actual measurement which is information which belongs to the actual camera owner who ordered the unit . Each owner gets the numeric value inscribed in the camera interior and we keep it in our records. and all he has to do is take a digital caliper which costs 9.99 on eBay and open the jaws until this number is displayed in the dial and lock the thumbscrew (A). 3) using this caliper with the linear measurement locked by thumbscrew (A) the user measures the specified length. A) if there is a perfect fit the front standard is 100% parallel to the film plane and nothing is required. B) if the measurement locked into the caliper is smaller than the actual size in the struts all the user has to do is loosen the screws and allow the measurement to be contained by the tips MARKED IN THE PICTURE BY THE LETTER (B) of the caliper which act as if fingers/ tighten the screws with the caliper in place and repeat the operation on the other side. C) the whole operation takes less than 5 minutes and the error expected is less than 50.000 of an inch. D) you may be able to do this faster but even if it would take 1/2 hr a a couple of times in a lifetime it is absolutely effortless/ foolproof and 100% accurate. E) The flip side of this is that arms which do not have this protected improvement act in the following manner; when you bend one side to achieve proper length the other side is affected as well and this yo-yo effect compounded with the spring like response to bending metal results in inadequate and imperfect parallelism and the more you mess with it the worse it gets. creating this method for the users maintenance of the 100% parallelism required for the rangefinder to remain at Littman standards throughout time took a few weeks over the holidays and all pending cameras were required to be tested simultaneously and we report the following finding; Once the arms were identical in length while the front standard was parallel to the film plane we determined that all 30 cameras currently tested were absolutely parallel with the arms being at identical and symmetrical lengths and as explained in a previous discussion the tool we use to measure parallelism is caliper like and if you lock it and you use it to measure distance between back and lens board and both sides are identical while perfectly square then any previous considerations pertaining to the L45s being a " brickolage/ conversion / based on old cameras is fully dismissed as the final assembly exceeds the parallelism performance and accuracy of anything else out there.otherwise a camera is camera obscura/ nothing but a box / enclosure and what counts are the precision/ internal/ external mechanisms which go to make it easier to use and more responsive. The pictures posted here are taken with a cannon digital. I don't have the time or funds to allocate to using 4x5 for such purposes nor feel there is a need for better pictures. We have not yet been able to allocate the time to introduce the L45s VI on our website nor update it as a result of these threads. We would gladly perform this adjustment for those owners who do not wish to bother with tech issues like that and the turnaround would be 1 day . the cost negligible and the conventional repairs require infinity adjustment and or/rf recalibrations and or cam adjustment / time consuming unreliable and expensive.

L45s VI 5 MINUTE 100% PARALLELISM CORRECTION ADJUSTMENT


L45s Graflock Parallelism Verifier

I Conceived a device that would allow verification of the front standard parallelism as if it was actually resting on the camera back the section that attaches to the back is precision grinded as if a film holder with graflock side fastening and the arms go around the side and enable to check the parallelism of the front standard while focusing the camera the lens board is expected to make contact with the verifying device on all sides simultaneously and when this is achieved the front standard is verified to be 100% parallel to the film plane.

The L45s was declared the most responsive Large Format camera in 2002
Now it can be verified to be the most precise and ensure it remains that way thru time

All L45s owners of previous models can now upgrade their cameras to a L45s VI

We wish you may enjoy the LF season and that you may get the cameras out of the closets. Dust them off and have some fun.

This page will be updated soon

Our products are protected by the following:

US patent

7,181,135

6,873,794.

6,778,772

6,608,971

and Design Patent pending and Foreign patents pending

the terms of this protection are specified by the link below:

http://www.littman45single.com/05ccmc/patentcover.jpg

 

Induced Infringement

the statute that governs induced infringement is 35 U.S.C. §271(b), which states:  "Whoever actively induces infringement of a patent shall be liable as an infringer."