Bastubacka

Bastubacka

Joined on Feb 8, 2012

Comments

Total: 4, showing: 1 – 4
In reply to:

RDMPhotos: Its funny .. I have been talking about this type of optical converter since the first µ4/3 camera was released in 2009. It was on another message board (Photo dot net) where I started the discussion. We even discovered a patent that Kodak had for and optical adapter that does this same thing too .. Originally intended to be used on telescopes to increase the speed of the telescope by a couple stops and have a camera that could be attached to it to to take photos using the slower better film that captures more detail.

I am glad someone finally put this principal into use on the Mirror less cameras. I think they avoided the Kodak patent by not reducing the FL as-much or speeding up the lens as much; tho i think that the image circle of long telephoto lenses and telescopes are much larger and the 28-100mm range cant have their image circle shrunk so much...

I just hope some Asian company produces an adapter with this optical setup for me to use my Minolta MD lenses on my µ4/3 camera.

Some lawyer person over at dvxuser.com calculated that the Kodak patent from 1996 will expire in march this year, so...

Direct link | Posted on Jan 15, 2013 at 18:35 UTC
On Just Posted: Olympus OM-D E-M5 review article (577 comments in total)
In reply to:

nawknai: That's the worst "con" list I've ever seen on DPReview.

Just say the camera is incredible and leave it at that.

Biggest con = video output is 30p only.

Makes this cam pretty much unusable for any serious videomaking in PAL & SECAM area.

Ever tried to film with 180 degree shutter at 30p (1/60th of a second) in a country which uses 50 hz mains electricity? ( AKA PAL & SECAM)

You end up with very nasty flickering due to the incompatible shutter speed.

I hope sincerely that Olympus realises how important 25p is for the majority of videographers in the world.

Direct link | Posted on May 2, 2012 at 20:03 UTC
In reply to:

Bastubacka: For videography applications, the focus throw and breathing characteristics will most probably be superior compared to FF or APS-C equivalents. Voigtländer has a good track record with their previous Noktons in this department. Cosina owns Zeiss, so I reckon they know how to build cinema lenses.

In my opinion, you simply can’t have the video quality of a hacked GH2 in any FF camera. Sizewise, GH2 + Voigtländer 17.5mm is still a lighter combination than any FF camera body alone.

I stand corrected. They announced a partnership with Zeiss back in November 2004. Here are some of the lenses Cosina currently manufactures for Zeiss:

ZE, ZF, ZF.2 SLR-lenses,

Distagon T*:
18/3,4
21/2,8
28/2
35/2
35/1,4

Planar T*:
50/1,4
85/1,4

Makro Planar T*:
50/2
100/2

ZM RF-lenses,

Distagon T*:
15/2,8

C Biogon T*:
21/4,5
35/2,8

Biogon T*:
21/2,8
35/2
25/2,8
28/2,8

Planar T*:
50/2

C Sonnar T*:
50/1,5

Tele-Tessar T*:
85/4

ZV medium format lenses,

Distagon T*:
50/4

Macro Planar T*:
120/4

Sonnar T*:
180/4

Cosina doesn't manufacture any cine style lenses for Zeiss. That being said, many Zeiss cine style lenses, like the compact primes, are based on those classic optical designs listed above. Who knows, Cosina may have taken a design clue or another from there?

Direct link | Posted on Feb 8, 2012 at 21:34 UTC

For videography applications, the focus throw and breathing characteristics will most probably be superior compared to FF or APS-C equivalents. Voigtländer has a good track record with their previous Noktons in this department. Cosina owns Zeiss, so I reckon they know how to build cinema lenses.

In my opinion, you simply can’t have the video quality of a hacked GH2 in any FF camera. Sizewise, GH2 + Voigtländer 17.5mm is still a lighter combination than any FF camera body alone.

Direct link | Posted on Feb 8, 2012 at 07:02 UTC as 15th comment | 2 replies
Total: 4, showing: 1 – 4