Showing posts with label photo. Show all posts
Showing posts with label photo. Show all posts

Monday, May 18, 2009

Pentax 50-135mm f2.8 DA*

So I finally broke down and went with the Pentax long zoom after spending months agonizing over the choices. In the forums I have read that many people have had focus problems with the Pentax cameras and both the Sigma and Tamron long/fast zooms (70-210 f2.8). I debated the merits of manual focus vs. autofocus. Finally, I found a very good deal on the 50-135, and the Pentax brand won out.

The win is very well deserved. After just a few tens of pictures, I can tell you without any reservation that the lens I have is ridiculously sharp and contrasty. It focuses much more quietly than the 'screw drive' lenses, but certainly not much faster. Its focus is, however, both more accurate and more sure than any other autofocus lens I own. It's also the sharpest zoom lens I own, even approaching the image quality of my Tamron 180 f2.5. It's definitely as sharp as my old Pentax-M 135 f2.8 (which I shall be selling on ebay soon, as a result).


The inset here should give you some idea of the resolution this thing exhibits. It's visually indistinguishable at 2.8, as well - wide open! The corners are slightly less sharp at 2.8, but by f4, I can't see any visible difference between the center and the corner. I'm sure there's a measurable difference, just not an obviously visible one.

The lens isn't very heavy as such lenses go - certainly nothing like its 70-210 brethren in size or weight. It handles well and fast, and on the APSC-sensor'ed Pentax K20D, it's comparable to the 70-210 type lens on a full-frame camera. It's also weather-sealed to match the K10D/K20D, so you can go out in the rain and shoot pix... I'm not that brave, but it brings me some solace in case I get caught out in the rain.

I like the lens so much, I'm thinking about selling off a bunch of other stuff so I can get the 16-50mm f2.8 sister lens to complete the pair.

Sunday, May 17, 2009

Peony

Peony
Originally uploaded by jstevewhite


There's an ant in the very center of this peony. We've got a bunch of 'em (peonies, not ants) in a small, rock circle in the front yard.

Woot! Got my Sigma 18-50mm f2.8 back from repair. Took 'em a month, but they seem to have done a very good job. It's not quite as contrasty as the 24-60 I sold my cousin, but it's pretty sharp and contrasty enough. It's the first lens I've bought that was targeted specifically at APSC sized sensors - I sure hope that the DSLR Pentax is supposed to release soon isn't a full frame unit!

My lens lineup is nearly complete; I'm only missing a good long zoom and a really long telephoto. I'm considering a pair of old Tamron lenses - the 19AH 70-210 f3.5 is a great long zoom, being only half a stop slower than the 2.8, but a fraction of the price and weight. Macro on the 19AH goes down to something like 2.5:1, also.

The other Tamron lens I'm thinking about picking up is the 500 f8 cat. On my APSC sensor-ed K20D, that should behave like a 750mm! I had one for a while for my film cameras, and it was fun, but not flexible enough. I think on the K20D, with the autoISO feature, it can be much more flexible. I'm pretty sure it will work in AV on the K20D, too. I know those lenses are very sharp. I also have the 1.4x SP teleconverter from Tamron - that would make it behave like a ~1200mm f11... bright sun only, but wow, talk about a 'reach out and touch something' lens!

Sunday, April 19, 2009

iPhone Experimentation


My brand-spanking-new Sigma 18-50mm f2.8 is away at Sigma getting fixed, and I've been jonesing for it. So yesterday evening I was out in the yard with the daughter, and I snapped a couple of images with the iPhone. This made me think about the whole gear vs talent debate. Is it really the hardware? Are good images actually good images by dint of the proper exposure and sharpness and color reproduction? Or is there some ability, talent, training, or what-have-you that translates into "photographer"?
I know where I stand on this debate; same place I always have. Art is, by definition, opinion. It has always been opinion, and it will always be opinion. There's no chart that discerns Art from more mundane products of human effort, no hard-and-fast yardstick by which we can measure artistic integrity, beauty, or talent. I have always main
tained that if a man says what he does is Art, then I must, in good faith, accept that it is Art. I may then discern only whether or not I appreciate it as art. I can argue that it is bad art, or that it is good art, and I can certainly argue for or against it, but I cannot in any reasonable manner proclaim that it is not art.

Ultimately the things that are judged to be great art by history are those which hold the fancy of society over a great period of time. This is what separates a fad, a fashion, from a great work of art. It's not simply that people like it; it's that people like it beyond its contemporary milieu. If someone is humming "Eleanor Rigby" one hundred years from
now, I think it will be safe to say that The Beatles created great music, not just popular music. If someone regards Jackson Pollock's work with reverence in the year 2100, I will stand corrected.

How does all this relate to the hardware vs. talent debate? Well, it's because these things make it painfully obvious to me that cameras are tools, just as paint brushes and guitars and chisels are. They create nothing without an actor, without a spark, and ultimately their record is not a mere collection ofpixels, but a record of the intent - however whimsical - of the photographer, whether that photographer is Robert Mapplethorpe, Leonard Nimoy, or your old aunt Jeanie. That image is art. Good art, bad art, nonsensical art, ridiculous art - but it is art.

The modern digital camera has certainly democratized photography in a way nothing else has. Now anyone can have their own digital darkroom for a ridiculously small quantity of money, and the cost per shot has plummeted. Thus, almost anyone can produce a few good photographs over time by sheer numbers. The shotgun approach, if you will. Take enough pictures, point that camera at enough things, and a few are bound to be worth noting. This is a good thing, not a bad one. It does have the unfortunate side effect of making many who have created such 'lucky' images believe that it's simply having the right hardware, because they didn't put any effort into the image. Let's face it; you can't accidentally draw a wonderful charcoal rendering of Mt. Rushmore, but it's quite possible for events to conspire in your behavior as you record exactly the right light and composition as you pop off your seven-hundred and twenty-fifth vacation picture.

No matter how you cut it, though, I hold to my mantra, in every aspect of life. If you give a tool, no matter what quality, to someone with talent, the result of its use will be better than that of someone with no talent. Sounds generic, I know, but it is generic. Just for photographers, though: If you give any camera to a talented photographer, and the same camera to your Aunt Jeanie, when the memory card is full, the pictures from the photographer will be visibly better images. Now, better Art? Only time can answer that question.