September 20, 2011

by Gavin Seim: Anyone can learn to use a camera to capture snapshots of time. That’s valuable for history and for precious memories. But it takes more to be a skilled photographer. Not just a picture taker, but a picture maker.

It takes tireless study, practice and long experience. I contend it’s no easier than being a sculptor or a doctor. A lawyer, or a painter. It requires being a skilled technician, a craftsman and a creative director. It’s neither fast or easy. But it’s one of the most rewarding skills one can study and master.

But that’s just my opinion. So I’ve scoured websites, videos, books and even picked up the phone for thoughts about photography from many of the renowned masters of it’s history. Thoughts that seem resound it’s ever alluring call. Reminding us to return to the basics of what makes a great photograph and perhaps to remember, that digital is just a baby next to more than a hundred fifty years of photographic history… Gav

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  • “The whole key lies very specifically in seeing it in the minds eye which we call visualization” – Ansel Adams
  • “If continually people look and look and always come away enriched, then it’s a great work” – Sister Wendy.
  • “If I have any ‘message’ worth giving to a beginner it is that there are no short cuts in photography.” – Edward Weston
  • “The sheer ease with which we can produce a superficial image often leads to creative disaster.” – Ansel Adams
  • “Tone” may be the least understood, and least utilized factor in composing and finishing images” –  Ken Whitmire
  • “A portrait is not made in the camera but on either side of it.” – Edward Steichen
  • “You don’t take a photograph, you make it.” – Ansel Adams
  • “It’s one thing to make a picture of what a person looks like, it’s another thing to make a portrait of who they are.” – Paul Caponigro
  • “Becoming a professional artist takes talent and perseverance, even more so when the field is photography.” – Clyde Butcher
  • “Never put lettering in your photos unless you want it read.” – Jay Meisel
  • “Sometimes I do get to places just when God’s ready to have somebody click the shutter.” – Ansel Adams
  • “In photography there are no shadows that cannot be illuminated.” – August Sander
  • “If you have enough craft, you’ve done your homework and you’re practiced. You can then make the photograph you desire.” – Ansel Adams
  • “No place is boring, if you’ve had a good night’s sleep and have a pocket full of unexposed film. – Robert Adams
  • “A photograph is usually looked at – seldom looked into.” – Ansel Adams
  • “Saturate yourself with your subject and the camera will all but take you by the hand.” – Margaret Bourke-White
  • “We have glorified the camera itself. Which is only a tool.” Ken Whitmire
  • “Photography is the power of observation, not the application of technology.” – Ken Rockwell
  • “There are two people in every photograph: the photographer and the viewer.” – Ansel Adams
  • “A sloppy performance in a photograph is as distressing as a sloppy performance in music.” – Fred Picker
  • “Be aware of every square millimeter of your frame.” – Jay Meisel
  • “We are basically directors of images. Our objective is to attract the eye and leave an impression the mind.” – Ken Whitmire
  • “There is nothing worse than a brilliant image of a fuzzy concept.” – Ansel Adams
  • “No photographer is as good as the simplest camera. – Edward Steichen
  • “A better camera won’t do a thing for you if you don’t have anything in your head or in your heart.” – Arnold Newman

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February 25, 2011

by Gavin Seim: Updated 11/22/12. There’s a lot of confusion out there about resolution as it relates to making prints, so I want to help clear it up. I make mostly large prints and spend quite a bit of time studying factors that effect my image quality. Often I use a 5D MK II, which is 21MP. I also use 4×5 film because of it’;s vastly higher resolution. It scans in at closer to 200MP. But to start with lets use an average 18MP file as our example.

First let me say that digital has a long way to go in terms of resolution. Today’s camera’s are amazing, but lets get a perspective. Ansel Adams did much of his work on 8×10 sheet film. It’s hard to compare film to digital exactly, but using a good film he probably would have had a rough equivalent of around 400 million (mega) pixels. This makes our digital cameras look pretty paltry at times and it’s one of the reasons I’ve started working with 4×5 film for some of my projects, as it can give me  200+ effective megapixels when scanned (more of that on my pictorials website).

Say we have a full size file from a Canon 7D. The resolution of that file would be 5184×3456 pixels. About 18 mega pixels (roughly 22x less than that 8×10 film). Our file comes in at just over 11 x 17 at 300 PPI. Note that PPI and DPI refers to Pixels Per Inch or Dots Per Inch (a printing term). For today’s purpose I’ll refer to it as PPI as it’s becoming the more common term.

First and foremost, PPI and actual file resolution (or pixels) are not always the same. For example I could take our file in Photoshop and set the size to 30×20. Unless I told PS to Resample (or increase the resolution) of the file, the computer would now see this file as a 20×30. Only now it would show as being just over 172 PPI instead of 300 because the pixels have not changed or increased, which means there must be less pixel per inch when printed at that size – It’s still an 18MP file. I’ve just told the computer it’s larger in physical print size. What really matter however is if you have enough overall resolution. Here a screen capture to show how I was changing PPI. The PPI on each is different, but the pixel quantity is the same.

So what if I printed this file as a 4×6. I’m not sure why I would want a print that small (see the wall portrait article), but bear with me. At 4×6 our 18MP file would print out at just over 860PPI if we left it at full resolution. That’s a lot since most human eyes can’t see any difference above 300PPI. Bottom line, my file has more than enough pixels. Printing with that extra PPI won’t hurt anything. Though depending on the printer, all that information may not be used.

Why does all this matter. Well mainly so you don’t get confused. PPI has relevance in sizing and printing because it can quickly tell us something about how good our print will be. That brings us to larger prints and how this all relates.

Click for larger view – Gavin’s 30 inch canvas, Bull of the Mist. This a medium sized print. Taken in early morning at ISO 3200 made the detail on this slightly less, but it was needed for shutter speed. As you can see, the detail is good, but not flawless. The canvas helps give it an organic art feel. This was made from a file that was 5464 x 2732 pixels. It was up converted to 9000px wide before print. More about this image here.

Resolution VS Large prints.
This is where things get subjective. I’ll speak from my own experience as I regularly produce prints 40 inches and beyond. With our 18MP file we know we have plenty of information for a baby print. What about a serious print meant for the wall. Lets look at that 20×30 again. Lets go into the “Image Size” box of Photoshop and changing the file dimensions to 20×30, without altering the resolution as I did above. I left Resample un-checked which means I changed the print size but not the amount of pixels in the file. We’ll now have 172PPI at a print size of 30×20. Are you getting it? This is telling us how much information we have to lay on paper in terms of real life printed pixels – 172PPI is not bad. Most peoples eyes can probably see a bit more detail than that, but the print should still be good.

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