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Forum: Photographic Industry and Professionals 11-16-2010, 11:01 PM  
Professionals using Pentax :: Feasible?
Posted By FullertonImages
Replies: 48
Views: 12,485
Excellent work, John!

Great question too. Or even, are there any CaNikon pros who wouldn't be able to get the job done with CaNikon's top APS-C offerings?
Forum: Photographic Industry and Professionals 11-16-2010, 05:54 PM  
Professionals using Pentax :: Feasible?
Posted By FullertonImages
Replies: 48
Views: 12,485
I'm by no means an expert on optical science, but I'm pretty sure you're misinformed. So what you're saying is that if you took a 5D and a 50, and made an exposure at 1/125th, f/5.6, iso200, then put the lens on a 40D, and made the exact same exposure, that the 40D photo would be 1 stop less exposed?

Yes, the same amount of light enters the lens, and yes part of that light doesn't hit the sensor, whereas it would have on a FF sensor. But, the light that isn't hitting the sensor is the same light that isn't part of the image anyways. The smaller sensor is cropping out the center of the image, and it's that cropped out light, which isn't part of the recorded image anyways, that isn't hitting the sensor. The amount of light at the pixel level is the same on either chip. The FF sensor isn't recording more light per pixel sight, it's recording more light in general because it's recording more image. Of course I could be wrong.

Anyone else want to chime in on this?
Forum: Photographic Industry and Professionals 11-16-2010, 09:21 AM  
Professionals using Pentax :: Feasible?
Posted By FullertonImages
Replies: 48
Views: 12,485
I think you mean that DOF isn't the same between aps-c and FF. Aperture is always the same because it's a mathematical relation. f/2 on a 50mm will always be 25mm in diameter, and will always let the same amount of light in, but how that 25mm render the DOF depends on the sensor size that is looking through it.

But you're right. There are many lenses in FF systems that just flatout don't exist as options for us aps-c shooters. Not only talking about canikon shooters within their own systems not have equivalents, but more so, us Pentax shooters not even have the FF lenses to begin with, let alone aps-c equivs of them. The ones you mentioned come to mind, and the 200/2, and 24/1.4 also.

Not only do we not have those lenses, but they wouldn't be the same on our cameras anyways. In order to get the equivalent look as a 24/1.4 we would need a 16/1.2; for a 85/1.2 we would need a 125/1.0 and for a 200/2 we would need a 135/1.4. These are all lenses that it is pretty safe to say will never exist. And if they did, they would be massive and extraordinarily expensive.

I'm far less attached to FF, in and of itself, than I am of certain angle of view/DOF combinations. The other advantages of FF are becoming less, with the growth in sensor tech. But the optical advantages will be hard to overcome.
Forum: Photographic Industry and Professionals 11-14-2010, 10:00 AM  
Professionals using Pentax :: Feasible?
Posted By FullertonImages
Replies: 48
Views: 12,485
I've been watching this thread for a while, wanting to jump in, but I've been too busy (with professional photography...). So here we go.

It is absolutely possible to be a professional photographer with Pentax. I am one. I've been making a full time living for the last 2 years with Pentax gear. The majority of what I shoot falls into the outdoor/adventure sports category, and I not only think that Pentax is capable for professional photography in this realm, but I would go as far as to say that it is the best brand for this type of shooting. I know that is a bold statement.

I was already of the persuasion with the K-7, even thought it had some significant down falls in regards to other brands' offering. But I thought that when it all balanced out against what I do, it still came out on top. But now with the advent of the ultimate image quality of the 645D, and particularly the downright amazing K-5, I'm even more resolute about my gear choice and making such a bold statement. The K-5 kept everything about the K-7 that already made it such a strong outdoor/adventure contender and replaced all it's weakness with features that are on par with or beating it's class competitors. If I had the chance to start all over again with any system, and no current investments made, I would still choose Pentax again all over again. Hands down.

There are certainly a few things I would like too change or add about the system. But no matter what system you're in, you'll get that. I would like to see a more full professional grade prime lens offering, particularly a fast normal equivalent, pretty fast ultra-wide, a 135mm f/1.8 and a 500mm or 600mm f/4. I would love to se the sync speed up with the competition. The Af tracking is greatly improved, but there is still some room for improvement. Although, it is currently on par with the D7000 and 60D, so it's where it should be for it's class. I think in the next 12-24 months, there is absolutely room for another camera above the K-5. Something that is just balls out pro, and on spec to compete with the D3 and 1DmkIV, even if it is still aps-c, which I would be fine with.

I have little to no desire for FF. If it was offered, would I buy it? Most likely. But I'm fine without it, and if it never comes, I won't be overly disappointed. I care far more about functionality than format.

So all this to say that yes, it is very possible to be a working professional wih Pentax. And no, I don't think you'll be disappointed if you start heavily investing in to the system. In the last 3 years, Pentax has shown nothing but very impressive growth and technological advancement. Going from cameras that were always just a few too many months late to be cool and were always getting overshadowed by the competitors, to cameras that would just about on par to play with the big dogs equivelent, to a camera that is arguably the best aps-c camera ever.
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