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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Birger Lens Mount Reservations

birgerEngineer said:
I am sure there is a kind soul out there that will talk you through it. Maybe someone wants to start a new collimation thread.
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Anybody need help with collimation feel free to send me an email or pm. It is not that difficult at all, just takes a little bit of time but makes all the difference in image quality.
 
LEON said:
ok,
you leave me no choice but

1-Red is not good example, they "upgraded" so nicely my camera and now there is dust on the sensor, they say it could happen during the shipping
and the camera has now to travel back from France to California (more shipping !)

2- Red is a good example: they pay for the shipping: Fedex took it on Friday, it came back on following Wednesday.


Anyway, good luck with your work, I love this mount so I can forgive a lot!

Best to Amy and you

jean-Luc LEON
Click to expand...

Let me just say something about "free" shipping. RED has much more profit to work with to cover that shipping. It works this way. RED and Birger and most manufacturers work on pretty much the same cost to price/profit ratio. So just for easy numbers sake let's say that is 50%. So RED made gross profit of $8750 on the $17500 sale and if shipping is $400 plus another $100 or so in internal labor costs for handling (unboxing, tagging, invoicing, packing list, reboxing, etc. leaving $8250 profit, which is still a pretty healthy number. Whereas Birger would have $650 on a $1295 sale to work with and shipping would be maybe $80 plus the same $100 handling costs drops it down to $470. In business sometimes it is percentages that you look after, sometimes it's just the actual number that counts.


Further, RED is probably able to negotiate a much more favorable deal with FEDEX because some of the same principles apply: the paperwork, accounting, pickup and drop off costs pretty much the same whether it is a letter or a 50 pound box so every shipment has two component: the basic handling cost and then the cost of fuel and plane space that occurs with different packages.

Since Birger fits in an envelope and only weighs a pound or two and he is only talking a hundred or so mounts there isn't much room for fedex to heavily discount the price.

Whereas RED can be making a deal based on saying we can guarantee we are going to ship 300 or so 40lb. packages - make us a special deal or we will take it over to UPS. And FEDEX has lots of room to move because their actual cost of the difference between that fairly compact 40 lb box and a 2 pound letter is nowhere near the couple dollars a pound they normally charge.
 
Lauri Kettunen said:
Anybody need help with collimation feel free to send me an email or pm. It is not that difficult at all, just takes a little bit of time but makes all the difference in image quality.
Click to expand...

Hi Lauri, Don't want to put you in the spot, but maybe it is a good time to make a sticky new thread with your former collimation post. And there, we could also put the future link for Jays video and the Software release upgrades and other news about lens collimation and so.

This thread has gone way out of "searchability".

And this way you might avoid a bunch of emails or PMs asking for the same thing. And in case any lost soul ask the same question, we just direct them to that thread. :help:
 
nudelaug said:
got this running, thanks for your advice guys! birger rocks. BUT: some canon primes are shaking inside even when beeing focused with the AF motor, do you have better experience with L-Lenses?(mount collimated, works great. Thanks!)
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The BlueTooth stack on the MAC sucks... when using the SPP profile for real time 40Hz+ update rates in a servo system. There is some weird packetization going on, that effects the focus. Also, there is a gear train in the 50mm/1.4, so a some amount of what you are seeing is contributed by the lens. This is smoother on the PC and the Impero. Most of it is the BlueTooth stack issue.

For those that need to pull super smooth focus frome the MAC, we will offer a cable, and possibly a special radio.
 
birgerEngineer said:
The BlueTooth stack on the MAC sucks... when using the SPP profile for real time 40Hz+ update rates in a servo system. There is some weird packetization going on, that effects the focus. Also, there is a gear train in the 50mm/1.4, so a some amount of what you are seeing is contributed by the lens. This is smoother on the PC and the Impero. Most of it is the BlueTooth stack issue.

For those that need to pull super smooth focus frome the MAC, we will offer a cable, and possibly a special radio.
Click to expand...

How close are we to a cable?

What about Parrallels on a mac book pro. Do you think it will have the same issue?
 
Thom Steinhoff said:
How close are we to a cable?

