Visit MPB Visit MPB Visit MPB

FS: Porst 55mm f1.2

Jal87
Posted 23/02/2013 - 13:36 Link
I am selling my Porst Color Reflex MC Auto 55mm f1.2.
Additional items: 2 UV filters, 1 CPL filter, 3 in 1 rubber hood, front and rear caps.

Condition: The lens is in fully working order. Front and rear glasses do not have any dust, fungus or scratches. Aperture works well and oil free.

The lens was bought from ebay. I am selling it due to being unhappy with the sharpness. I am a beginner, I believe professionals can use the lens more effectively.

#PLEASE do not ask to send the lens first. I have described the condition very clearly. A video and some pictures below to make it more clear. Comparison between Pentax M 50mm f1.7 and Porst. I am open to offers more than £200 including RMSD (I will post on the same day), so I will take the best offer.

Video of the lens link

Porst at f1.2

Comment Image


Pentax M 50mm at f1.7

Comment Image


Porst at f2.8

Comment Image


Pentax M 50mm at f2.8

Comment Image
I am the hobbyist.
Flickr
Porst Reflex Auto 55mm f1.2, Pentax DA XS 40mm f2.8, Pentax M 50mm f1.7, Pentax DA 18-55mm ED WR, Pentax DA 50-200mm ED WR, Pentax M 80-200mm f4.5
Edited by Jal87: 23/02/2013 - 13:55
Jal87
Posted 23/02/2013 - 21:11 Link
Swap possible for an auto focus f1.4 or macro f2.8.
I am the hobbyist.
Flickr
Porst Reflex Auto 55mm f1.2, Pentax DA XS 40mm f2.8, Pentax M 50mm f1.7, Pentax DA 18-55mm ED WR, Pentax DA 50-200mm ED WR, Pentax M 80-200mm f4.5
Jal87
Posted 24/02/2013 - 18:33 Link
Price reduced to £190 incl RMSD. If you want to swap (f2.8 or higher aperture) your lens PM me.
I am the hobbyist.
Flickr
Porst Reflex Auto 55mm f1.2, Pentax DA XS 40mm f2.8, Pentax M 50mm f1.7, Pentax DA 18-55mm ED WR, Pentax DA 50-200mm ED WR, Pentax M 80-200mm f4.5
Edited by Jal87: 24/02/2013 - 18:42
Jal87
Posted 25/02/2013 - 11:27 Link
Final price drop £155 (bought for £147, so no profit) incl RMSD. Same day post. The topic is closed after 3 days if nobody is interested.

P.S. The one and only problem is sharpness.

f1.2. Taken just now on a cloudy morning.
Comment Image


Taken a few days ago
Comment Image


Thanks,
Jalal
I am the hobbyist.
Flickr
Porst Reflex Auto 55mm f1.2, Pentax DA XS 40mm f2.8, Pentax M 50mm f1.7, Pentax DA 18-55mm ED WR, Pentax DA 50-200mm ED WR, Pentax M 80-200mm f4.5
Edited by Jal87: 25/02/2013 - 11:53
Algernon
Posted 25/02/2013 - 13:22 - Helpful Comment Link
I think your problem of sharpness is due to the focus
being slightly out. Try it on a tripod with a shot on
focus of a box or a bottle and then without changing the
focus move the bottle back 10mm, take a shot, move
another 10mm and take another. Then move it back to
the original position and repeat the shots moving the
object towards you.

The shot of the leaves above isn't too bad. You only
have about +/- 7mm DOF and there may be some camera
or leaf movement. The bokeh looks good.

-
Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi
Edited by Algernon: 25/02/2013 - 13:23
Jal87
Posted 25/02/2013 - 14:15 Link
I will try that. The lens has infinity focus problem. But I read that's a common issue for porst. The lens probably was reassembled and something just went wrong. I think I should have returned it. I thought it was a bargain
I am the hobbyist.
Flickr
Porst Reflex Auto 55mm f1.2, Pentax DA XS 40mm f2.8, Pentax M 50mm f1.7, Pentax DA 18-55mm ED WR, Pentax DA 50-200mm ED WR, Pentax M 80-200mm f4.5
Jal87
Posted 25/02/2013 - 18:46 Link
Hi Algi, I tried what you said, probably not as exactly as you said, perhaps the flower moved a bit horizontally (especially 20mm front one)... but check it out. In my opinion, 10 or 20mm front from the original position is the sharpest one compared to others.

30mm back from the original position

Comment Image


20mm back

Comment Image


10mm back

Comment Image


Original position

Comment Image


10mm front from the original position

Comment Image


20mm front

Comment Image


30mm frontComment Image


Regards,
Jalal
I am the hobbyist.
Flickr
Porst Reflex Auto 55mm f1.2, Pentax DA XS 40mm f2.8, Pentax M 50mm f1.7, Pentax DA 18-55mm ED WR, Pentax DA 50-200mm ED WR, Pentax M 80-200mm f4.5
Edited by Jal87: 25/02/2013 - 19:00
Algernon
Posted 25/02/2013 - 21:12 Link
10mm in front looks about right. Unfortunately red doesn't
photograph too good and you can see that there isn't much
DOF at f/1.2 I still think the lens is capable of
better, there may still be a bit of camera shake. Did you
have the mirror up and a 2/3 sec. delay?

Sadly that's the only way you can get the focus spot on,
with MF... I normally use a focusing rack and bracket
in 7mm steps and then pick out the best.

Good subject matter is needed for this lens.... some examples..

http://www.flickriver.com/search/porst+f1.2/

-
Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi
Edited by Algernon: 25/02/2013 - 21:13
Jal87
Posted 26/02/2013 - 11:41 Link
Algi, I just think this lens is not for me. That's why I think somebody else can use it better.

Before it goes on ebay auction, I will take offers here.

Regards,
Jalal
I am the hobbyist.
Flickr
Porst Reflex Auto 55mm f1.2, Pentax DA XS 40mm f2.8, Pentax M 50mm f1.7, Pentax DA 18-55mm ED WR, Pentax DA 50-200mm ED WR, Pentax M 80-200mm f4.5
Edited by Jal87: 26/02/2013 - 11:42
Algernon
Posted 26/02/2013 - 12:05 Link
Good Luck with the sale.... Looks like someone
will get a bargain
Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi
Joe S
Posted 28/02/2013 - 08:39 Link
If it doesn't sell I might be interested later. The problem is I'm travelling now and will not be home (in Denmark) before June or so. To be honest, the pictures are not promising but at a bargain price I would consider taking the chance. Your ebay auction is UK only, though. You are welcome to get back to me now or later on PM.
Hi. My name is Joel and I'm a travelholic.
Stolen kit: Pentax K7 #3428965 and Pentax FA 43mm #0028350
Jal87
Posted 28/02/2013 - 19:22 Link
Joe S wrote:
If it doesn't sell I might be interested later. The problem is I'm travelling now and will not be home (in Denmark) before June or so. To be honest, the pictures are not promising but at a bargain price I would consider taking the chance. Your ebay auction is UK only, though. You are welcome to get back to me now or later on PM.

PM sent.
I am the hobbyist.
Flickr
Porst Reflex Auto 55mm f1.2, Pentax DA XS 40mm f2.8, Pentax M 50mm f1.7, Pentax DA 18-55mm ED WR, Pentax DA 50-200mm ED WR, Pentax M 80-200mm f4.5

Add Comment

To leave a comment - Log in to Pentax User or create a new account.