Forgot Password
Pentax Camera Forums Home
 

Showing results 1 to 25 of 27 Search:
Forum: Pentax K-30 & K-50 07-24-2019, 10:28 PM  
Requiem for a 35-Cent Camera Killer
Posted By Fluegel
Replies: 26
Views: 2,084
Bernard Haitink is a good friend so was Volker Strauss.
Name dropping does make much impression does it?


Paul

---------- Post added 07-24-19 at 10:32 PM ----------



Good for you!

Australian importers do have a different and very positive attitude towards customer satisfaction.
Could almost be the Japanes attitude. Japanese companies are ashames when their products fail.


Paul
Forum: Pentax K-5 07-19-2019, 09:58 PM  
Looking for an 85mm lens for my K5
Posted By Fluegel
Replies: 21
Views: 1,250
May I suggest any of the excellent 100 mm lenses for this purpose.
Longer lenses give you the opportunity to keep a bit more distance from the subject.
Most 100 mm lenses are of the macro kind which is an advantage as well.
They are less fast but that can be compensated for by choosing a higher Iso range.

Of the older manual lenses try to find the A versions that will give auto aperture control.

Paul
Forum: Pentax K-30 & K-50 07-19-2019, 02:05 PM  
Requiem for a 35-Cent Camera Killer
Posted By Fluegel
Replies: 26
Views: 2,084
Thanks Mike.

Had a chance to try a K5 II body.
Liked the handling very much.
Good chance the K5 will be my next one.

In the mean time shooting with the A series macro lenses is great fun.


Paul
Forum: Pentax K-30 & K-50 07-03-2019, 12:01 AM  
Requiem for a 35-Cent Camera Killer
Posted By Fluegel
Replies: 26
Views: 2,084
I am sorry to read about the bad luck users of more recent bodies have.
Forums and sites that offer cameras for sale warned me about these issues.
Took me a while to find a nice K20d to replace my stolen K20d.
Found a near mint set of A series macro lenses, the 50/2.8 and the Dental 100 mm.

One of my caracter flaws is a poor ability to cope with defective gear.
This forum is a massive source of information and fun to read.
It pointed out a number of later bodies do not suffer from these poor quality solenoids. Good to know.
The stamp sized 14 Mp sensor of the K20d suits my purpose.
No need to upgrade to a K1.
Forum: Pentax K-30 & K-50 07-01-2019, 06:43 PM  
Requiem for a 35-Cent Camera Killer
Posted By Fluegel
Replies: 26
Views: 2,084
Photogem,

You went a bit off topic with your description of the end of European vacuüm tube production.
I hope I may ad some more off topic lines.

In the seventies I designed a high end tube amp using 3 E80L penthodes as driver and phase inverter.
The theory came from an American text book that stated the driver section should have a range of at least 1 Mhz.
This design caused quite a stir amongst enthousiasts.
Contact me using a PM when you are interested to learn more.
Forum: Pentax K-30 & K-50 06-30-2019, 07:05 AM  
Requiem for a 35-Cent Camera Killer
Posted By Fluegel
Replies: 26
Views: 2,084
A pity more recent Pentax models have issues.
That is why I stick to the K20d body, an old workhorse that never lets me down.

14 Mp is more than enough for the kind of shooting I do.

I started out with 4Mp digital back for a staggering 20.000 USD.
Those were the days of early digital camera backs.
I needed a crane to lift the thing to fit it to a body.
All advertisng agencies wanted digital imaging, the investment was returned in a year.

14 Mp is a welcome improvement and quite enough for my needs.
Forum: General Talk 12-13-2017, 02:29 AM  
Really unhappy with KEH customer service
Posted By Fluegel
Replies: 15
Views: 2,070
In my opinion, KEH's rating system is unreliable. They have not refunded my costs for shipping when their description was completely wrong.
Images from actual items for sale do not exist.

Paul

---------- Post added 12-13-17 at 02:34 AM ----------



Trust me KEH operates with a healthy profit margin.

Paul
Forum: Repairs and Warranty Service 12-12-2017, 04:56 PM  
A horrible customer service odyssey.
Posted By Fluegel
Replies: 41
Views: 2,795
Sorry Steve, your conclusion is incorrect.
Pentax/Ricoh are not the party responsable to see that the customer gets what he paid for.
EU rules state that the seller of the body is responsable to compensate the buyer of items that fail repeatedly while still under warranty.

