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Forum: Pentax SLR Lens Discussion 09-15-2017, 09:07 AM  
Full Frame Wide Angle Lens List--20mm and Under
Posted By lpfonseca
Replies: 86
Views: 6,089
What about the Tamron 17-35/2-8-4 Di?
I don't know if you can find it new but show up used now and then.
I havent tried mine with film (and don't have the K-1... yet!) but works fine with my K-5.
Regards,
Luis
Forum: Pentax SLR Lens Discussion 11-08-2016, 08:49 AM  
Pentax 70-200 on Ebay - why so cheap? Looking for one for the K1.
Posted By lpfonseca
Replies: 29
Views: 2,117
Yes, the Tamron AF 70-300 Di will work with a Pentax K-1. It works fine with my K-5 and my Z-1p.
Forum: Pentax Full Frame 06-15-2012, 03:11 PM  
Pentax full frame rumour
Posted By lpfonseca
Replies: 1,039
Views: 120,505
Wow, not having to waste time in travel, now this could improve my photography skills. :lol:
Forum: Pentax News and Rumors 06-09-2012, 02:41 PM  
new lens patent of pentax
Posted By lpfonseca
Replies: 85
Views: 11,390
I think so too. In my opinion the target for K-01 is the Canon G1X. But it need a collapsible zoom lens so that the size remains contained.

Compare Canon G1X and K-01 dimensions side by side

This zoom could turn the K-01 into a very interesting "large pocket" camera.
Forum: Photographic Industry and Professionals 06-07-2012, 02:54 AM  
why people buy canikon
Posted By lpfonseca
Replies: 32
Views: 4,399
Me too. Damn, I'm feeling conformist. No, wait! My SLR was a Minolta. I feel better now. :D
Forum: Photographic Industry and Professionals 06-07-2012, 02:50 AM  
why people buy canikon
Posted By lpfonseca
Replies: 32
Views: 4,399
Indeed. I guess that like you I took the wrong (was it really?) pill. Going with the flow makes life easier but it's so much duller.



Not really, just like many Canikon users aren't conforming with a group. They choose according to their needs that happen to be similar to others. I choose my first DSLR (a K10D) after looking at what was available at the time. The K10D was comparable to the Nikon D80 but less expensive and with SR. And look at pros (the ones that shoot photography for a living). Like mtansley said,



they need certain services and equipment availability to work so choosing a brand that provides that is natural. A photojournalist using a Pentax would have trouble replacing broken equipment during the job.

The video is about those who buy a camera (car, phone, clothes, etc) to be like their neighbors without thinking. And that represents a significant part of the market share.

A friend of mine has a Sony DSLR that she won and she believes that her photos would be better if she had a Caniikon just because she sees better photos from others that use Canikons. If everybody does one thing it must be the best thing to do. It is the same with religion, politics, economy, etc.

Regards,
Luis
Forum: General Talk 06-06-2012, 04:59 PM  
The new competition in Health Care
Posted By lpfonseca
Replies: 11
Views: 900
If this is the case I apologize for my lack of ironic detection skills since I usually stay away from political fora. :o

Nesster, I'm sorry if I misunderstood you.

Regards,
Luis
Forum: General Talk 06-04-2012, 03:42 PM  
The new competition in Health Care
Posted By lpfonseca
Replies: 11
Views: 900
Nesster, it seems you fail to see the main difference between health care and american football.

The fact is that US is the country in the world that spends more (either in % of GDP and in USD per capita) in health care without great results. In Portugal where we have a national health system (somewhat based in the UK's NHS) we spend one third of what US spends with similar, and sometimes even better, results. (disclaimer: it is so extremely complicated to compare health systems that WHO stopped doing it's ranking)

Anyone that as studied health economics knows that the reason is that the health market is not ruled by economics market laws. There are way to many failures in the information parity for the player to act knowledgeably. The doctor knows what the patient problem is and the patient doesn't while not knowing how much the patient is willing to pay. That's why there is need for the agency function regulated by and independent party (the state).

