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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

what do you guys mean when you say 107's? does that mean the november reservation holders?
 
Martin Weiss said:
Great to hear.

If I order a mount today(ish), when do you think it will be delivered?
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Probably, not too much far from the early adaptors.
 
Adam Levins said:
Really?

I thought that breathing thing was a separate issue of fixing the slight zooming that you get when you pull focus.

So you are saying this same principle will hold the focus when I pull a long zoom?
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The slight zooming you get when pulling focus IS breathing - that's what breathing is. The idea with the Birger mount is that as it knows what lens you have mounted it can intelligently apply a bit of zoom in the opposite direction to cancel it out.

Of course all this is completely theoretical since when Birger says something is going to happen 'next week' the problem is we don't know which year he is referring to.
 
I seem to remember speculation about this but I don't remember ever reading how the Birger mount would control a manual zoom. I know that ViewFactor is working on this and that Birger was working on having the camera enabled to have some kind of autofocus.
 
geoff tompkinson said:
Of course all this is completely theoretical since when Birger says something is going to happen 'next week' the problem is we don't know which year he is referring to.
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post of the season.. the whole season..
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birger's season.. no season at all.. only usual vapor anyway..
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geoff tompkinson said:
The slight zooming you get when pulling focus IS breathing - that's what breathing is. The idea with the Birger mount is that as it knows what lens you have mounted it can intelligently apply a bit of zoom in the opposite direction to cancel it out.

Of course all this is completely theoretical since when Birger says something is going to happen 'next week' the problem is we don't know which year he is referring to.
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Sorry I realize that I have not been very clear in the wording of my question.

I will try again :innocent:

On of the biggest problems with still 's zoom lenses is that they do not hold focus. For example you zoom in and focus on something and then zoom back out. On a Still' lens the focus plane changes and you lose focus on the item you zoomed in to focus on.

This I believe is a different issue to lens breathing

Would the Birger be able to compensate for this shift in the focus plane by making focusing readjustments as you zoom in and out?
 
Hi Adam,

Sadly, this thread is so vast it's impossible to find specific sub threads. I think I vaguely remember this coming up before. The tendency for zoom lenses to lose focus when zooming out is call tracking. It is a feature of both still and cine lenses but usually indicates wear when a cine lens displays this tendency. Maybe it's the optimist in me but I think someone was making the claim for Canon EF lenses track perfectly - anyone..
 
From what i've gathered they are all crap at zooming. As most of us are not interested in filming whilst zooming it's no big deal but sooner or later the option would be good to expand storytelling capabilities. Kubrik loves zooming in a shot and he has made it work. Personally i think a cut is more aligned to human perception. Tarantino did it well in the drug scene in pulp but then again he used all kinds of odd things in that film and it worked well. Felt like a scene out of days of our lives. I gather it's would be a good trick also for getting quick focus if it was calibrated well. However, and i' sure many will agree, We are not about to suggest any new features on the current Birger release.
 
Ha ha, no kidding. Finner's suggestion for the knob has apparently added more than a month's wait to the mount, and it still won't ship with a knob yet. We better not talk about any other features if we want this thing by Christmas '09.
 
Kenn Christenson said:
So... what's the word, today?
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All orders are in the system (we think), and all cancellation requests processed/refunded. We are double checking in alphabetical order for missing orders, and all change requests. We are on the letter "G". Amy is out on tuesday. She thinks this phase will complete on wednesday, and the sales order confirmations will all go out that day.

On thursday we should start emailing the first 100 with requests to settle account and short ship dates. Production ramp will start friday, which includes enough units to close out all existing Canon orders.

Knobs are still on hold, as I am not yet happy with the adjustable tension. I think we will have that resolved and start shipping before the end of the month.

PC collimation application is basically finished, and will demonstrate just how smooth any given lens will work.

The last delay was due to the fact that the camera just does not give enough power for some lenses that people might want to use. We are providing facility to power the mount externally from the camera, but will not start to offer that cable until a later date. Most lenses don;t need this. Some of the Sigmas do.
 
Great news Erik.

One question:

What about to use Tokina 11-16mm f/2.8 AT-X 116 Pro DX Autofocus Lens for Canon EOS Digital?

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For example Ken Rockwell wrote this:

"Having compared it directly to my Nikkor 12-24mm f/4 AF-S DX,
it's obvious to me that this Tokina 11-16mm f/2.8 is better than my Nikkor.

This Tokina 11-16mm is the world's fastest and sharpest ultrawide lens
for small format digital cameras (Nikon DX and Canon 1.6x).
Considering its bargain price of under $600, its the world's best ultrawide lens for digital SLRs.

It is very well made. Its distortion is much easier to correct than the Nikkor's."

LINK>>>
 
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