Pentax-DA (18-55) lens on a full frame camera

[montecarlo]

Hello,

Some test with the "new" Pentax P50 on which I mount a DA Pentax lens (18-55 kit lens), so its a lens designated for APS-C sensors. Vigneting is present from about 18mm till ~24mm. Even if the DA has no diaphragm ring the camera can control it when P exposure mode is used.
Here are some samples of a Kodak ProFoto 100 roll I used :


(c) Cosmin Munteanu


(c) Cosmin Munteanu


(c) Cosmin Munteanu


(c) Cosmin Munteanu


(c) Cosmin Munteanu


(c) Cosmin Munteanu
_________________
Zenit E , Helios-44 58mm f:2.0 , Tair-11A 135mm f:2.8, Jupiter-9 85mm f:2.0
Porst Reflex TL , Carl Zeiss Jena Flektogon 35mm f:2.4 , Pentacon 50mm f:1.8 , Porst MC 135mm f:2.8
Ricoh XR7, Ricoh KR10, Petri GX-1 , Chinon MC 28mm f:2.8 , Varexon EEK 35mm f:2.8 , smc Pentax-M 50mm f:1.7, Ricoh 50mm f:1.7 , Soligor T 135mm f:2.8 , Chinon MC 200mm f:3.3
Pentax K100D , smc Pentax-DA 18-55 , smc Pentax-FA 80-320

[Jesito]

Hi Cosmin, I missed this thread before...

Nice experiment!.
This lens is not so bad as reported at the forums. The fact of being part of a cheap kit says nothing about it's quality, that for me is far better than the Canon 18-55 kit.
Letting apart the vignetting, the tunnel shot is very nice!.

I know you have also a K100D, how are your experiences with old mflenses?.

Best regards,
Jes.
_________________
Jesito's backsack:
Zooms Sigma 18-200, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro (Adaptall)
Fixed CZJ Planar 50mm 1.7, Helios 44-2, Cosinon 28mm, CZJ Sonnar 135, Industar-61, Jupiter-9, Industar-50, CZJ Pancolar 50/1.8
DSLR Canon 350D, Pentax K10D
TLR/6x6/645 YashicaMat, Mamiya 645E, Petri 6x45, Nettar
SLR Minolta X300, Fuji STX I, Fuji STX II, Praktica VLC3, Pentax P30, EXA500, EXA 1A
Rangefinders Chinon 35EE, Konica C35 auto, Olympus 35RC, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3, Regula Cita III, Voigtlander Vitoret LR, Welta Welti-I
Compact Film Konica C35V, Voigtlander Vitorets, Minox 35 ML, Canon Prima Super 105
Compact Digital Caplio GX100, Aiptek Slim 3000, Canon Powershot 520


Life is that boring wasted time in between two pictures

[LucisPictor]

That's an interesting experiment. (But Canon users should be careful, the EF-S mount is different from the EF mount!)

I tried that with my Tokina 4/12-24, this lens can be mount at a FF or film cam and it show vignetting only up to 18mm, so it can be used as a 19mm lens at a FF.
_________________
There are two kinds of people in the world: those who divide the world into two kinds of people, and those who don’t.
"Schnäppchenjäger" | "KAPCTEH" | "Karusutenu" | "Carsten" | T-shirt?
Cams in use: EOS 40D, EOS 350D, EOS500, Spotmatic SPII, Yashica-24, EXA I & 1c, Zenit EM; Oly 35RC,Minolta Hi-Matic E & F, Ricoh 500RF, Yashica Electro 35 GS, FED-3b and some others...
Lenses in use: Asahi Pentax: 2.8/28;3.5/35;1.4/50;1.7/50;2.8/105;28-80 | Canon (AF):1.8/50;17-85;75-300 | Former GDR: Pentacon 3.5/30; Pentaflex 1.8/50; CZJ 2.8/50; CZJ 4/135; Pentacon 4/200 | Fujinon: 43-75 | Hanimex: 3.5/23; 4/100;80-200 | Hoya: 25-42;80-205 | Kiron: 2/28;70-210 | Leica: Elmarit-R 2.8/35 | Mamiya: 1.8/55 | Minolta: 1.7/50 | Nikkor: 2.8/24;2/35;2/50;1.2/55;1.8/85;3.5/135 | West German: Ludwig 2.9/50; Meyer 2.8/100; Will 4.5/105; Schneider 3.5/135;Enna 3.5/135; Zeiss 4/135;Isco 4/135; Enna 4.5/240 | Olympus: 3.5/28;1.4/50;3.5/135 | Rikenon: 1.7/50;35-70 | Rollei/Voigtländer: 1.4/55;1.8/50 | Russian: Peleng3.5/8; Zenitar2.8/16; MIR2.8/37; Volna2.8/50; Industar3.5/50; Industar3.5/5cm; Helios2/50; Helios2/58; Volna2.8/80; Jupiter2/85; Kaleinar2.8/100;Tair2.8/135; Jupiter3.5/135; Jupiter4/135; Telear3.5/200; Jupiter4/200; Tair4.5/300;RF: Jupiter2.8/35;Industar2.8/53 | Sigma: 28-85;28-105(AF);17-70(AF) | Soligor: 28-105;35-200;70-220 | Tamron: 2.5/24;2.5/135;2.8/135;60-300;70-210 | Tokina: 28-105;80-200;12-24(AF);70-210(AF) | Vivitar: 3.5/17;2/24;2/28;2.5/28;2.8/28 | Yashica: 1.7/50;2/5cm | Other Japanese: Cosina3.8/20; Petri2.8/28; Albinar2.8/28; Porst1.8/35; 2.8/135; Weltblick3.5/135; Beroflex 8/500; Spiratone28-200; Maginon70-210
Green are the lenses I shoot the most.
More? http://forum.mflenses.com/viewtopic.php?t=65