Health care is a very complex market. For example: why should you pay for the treatment of someone else's TB? Easy, you don't want to get infected too. And why should you pay for cancer treatment for your neighbor? It's called risk sharing, no one can be sure that he won't have cancer but the treatments are so expensive that will ruin most family's economies but sharing risk means that will cost very little to each one.

Private insurances are great until you get really sick and need spend huge amounts of money. If you break a leg or need new glasses all is fine but treatment of hemophilia can cost millions of dollars over the life time of a patient, specially while they are kids. Should one let the kids die? What if they where your kids?

It is funny when people hide behind politics to give opinions when they haven't studied the question deep enough. Most of the critics of "obamacare" have absolutely no idea what they are talking about. (well, I guess most of defenders don't know either)

Please don't take it from me, go look at WHO and OECD data! It is all there.

Regards,
Luis
Forum: Welcomes and Introductions 06-04-2012, 12:01 PM  
Hello from Portugal
Posted By lpfonseca
Replies: 3
Views: 342
Welcome to the forum but most important welcome to Pentax. Indeed we live in a Canikon country but so does the rest of the world. So don't worry and enjoy your new K-5.
Forum: Pentax K-30 & K-50 05-22-2012, 01:17 PM  
K-30 vs. the Nikon D3200
Posted By lpfonseca
Replies: 83
Views: 37,619
Why? What are you hoping to do with the few extra megapixels?
Forum: Photographic Technique 04-22-2012, 03:45 AM  
My SMC Pentax 50 1/1.7 conversion to macro lens
Posted By lpfonseca
Replies: 18
Views: 2,675
I admit that DIY might be fun but some chinese macro extension tubes from eBay would have been even cheaper.
Have fun,
Luis
Forum: Troubleshooting and Beginner Help 04-21-2012, 04:22 AM  
Nikon>Pentax adapter for a toy lens not avail in Pentax?
Posted By lpfonseca
Replies: 23
Views: 4,291
An used Nikon F55 is so cheap on ebay that you could get one just for those lenses.

Have fun,
Luis
Forum: Pentax DSLR Discussion 03-06-2012, 03:59 PM  
Know any autofocus (laboratory) tests?
Posted By lpfonseca
Replies: 6
Views: 970
Which one?

The one from Fnac Labo (Tous les dossiers du Labo - Labo Fnac) or the one from the french magazine Chasseur D'Images (here in english http://nedbunnell.posterous.com/chasseur-dimages-reviews)?

Regards,
Luis
Forum: Pentax News and Rumors 03-03-2012, 05:36 AM  
CP+ show 2012
Posted By lpfonseca
Replies: 96
Views: 11,986
Sorry to inform but polimers are here to stay. Since then polymers have evolved a lot. Think about carbon fiber tripods. Even carbon fiber bycicles are available today.

Aparently those "stupid guys from Volvo" where on the right track, just like some other "stupid guys" like Da Vinci when he designed the chain.

Polymers can be extremely resistant and a lot less expensive than metal. Newer polymers will replace most metallic parts eventually.
Forum: Pentax K-01 02-21-2012, 03:19 PM  
Opinions of the K-01 from outside the bubble
Posted By lpfonseca
Replies: 259
Views: 25,406
Just my opinion...

I really like it the yellow K-01 but is missing a couple of things to be a hit:

1) optional viewfinder (I guess someone already noticed it :)) - please Pentax/Ricoh make a viewfinder that connects to HDMI port, can't be that hard.

2) one lens that competes with Canon G1X in size Compare camera dimensions side by side

So they are so close to being an excellent option as a compact alternative to a DSLR. Could atract many DSLR users to k-mount.

