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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 :)

Designed by Dan Sasaki, Zoom Lens

stevesherrick said:
The mounts have not caused me any issues yet in terms of backfocus. So far, they have been on after each swap. With the Birger mount you are removing the backfocus collar so I can't comment yet on how that will affect things. But in terms of Nikon mount, just do a backfocus check when you swap back and forth and make sure everything is still in alignment.
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What do you mean? Will the Birger route be less easy?
 
Swapping the mount is very simple (does take about 5 minutes). Have to be careful about protecting the sensor glass.

I stripped two screws doing the initial swap. Red replaced the hex screws with Torx. I don't tighten the screws enough to strip them (Nikon mount which is still hex at the moment), so I shouldn't have the stripping problem again, making the swap between mounts trouble free.

Backfocus wasn't an issue either.
 
They DO look nice, and Dan is the master.
That pair would be a superb replacement for my custom 28-90 Vivitar PL mount lens!
Cheers,
Harry
 
Hi to all the Red Lens Seekers :umm: who are looking for the golden goose lens set.
When you find it MP me Thank You:unsure:

I found the lens at Geofilms web site as others have posted.

http://www.geofilmgroup.com/shopexd.asp?id=69

I was hoping that some would no more about these lens as I new all would what to buy a set or two.:help:
 
MaxAMillion said:
what about the nikon 14-24; I shoot with this lens on my D3 and 14mm @ 2.8 mil was so sharp edge to edge. Kinda made the 17-35 look soft, If it wasn't a G lens I'd buy it today but I'm worried about how long till the Birger ships.
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Be careful with testing lenses on still cameras. I've been shooting still for a very long time (film and digital) and I have had some cheap glass that looked like crap on early model DSLRs. But with the processors and computing power in modern DSLRs like the D300 or the D3 I find that they correct optical flaws extremely well. I have several lenses with quite a bit of chromatic aberrations at wide and tele, but when used on a D300, they somehow come out perfect.

Just something to keep in mind when comparing still lenses to cine lenses.
 
Apparently nikon changed the optics and doesn't manufacture the elements any longer...so there's only one set of these zooms, and geo has them. Someone (geo or sasaki) did at one time plan on selling these.

Geo rocks for crashcams, alot cheaper than most, but they get the job done well.
 
We that settles that...we should phone up Sasaki and let him know there is probably enough of us here who want this lens to make it worth his while! Wishful thinking?
 
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