[montecarlo]

[montecarlo]

One more thing: you must enable in the manu the using of lenses with diaphragm ring. That's important.
Of course, the manual is the best guide.
_________________
Zenit E , Helios-44 58mm f:2.0 , Tair-11A 135mm f:2.8, Jupiter-9 85mm f:2.0
Porst Reflex TL , Carl Zeiss Jena Flektogon 35mm f:2.4 , Pentacon 50mm f:1.8 , Porst MC 135mm f:2.8
Ricoh XR7, Ricoh KR10, Petri GX-1 , Chinon MC 28mm f:2.8 , Varexon EEK 35mm f:2.8 , smc Pentax-M 50mm f:1.7, Ricoh 50mm f:1.7 , Soligor T 135mm f:2.8 , Chinon MC 200mm f:3.3
Pentax K100D , smc Pentax-DA 18-55 , smc Pentax-FA 80-320

[Jesito]

Thanks a lot Cosmin!, that's the rough guides I needed. It seems that my M42 adapter is not adequate, so I'm in the process of getting a new one.
Mine seems to connect some of the pins at the camera, so once installed, I only get an erratic behaviour on just Av mode. (Changing the dial seems not to affect the selection).
Best regards,
Jes.
_________________
Jesito's backsack:
Zooms Sigma 18-200, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro (Adaptall)
Fixed CZJ Planar 50mm 1.7, Helios 44-2, Cosinon 28mm, CZJ Sonnar 135, Industar-61, Jupiter-9, Industar-50, CZJ Pancolar 50/1.8
DSLR Canon 350D, Pentax K10D
TLR/6x6/645 YashicaMat, Mamiya 645E, Petri 6x45, Nettar
SLR Minolta X300, Fuji STX I, Fuji STX II, Praktica VLC3, Pentax P30, EXA500, EXA 1A
Rangefinders Chinon 35EE, Konica C35 auto, Olympus 35RC, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3, Regula Cita III, Voigtlander Vitoret LR, Welta Welti-I
Compact Film Konica C35V, Voigtlander Vitorets, Minox 35 ML, Canon Prima Super 105
Compact Digital Caplio GX100, Aiptek Slim 3000, Canon Powershot 520


Life is that boring wasted time in between two pictures

[montecarlo]

If the adaptor is tis or like this http://www.bdimitrov.de/kmp/lenses/adapters/screw.jpg (there are more makes: Pentax, Kood, Hama, Kalt, etc... or just "no-name" ones) than it sould work. When using M42 lens on Av mode, the camera will change the exposure time and the diaphragm mub be turned on M (I think Helios-44M... lenses don't have one, so can be used only wide open - on a similar Zenitar 50mm I tooked out a spring from the mechanism of the lens and "transformed" the lens into a permanent M lens from a permanent A one). I think you might need a +0.5 may be even +1 compensation to make in order to acheve a good exposure (thants my case). If you use M mode, the dial on the back changes the shutter speed.
_________________
Zenit E , Helios-44 58mm f:2.0 , Tair-11A 135mm f:2.8, Jupiter-9 85mm f:2.0
Porst Reflex TL , Carl Zeiss Jena Flektogon 35mm f:2.4 , Pentacon 50mm f:1.8 , Porst MC 135mm f:2.8
Ricoh XR7, Ricoh KR10, Petri GX-1 , Chinon MC 28mm f:2.8 , Varexon EEK 35mm f:2.8 , smc Pentax-M 50mm f:1.7, Ricoh 50mm f:1.7 , Soligor T 135mm f:2.8 , Chinon MC 200mm f:3.3
Pentax K100D , smc Pentax-DA 18-55 , smc Pentax-FA 80-320

[Jesito]

[montecarlo]

When taking off the lens, first hold the camera with the lens down , unscrew the lens , on the left of the mount/adapter, you'll se the little piece/spring of metal. With you finger nail or with the tool sold together with the adapter, push the little piese of metal towards the adapter and in the same time, turn the adapter counterclockwise. Only after that you can remove the adapter.
Yes its more tricky to use M42 adapter on Pentax than on Canon beacause the adapter in the case of Pentax must stay completely in the K Pentax's mount in order to achieve infinity focus, like here: http://www.jr-worldwi.de/photo/images/adapter_in_body_small.jpg (a KOOD M42 -> K Pentax adapter) . The gold ring you can see was manufatured/glued to the adapter to make able the use of only auto M42 lenses without modifying the lenses.
http://www.jr-worldwi.de/photo/index.html?M42_auto_adapter_Pentax_PK.html

!!! Near the red dot (http://www.jr-worldwi.de/photo/images/adapter_in_body_small.jpg ) on the mount you can see the piese of metal/spring I was talking above .

Hope I helped you a little.
_________________
Zenit E , Helios-44 58mm f:2.0 , Tair-11A 135mm f:2.8, Jupiter-9 85mm f:2.0
Porst Reflex TL , Carl Zeiss Jena Flektogon 35mm f:2.4 , Pentacon 50mm f:1.8 , Porst MC 135mm f:2.8
Ricoh XR7, Ricoh KR10, Petri GX-1 , Chinon MC 28mm f:2.8 , Varexon EEK 35mm f:2.8 , smc Pentax-M 50mm f:1.7, Ricoh 50mm f:1.7 , Soligor T 135mm f:2.8 , Chinon MC 200mm f:3.3
Pentax K100D , smc Pentax-DA 18-55 , smc Pentax-FA 80-320