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davev8app
Joined: 09 Dec 2010 Posts: 134 Location: UK
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Posted: Fri Dec 16, 2016 8:41 am Post subject: Carl Zeiss Jena Flektogon 35mm 2.4 VS Prakticar question |
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davev8app wrote:
The Praktica B mount branded as Prakticar 2,4/35 MC Carl Zeiss Jena lens....is it the same as the Carl Zeiss Jena Flektogon 35mm 2.4??? or a are they different/same /not as good
if the same i have a feeling the one that not say flektogon on it will be cheaper _________________ nex-3c MD f3.5 35-70mm macro.. rokkor 50-135 F3.5 FDn 50mm 1.4.. black jupiter 11 135 F4..big list of 28mm 35mm 50mm 135mm to see what are keepers 5D,40D ,20D, MF Tamron SP 90 F2.5 Macro, Canon 17-35 F2.8L, Canon 80-200 F2.8L Magic drainpipe, Tokina ATX 28-70 F2.6-F2.8 Pro11, Canon 17-55 F2.8 IS The slow one Canon 100-300 F5.6L. Lens i wish i never sold>> Carl Zeiss Jena Sonnar 180 mm f2.8< |
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tb_a
Joined: 26 Jan 2010 Posts: 3678 Location: Austria
Expire: 2019-08-28
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Posted: Fri Dec 16, 2016 9:19 am Post subject: Re: Carl Zeiss Jena Flektogon 35mm 2.4 VS Prakticar questio |
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tb_a wrote:
davev8app wrote: |
The Praktica B mount branded as Prakticar 2,4/35 MC Carl Zeiss Jena lens....is it the same as the Carl Zeiss Jena Flektogon 35mm 2.4??? or a are they different/same /not as good
if the same i have a feeling the one that not say flektogon on it will be cheaper |
Construction wise they are the same lenses. The CZJ branded lens is the older one with a production date before 1971 and most probably in M42 mount. The Prakticar branded lens is from the late 70's or 80's and because of the not so common B-mount most probably the cheaper one. IMHO the coating and lubricating of the newer lens is the better one. In general the old post war CZJ lenses are prone to stuck apertures and stiff focus because of bad lubricating. Therefore from a practical point of view and if you don't have problems with the B-mount I would recommend the newer Prakticar lens. _________________ Thomas Bernardy
Manual focus lenses mainly from Minolta, Pentax, Voigtlaender, Leitz, Topcon and from Russia (too many to be listed here). |
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davev8app
Joined: 09 Dec 2010 Posts: 134 Location: UK
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Posted: Fri Dec 16, 2016 6:54 pm Post subject: Re: Carl Zeiss Jena Flektogon 35mm 2.4 VS Prakticar questio |
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davev8app wrote:
tb_a wrote: |
davev8app wrote: |
The Praktica B mount branded as Prakticar 2,4/35 MC Carl Zeiss Jena lens....is it the same as the Carl Zeiss Jena Flektogon 35mm 2.4??? or a are they different/same /not as good
if the same i have a feeling the one that not say flektogon on it will be cheaper |
Construction wise they are the same lenses. The CZJ branded lens is the older one with a production date before 1971 and most probably in M42 mount. The Prakticar branded lens is from the late 70's or 80's and because of the not so common B-mount most probably the cheaper one. IMHO the coating and lubricating of the newer lens is the better one. In general the old post war CZJ lenses are prone to stuck apertures and stiff focus because of bad lubricating. Therefore from a practical point of view and if you don't have problems with the B-mount I would recommend the newer Prakticar lens. |
thats good, so they are optically similar with the later lens having better coatings ..thats good ..i have seen some very good reports for the Flek so was hoping the Praktica was the same...i see B to EOS adaptors are available..with one of those on the back it can go on a DSLR or my M2 with the EF to M adaptor .........thanks _________________ nex-3c MD f3.5 35-70mm macro.. rokkor 50-135 F3.5 FDn 50mm 1.4.. black jupiter 11 135 F4..big list of 28mm 35mm 50mm 135mm to see what are keepers 5D,40D ,20D, MF Tamron SP 90 F2.5 Macro, Canon 17-35 F2.8L, Canon 80-200 F2.8L Magic drainpipe, Tokina ATX 28-70 F2.6-F2.8 Pro11, Canon 17-55 F2.8 IS The slow one Canon 100-300 F5.6L. Lens i wish i never sold>> Carl Zeiss Jena Sonnar 180 mm f2.8< |
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Layer-cake
Joined: 18 Mar 2013 Posts: 560 Location: Cape Town
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Posted: Sat Dec 17, 2016 3:28 am Post subject: |
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Layer-cake wrote:
There's a good chance your adapter won't give you infinity focus, only a 0.4mm difference in the Eos and praktica flange and it quite hard to machine a good quality adapter that thin, also another reason the praktica versions are cheaper. |
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davev8app
Joined: 09 Dec 2010 Posts: 134 Location: UK
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Posted: Sat Dec 17, 2016 2:49 pm Post subject: |
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davev8app wrote:
Layer-cake wrote: |
There's a good chance your adapter won't give you infinity focus, only a 0.4mm difference in the Eos and praktica flange and it quite hard to machine a good quality adapter that thin, also another reason the praktica versions are cheaper. |
i see.... there are 2 adapters on the bay that claim infinity focus ...they are a bit more expensive, i assumed that was due to being less popular mount ..maybe its partly the cost of machining _________________ nex-3c MD f3.5 35-70mm macro.. rokkor 50-135 F3.5 FDn 50mm 1.4.. black jupiter 11 135 F4..big list of 28mm 35mm 50mm 135mm to see what are keepers 5D,40D ,20D, MF Tamron SP 90 F2.5 Macro, Canon 17-35 F2.8L, Canon 80-200 F2.8L Magic drainpipe, Tokina ATX 28-70 F2.6-F2.8 Pro11, Canon 17-55 F2.8 IS The slow one Canon 100-300 F5.6L. Lens i wish i never sold>> Carl Zeiss Jena Sonnar 180 mm f2.8< |
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