What about Parrallels on a mac book pro. Do you think it will have the same issue?
Click to expand...

Ken does all of his development on a MAC under Parallels. That way he can do all the firmware for the mounts as if it was a PC, and test and develop both the PC and MAC applications - all on the same MacBook Pro. Unforunately same problem, same stack.

Will address the cable issue in a couple of days.
 
birgerEngineer said:
Ken does all of his development on a MAC under Parallels. That way he can do all the firmware for the mounts as if it was a PC, and test and develop both the PC and MAC applications - all on the same MacBook Pro. Unforunately same problem, same stack.
Click to expand...

I was incorrect. According to Ken:
You left a note on the boards that wasn't entirely accurate. The OS contains the Bluetooth stack and controls the packetization. So if the Mac's Bluetooth hardware is attached to the Windows OS through Parallels and the PC app is used, then the focus is actually smoother than using the Mac app with the Mac's Bluetooth hardware. This is how we are able to tell that it's the Mac's packetization that is an issue, as the same exact hardware works better if Windows is controlling it. Amazingly Microsoft did something better than Apple.​
 
BIRGER + ET EVF Mount = dirty solution / S4i

BIRGER + ET EVF Mount = dirty solution / S4i

hey,

does somebody know a better solution for having a birger mount with antenna attached and using the element technica evf mount in the same time? i am using a short riser for that but not very happy with it. see pictures on 536.

maybe an extended antenna on a cable will do?

best

nudelaug

added: HOLY CRAP! I was always asking myself why Birger didn't translate the Canon Lens ID into the Cooke S4i system...i watched the photos i made on page 534 and realized the beige part on the board, -> instantly remounted birger on my cam and now YOU GET: the LENSDATA: DISTANCE and TSTOP on the LCD!

BUT: the t-stop works correcty, the focal length of the lens is not shown, only "prime" and i couldn't get the distance display get to work...it only changes the value when used withthe bluetooth software from my mac, but it doesn't match the focus scale (yet)....sure eric will work on it when other priorities are finished. so far for the first try.
---
anybody tested 'wobbling'-causa on L-primes?
 
birgerEngineer said:
I was incorrect. According to Ken:
You left a note on the boards that wasn't entirely accurate. The OS contains the Bluetooth stack and controls the packetization. So if the Mac's Bluetooth hardware is attached to the Windows OS through Parallels and the PC app is used, then the focus is actually smoother than using the Mac app with the Mac's Bluetooth hardware. This is how we are able to tell that it's the Mac's packetization that is an issue, as the same exact hardware works better if Windows is controlling it. Amazingly Microsoft did something better than Apple.​
Click to expand...
I'll take what good news I can get from this thread... this seems to be it for this month!
Will make my dual-boot Macbook Pro more useable when.........if................
thanks for the clarification, Erik.
 
Kyle Mallory said:
Daniel, Rndm... I haven't seen my shipping info yet either. I'm trusting I'll be in the group on Monday. If not... Erik, you can expect a call from me tomorrow evening. :-)
Click to expand...

i haven't gotten anything. and i'm one of those who got confirmation, etc. from amy that i'm on the list as a partial shipment. and i'm probably close to being right after you, kyle. so i know i should be on this list. monday then. for sure. right, eric?
 
nudelaug said:
-> instantly unmounted birger from my cam and now YOU GET: the LENSDATA: DISTANCE and TSTOP on the LCD!
Click to expand...

What do you mean here?

Nevertheless, to get the lens data on screen it seems one has to first switch the lens data on for the LCD and then also toggle the S4i box off and on in the menus. Found this after spent an hour trying to figure out why the lens data disappeared once upgraded to build 18.
 
There is a minor issue with the locking pin assembly on almost every lens mount that we built over the last few days. I did not catch it until final inspection. We are fixing the problem in house. Very few shipments go out today. We will be caught up by end of day on tuesday. Our machine shop has made over 1,500 sets of these parts over the past few years...:ranting2: and... it would be nice if everybody here did not expand the scope of my frustration until fedex picks up on tuesday. :wink:
 
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