In this case Egalaxy seems to have communicated directly with the buyer.
That does not relieve the seller from its responsability to compensate the buyer.
Forum: Pentax SLR Lens Discussion 12-12-2017, 04:42 PM  
Macro lenses for landscape?
Posted By Fluegel
Replies: 57
Views: 4,084
Are you kidding me?

Judging a severely reduced digitally registered image, if I remember correctly the file was 80 Mb, on a screen with limited resolution and contrast.
Forum: Pentax SLR Lens Discussion 12-12-2017, 06:17 AM  
Macro lenses for landscape?
Posted By Fluegel
Replies: 57
Views: 4,084
What you can do with a subject is limited by the possibilities the equipment offers.

Attached a largely rescaled image from a new powerplant.
These kind of images are only possible with lenses that offer minimal distortion and high resolution.

With portraits high resolution and strong contrast is not wanted.
The use of lenses with these kind of properties will give you trouble with any female over the age of 12 like a good photographer friend used to say. Horses for courses.

Paul

---------- Post added 12-12-17 at 06:50 AM ----------



Your lack of historical knowledge of lens design is an insult to highly regarded designers in the industry.
Ludwig Bertele designed the first Biogon lens in the thirties. With modest means like a slide rule he calculated this lens.
The design was never upgraded untill the properties of new optical glass made a recalculation necessary at the end of the nineties.
Due to environmental legislation optical glass no longer contained substances that were considered unwanted from an environmental point of view.

Carl Zeiss asked Victor Hasselblad to design a MF camera that made the use of the Biogon lens possible.
In 1954 Hasselblad introduced the first Supreme Wide Angle camera at the Photokina in Cologne.
That camera later became the well known SWC at the end of the fifties.

The Biogon lens was recalculated in 2000 with the use of highly sophisticated computer software.
The result closely aproached the original design made over sixty years earlier by Ludwig Bertele.
It did not improve the qualities of the original design, the new 905SWC closely approached the original Supreme Wide Angle camera.

The attached image was made with a 903SWC and Hasselblads 50 Mp digital back.


Paul
Forum: Pentax SLR Lens Discussion 12-12-2017, 03:27 AM  
Macro lenses for landscape?
Posted By Fluegel
Replies: 57
Views: 4,084
Macro lenses used for longer distance and infinity shots can give good results.
It depends on how much the lens designer and manufacturer have been prepared to compromise on macro performance.
I was surprised Carl Zeiss went this route with the 120/4 Makro Planar.

I assume Pentax made the same choice with their macro lenses.


MTF data for infinity of 120 S-Planar, 120 CFi and 100 mm Planar :

120 S-Planar http://www.hasselbladhistorical.eu/pdf/lds/C120.pdf

120 Makro-Planar http://www.hasselbladhistorical.eu/pdf/lds/CFi120.pdf

100 Planar http://www.hasselbladhistorical.eu/pdf/lds/CF100.pdf


Paul
Forum: Pentax SLR Lens Discussion 12-12-2017, 01:05 AM  
Macro lenses for landscape?
Posted By Fluegel
Replies: 57
Views: 4,084
I do not have to proof anything.

For all those who still doubt my first post please look at the lens data from Carl Zeiss, in particular the MTF data.

A comparison between the older true macro lens S-Planar and the later Makro-Planar.
The Makro Planar was less of a macro lens than the S-PLanar and can be used at infinity where the S-Planar is useless at infinity.

Resolution is less good and distortion has increased for the later Makro Planar lens in macro range.

link: https://tinyurl.com/ybqbb3w9

Too much work to comment all posts who contest my claim.
I will leave it at one who was particularly interesting:
This gentleman wrote" new macro lens designs have floating elements".
Another misconception I am afraid.
Floating elements were first used to improve close range IQ of wide angle lenses.
It has nothing to do with macro lens design. Later zoom lenses also used floating elements.
A zoom lens has nothing to do with macro although some manufactureres give zoom lenses a macro label.

I thank all of you for some great images posted in this thread.

An extreme sample of images at infinity are well known pictures of the earth made by astronauts on the moon.
They used a Carl Zeiss 100 mm Planar lens from the MK series.
MK stands for Mess Kamera, cameras and lenses used to perform measurments.
I happen to have a 100 mm MK lens which is an improved version of the already excellent 100 mm Planar.

Only two lens designs from CZ made for Hasselblad were used in space.
The other one is a rare 60 mm Biogon lens.


I wish all of you much pleasure with Pentax gear, keep up the good work.