Regards,
Luis
Forum: Pentax Full Frame 10-18-2011, 02:00 PM  
Pentax Full Frame - An official statement from Pentax (they listened!)
Posted By lpfonseca
Replies: 3,121
Views: 314,749
I totally understand you. I'm in the same boat. Lots of FF lenses and a only a few APS-C ones but a 21% wages cut will put a FF body out of reach.
Forum: Pentax Compact Cameras 10-16-2011, 06:45 AM  
Kid friendly camera
Posted By lpfonseca
Replies: 10
Views: 2,351
Just have a look at:

'Compact Waterproof' Camera Group Test (Q3 2011) Review: 1. Introduction: Digital Photography Review

For a 3 year old a Fujifilm FinePix XP30 should be enough.
Forum: Visitors' Center 09-29-2011, 03:14 PM  
Manual em portugues para Pentax K7
Posted By lpfonseca
Replies: 4
Views: 2,355
I've never seen a manual in portuguese but here is the spanish one:

http://www.pentaximaging.com/pdf/K-7_Manual_Spanish.pdf

It may help.
Forum: Visitors' Center 09-29-2011, 03:08 PM  
a foto da pentax optio m30 sai tremida
Posted By lpfonseca
Replies: 1
Views: 929
Olá Angélica,

Sorry guys but I'll continue in portuguese since I don't know how the translator works.

A informação que dás é muito vaga mas aposto que estás a tentar fotografar dentro de casa ou à noite. Com pouca luz a máquina tem de receber luz durante muito tempo o que faz com que as imagens fiquem tremidas.

Se estás a fotografar algo imóvel usa um tripé ou poisa a máquina numa superfície estável. Ao segurar na máquina transmitimos sempre algum movimento pois nunca estamos absolutamente imóveis.

Se estás a fotografar algo que se mexe (por exemplo pessoas) tens de aumentar a luz disponível (usando o flash se a distância for pequena, por exemplo) senão os objectos em movimento vão ficar arrastados.

Espero estas sugestões ajudem.
Forum: Pentax News and Rumors 06-05-2011, 07:59 AM  
New Tamron lenses in Pentax mount?
Posted By lpfonseca
Replies: 36
Views: 15,357
What's wrong?
Forum: Digital Processing, Software, and Printing 05-26-2011, 02:05 PM  
Freeware alternative to Lightroom?
Posted By lpfonseca
Replies: 38
Views: 16,876
You could try Rawtherapee (version 3 is coming soon).
Regards,
Luis
Forum: Pentax News and Rumors 04-19-2011, 01:56 AM  
Camera Market Share
Posted By lpfonseca
Replies: 44
Views: 11,735
There are no crisis in percentages unless there were no cameras sold.

The total percentage will allways be 100.

I don't think Hoya even looks at this numbers as they are a sum of several markets that they are approching with diferent strategies. They are looking at absolute growth, profitability and things like that.

Have fun,
Luis
Forum: Pentax News and Rumors 02-19-2011, 10:30 AM  
Samsung NX Getting More Serious
Posted By lpfonseca
Replies: 49
Views: 14,497
I know it's a little far fetched but what if Hoya/Pentax release a EVIL camera compatible with Samsung mount?

They have worked together before (Samsung GX cameras, Samsung sensor).

It could be good for both companies.

Have fun,
Luis
Forum: Pentax SLR Lens Discussion 02-14-2011, 02:57 PM  
Vivitar 400mm f5.6 is it worth $100.00??
Posted By lpfonseca
Replies: 14
Views: 7,144
I don't know if the lens is any good but looking at your equipment I would say: what are you waiting for?

100 USD can't be that much for someone who spent what you've spent on glass. And if you don't like it you can sell it without a great loss.

Have fun,
Luis
Forum: Pentax News and Rumors 02-12-2011, 02:19 PM  
K-5 tested in Popular Photography
Posted By lpfonseca
Replies: 26
Views: 9,108
Well, the K-5 is as fast at EV 0 as K-7 at EV 2.

At EV 2, the K-5 takes 0.87s that compares to 1.18 for K-7, 0.59 for Canon 60D and 0,76 for Nikon D7000.

With lower light Pentax starts to lose a lot o f time but down to EV 2 it compares well. It is the slowest but not by much. A good improvement by Pentax.

Have fun,
Luis
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