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M42 Pentacon lenses around 30mm
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PostPosted: Fri Aug 29, 2008 2:04 pm    Post subject: M42 Pentacon lenses around 30mm Reply with quote

From what I can find there are three with very similar focal lengths:

Pentacon 28/2.8 MC
Pentacon/Meyer Orestegon 29/2.8 MC
Pentacon/Meyer Lydith 30/3.5 (single coating)

Other than the coating what is the difference between these three in optical quality?

Richard


PostPosted: Fri Aug 29, 2008 3:08 pm    Post subject: Reply with quote

All three lenses was meyer optic's.

The pentacon 2,8/29 isn't the sharp lens and usually have a misaligned
}
elements or blade problems. It has a nice colors but I not recomend it.

The shame is a traditional 7 elements with good MC.

The pentacon (don't be prakticar?) 2,8/28, I don't have this lens, but think

that it could be the same lens that 2,8/29. I look for other option.

If it's prakticar, is sigma lens - i think -, overall lens.

I don't know the rendition of the 30 mm. lydith.

Rino.


PostPosted: Fri Aug 29, 2008 3:43 pm    Post subject: Re: M42 Pentacon lenses around 30mm Reply with quote

richard64 wrote:
From what I can find there are three with very similar focal lengths:

Pentacon 28/2.8 MC
Pentacon/Meyer Orestegon 29/2.8 MC
Pentacon/Meyer Lydith 30/3.5 (single coating)

Other than the coating what is the difference between these three in optical quality?

Richard


http://www.mflenses.com/gallery/v/german/pentacon/pentacon_29mm_f2_8/

http://www.mflenses.com/gallery/v/german/meyer/orestegon_29mm_f2_8/
http://www.mflenses.com/gallery/v/german/meyer/lydith_30mm/

Really good ones from Meyer are :

http://www.mflenses.com/gallery/v/german/meyer/primagon_35mm/
http://www.mflenses.com/gallery/v/german/meyer/helioplan_40mm_4_5/
http://www.mflenses.com/gallery/v/german/meyer/helioplan_4_5_40/