Paul
Forum: Repairs and Warranty Service 12-12-2017, 12:30 AM  
A horrible customer service odyssey.
Posted By Fluegel
Replies: 41
Views: 2,795
I doubt Pentax knows the meaning of the EU consumer protection rules.
Won't do any harm to remember them and use this legislation to support your claim for a new camera.
If you happen to know a friendly lawyer ask him to use his stationairy to write the claim.

Make a copy of the letter and send that to Pentax or is it Ricoh to inform them how you have been treated as customer.
Watch the news in Japan, it is possible some poor bastard in those companies commits seppeku because of this.


(Seppeku is a ritual way to commit suicide)



Paul
Forum: Pentax SLR Lens Discussion 12-11-2017, 12:40 AM  
Macro lenses for landscape?
Posted By Fluegel
Replies: 57
Views: 4,084
That is easy.

Look at MTF data published by Carl Zeiss.
Forum: Repairs and Warranty Service 12-11-2017, 12:22 AM  
A horrible customer service odyssey.
Posted By Fluegel
Replies: 41
Views: 2,795
c_kamb,

Please keep us informed about new deveopments.

Stay with Pentax, the bodies are userfriendly and with the exception from the K3 quite well built.
Many alternatives for the K3.

Paul
Forum: Pentax SLR Lens Discussion 12-10-2017, 03:37 PM  
Macro lenses for landscape?
Posted By Fluegel
Replies: 57
Views: 4,084
There certainly are some interesting comments here.

Thanks.
Forum: Repairs and Warranty Service 12-10-2017, 11:45 AM  
A horrible customer service odyssey.
Posted By Fluegel
Replies: 41
Views: 2,795
I am not familiar with US laws regarding consumer protection
The VW emission scandal results in a mass claim against VW. That claim has more chance in court because it concerns many buyers of VW cars.

EU legislation is quite explicit. Two unsuccesfull repair attempts are all you need as consumer to claim a new camera.
Any court will rule in favouir of the buyer of defective goods.

The moist damage claim also comes up with mobile phones.
It is often an excuse not to carry out repairs that are covered with warranty.

I give the buyer of tyhis K3 95% chance Pentax will decide to replace the defective camera with a new one.
They know thwey will loose this case in court.
Subsequently they are aware their poor attitude will foind ist way to other users through internet.
It will cost them a fortune in advertising to correct the damage.


Paul
Forum: Repairs and Warranty Service 12-10-2017, 10:56 AM  
A horrible customer service odyssey.
Posted By Fluegel
Replies: 41
Views: 2,795
Suppose you live in the part of Cyprus that is e member of the EU.
Than you can point at EU consumer protection that says the supplier of defective goods under guarantee must be given two opportunities to repair defective items.
Repair must be carried carried out within reasonable time.

The camera was too long with repair centers in Athens and Paris.
If any damage due to moist exists Pentax Greece should have reported that immediately.
Even if there is damage due to moist present now it can not be lead back to you as the person causing the damage.
The camera was too long time in Greece.

Drop Pentax a line pointing out EU consumer protection and mention you have been extremely patient.
Demand a new camera which Pentax is obliged to supply according to EU regulation.

Initial cost for a body is about 100 euro. Apparently saving 100 euro is more important to well paid after sales managers than keeping customers happy. That Pentax is obliged to compensate a buyer under EU law makes it even more of a disgrace.

Keep my fingers crossed you will get your new camera quickly.


Paul
Forum: Pentax SLR Lens Discussion 12-10-2017, 09:33 AM  
Macro lenses for landscape?
Posted By Fluegel
Replies: 57
Views: 4,084
If Pentax macro lenses perform well at that longer focusing distances or infinity it means performance at close range can be improved.
Forum: Pentax SLR Lens Discussion 12-10-2017, 07:26 AM  
Macro lenses for landscape?
Posted By Fluegel
Replies: 57
Views: 4,084
Perhaps a good time to experience what true macro lenses can do at close range?

MTF data from Zeiss show true macro lenses, meaning those with high IQ at close range are less usefull at infinity.
High resolution and low distortion at close range can only be achieved at the cost of less IQ at long distances and infinity.
A typical Carl Zeiss design for macro like the 120 S-Planar shows less than 0,2 % distortion at close range

I did not use the 100/4 K series macro lens I have for Pentax at infinity yet.
Maybe wait till I can put my hands on a prime non macro 100 mm lens to compare the results.

