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CuriousOne
Joined: 31 Dec 2013
Posts: 669
Location: Home
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 Posted: Sun Nov 23, 2014 6:06 am Post subject: Convert petri lens to some mount, or sell them with adapter? |
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CuriousOne wrote:
Hello.
I have lot of several genuine Petri lenses for petri bayonet mount. These are 35/2.8, 55/1.4, 55/1.8, 55/2. I also have profesionally made adapter that allows them to be mounted on Sony mirrorless cameras. Technically, I can convert these lens to Sony Alpha, Pentax or Canon SLR mount (no Nikon, please). I want to sell this lot alltogether, without spending time and resources selling them separately, so how do you think, which will boost sales better, them converted to specific mount (which one?) or to sell them just with adapter included?
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I have nothing to compensate with lens |
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Layer-cake
Joined: 18 Mar 2013
Posts: 560
Location: Cape Town
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| Posted: Sun Nov 23, 2014 7:59 am Post subject: |
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Layer-cake wrote:
if possible I would rather convert to M42, then its usable on both and more platforms but if it was a choice between alpha and EF I think there are more canon users worldwide. |
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visualopsins
Joined: 05 Mar 2009
Posts: 10543
Location: California
Expire: 2025-04-11
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| Posted: Sun Nov 23, 2014 11:25 am Post subject: Re: Convert petri lens to some mount, or sell them with adap |
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visualopsins wrote:
| CuriousOne wrote: |
Hello.
I have lot of several genuine Petri lenses for petri bayonet mount. These are 35/2.8, 55/1.4, 55/1.8, 55/2. I also have profesionally made adapter that allows them to be mounted on Sony mirrorless cameras. Technically, I can convert these lens to Sony Alpha, Pentax or Canon SLR mount (no Nikon, please). I want to sell this lot alltogether, without spending time and resources selling them separately, so how do you think, which will boost sales better, them converted to specific mount (which one?) or to sell them just with adapter included? |
Nobody wants a "profesionally" made adapter ("profesionally" is misspelled) 
I have doubt you will recoup the cost of conversion. Nikon mount will adapt to significant more cameras than other mounts. I do not understand how spending time selling separate is more work than converting mounts?
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☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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JJB
Joined: 02 Oct 2014
Posts: 424
Location: USA
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| Posted: Sun Nov 23, 2014 2:57 pm Post subject: |
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JJB wrote:
I have seen vintage Petri to M42 adapters on ebay recently for around $30.
http://www.ebay.com/itm/PETRI-BAYONET-MOUNT-to-PENTAX-M42-SCREW-MOUNT-METAL-LENS-AND-ACCESSORY-ADAPTER-/171266860778?pt=US_Lens_Adapters_Mounts_Tubes&hash=item27e04ce6ea
New adapters made for a few models of cropped sensor cameras go for about $45-50.
http://www.ebay.com/itm/Petri-Petriflex-Breech-Lock-Mount-to-Sony-E-NEX-A7R-FS100-mount-Adapter-/181515057691?pt=US_Lens_Adapters_Mounts_Tubes&hash=item2a4323fa1b
This seller also offers Petriflex adapters for Samsung, Fuji, Lumix, etc.
It might be easier to provide that information to the buyer than to guess which adapter might be most marketable and try to produce/provide one on your own.
Good luck with your sale.
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Nikon D80 with 18/55 kit lens
Fujifilm XE-1 with 18/55 kit lens
Lenses:
Konica Hexanon: 28/3.5, 50/1.7 (EE), 55/3.5 macro, 135/3.2 28-135/4-4.5, 80-200/4
Mamiya Sekor SX 28/2.8, 50/2, 55/1.4, 135/2.8
Minolta: 50/1.7, 35-70/3.5, 35-105/3.5-4.5
Olympus Zuiko: 28/3.5, 50/1.8, 85/2
Rikenon: 55/1.4
Soligor: 135s made by Tamron, Komura, Tokina
Takumar/Asahi/Pentax: Pentax M 35/2.8, SMC Takumar 35/3.5, 50/1.7 (Pentax) 55/1.8 (Super Tak), 105/2.8, 200/4
Tokina 60-300, 4-5.6
Tamron: 103A 80-210/3.8-4, 46A 70-210/3.8-4, 300/5.6 (Vernon Edonar)
Vivitar: 28/2.5, S1 28-90/2.8 (Komine), S1 70-210/3.5 (Kiron)
Yashica: ML 28/2.8, 50/2
Yashinon: 50/1.4
German: Meyer Gorlitz Oreston 50/1.8, CZJ Tessar 50/2.8, Isco Gottingen 135/3.5, Schneider-Kreuzach 200/5.5
Soviet: Helios 44/2, Helios 44/4, Industar 50/3.5 (both silver and black) |
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CuriousOne
Joined: 31 Dec 2013
Posts: 669
Location: Home
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| Posted: Sun Nov 23, 2014 3:54 pm Post subject: |
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CuriousOne wrote:
Existing Petri to M42 adapters can't provide infinity focus, while converted to Canon/Sony lens can. Conversion to M42 can be technically made, but cost will be too much. The idea why I have to sell them as one lot, is the fixed postage price, which is rounded to 1kg, and equals $49 for 1kg. So there will be 1 lens or 3 - postage will be the same.
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I have nothing to compensate with lens |
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visualopsins
Joined: 05 Mar 2009
Posts: 10543
Location: California
Expire: 2025-04-11
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| Posted: Sun Nov 23, 2014 4:39 pm Post subject: |
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visualopsins wrote:
How about conversion to T2 mount?!
Of course 3 minutes after listing some Petri fanatic will berate you for ruining rare lenses, then buy them anyway because already own a T2-Petri adapter... 
Serious, I think best idea is to leave old warez as-is.
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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CuriousOne
Joined: 31 Dec 2013
Posts: 669
Location: Home
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| Posted: Sun Nov 23, 2014 5:18 pm Post subject: |
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CuriousOne wrote:
It is not possible.
Register distance of these lens is shorter than register distance of Nikon or T2, so even if mechanical conversion is possible, there will be no infinity focus. Conversion to M42 is possible, but not for all models. Petri lenses come with either flat pin or round pin. Round pin ones can be converted with ease, flat pin ones require too much machine rework.
Speaking in general, 55/1.4 has nice sharpness, better than Mamiya/Sekor 55/1.4. But it also has blooming effect @ 1.4, more pronounced, than other lens of same era.
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I have nothing to compensate with lens |
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philslizzy
Joined: 07 Aug 2012
Posts: 4748
Location: Cheshire, England
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| Posted: Sun Nov 23, 2014 7:21 pm Post subject: |
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philslizzy wrote:
Personally I'd sell them along with the adapter. Petri isn't a common mount but adapters are available to use them on other cameras. Petri collectors will want them in the native mount.
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Hero in the 'messin-with-cameras-for-the-hell-of-it department'. Official. |
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