Paul
Forum: Pentax SLR Lens Discussion 12-10-2017, 12:51 AM  
Macro lenses for landscape?
Posted By Fluegel
Replies: 57
Views: 4,084
You can not beat physics, ever seen a square cirkel?
Only one of two can be optimum, long range or close range.

For marketing purposes manufacturers often compromise and make macro lenses usable for longer distances.
That does not mean they perform as well as well as lenses designed for that purpose.
Even Carl Zeiss moves from optimum macro qualities to more general purpose with their macro designs.

That is why I like Carl Zeiss Macro Planars 120 F5.6 from the sixties and seventies.
The later Macro Planar 120 F4 is a typical compromise.


Paul



Paul
Forum: Pentax SLR Lens Discussion 12-09-2017, 10:57 PM  
Macro lenses for landscape?
Posted By Fluegel
Replies: 57
Views: 4,084
It surprises me that even experienced photographers use macro lenses for landscape and other shots that focus at greater distances.

Non macro lens designs give best IQ at longer distances and infinity.
Macro lense differ. They not only allow focussing at close range, they hive best IQ at close range.
For objects at distances from about 2 m and more non macro lense give better IQ.


Surpring to find so many long range shots at reviews for macro lenses. That does not makes sense.



Paul
Forum: Welcomes and Introductions 12-09-2017, 07:52 AM  
New user from Germany
Posted By Fluegel
Replies: 8
Views: 429
Thanks Allen.

On the practical side: I am located in Europe.
Most items offered on buy and sell here tend to come from the US and Asia.
Importing from outside the EU is unattractive due to shipping costs and duty.
Evilbay is my main hunting ground now.

Unlike other 35 mm gear older Pentax lenses are still getting decent prices, even looks like prices are increasing.
That is a reward for staying with the same mount since the 42 mm era and great lens designs from the seventies.
With the APS sensor only the sweet spot from the lens is used giving excellent IQ.
Those lenses with less elements/groups are my favourites.

Talking about older gear: for wide angle nothing beats the Carl Zeiss Biogon design from Ludwig Bertele.
He calculated the Biogon lens with simple means in 1935 resulting in a near perfect symmetrical design.
Distortion is less than 0,1%. Solution exceeds most films.

Attached an image from a new powerplant. Camera/lens is Hasselblad 903SWC, recording medium Hasselblads 50 Mp digital back.
The back goes well with a 500C body from 1957 and 60 mm Distagon lens from the sixties. How is that for compatibility?
Can't help it, I like older quality gear amongst which I also count Pentax bodies and lenses from the seventies.


Paul
Forum: Welcomes and Introductions 12-09-2017, 04:25 AM  
New user from Germany
Posted By Fluegel
Replies: 8
Views: 429
Thanks for the warm welcome guys.

I am fond of the older Pentax lenses like the 100/4 Macro K series lens from the seventies I bought in Sweden.
Got it at an auction where I also bought a 1954 Supreme Wide Angle. That is the predecessor of the famous Hasselblad SWC.
Collecting and using early Hasselblad cameras is an addiction.

The 100/4 is sort of permanently attached to the K20d in the studio.
The second K20d body is dragged along the globe with the 16-45 F4 zoomlens.
Could not justify the extra $$$ for the 16-50 which is only one stop faster.
Build quality of the 16-50 varies. Early samples could be disappointing with low IQ.

The hunt is on for a nice 50/4 K series macro lens.
Slower lenses can de compensated for with extended ISO range.

With current modest prices for older Pentax DSLR bodies I feel like a child in a toy store.
Amazing what you get when searching on ebay for so little money.

Pentax cameras and lenses are very underrated.
Loaned my drag along camera to a lady friend whose Nikon kit was stolen.
She fell in love with the K20d body, suited her smaller hands much better than the lumpy N body..
In a couple of days she was used to the camera thanks to the clever software.

Canon is a bank, the company is loaded. Nikon is runner up to Canon but will allways be second best in number of sales.
Pentax deserves more attention than it has now.
Forum: Site Suggestions and Help 12-09-2017, 03:32 AM  
Question Marketplace
Posted By Fluegel
Replies: 3
Views: 364
Thanks Adam.

I can not contribute to the forum because I do not have Paypal or credit card.
In the old world (Europe) we rely on on money transfers, the safest way to pay.


Regards,

Paul
Search took 0.01 seconds | Showing results 1 to 25 of 27

 
Forum Jump


All times are GMT -7. The time now is 05:44 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top