Get a basic hold on some math and then go get those moments!
Introduced back in September 2016 alongside the OM-D E-M1 Mark II, Olympus unveiled one of the newest members of their Zuiko Pro family of professional-grade lenses, the 12-100mm f/4 IS Pro.
It stands side by side with anything I ever shot with my D3 and I’d say it’s a hair sharper than my 5d2 images. I love the bokeh in your pictures,” that’s a pretty good sign that they don’t know what they’re talking about. Well, Tony Northrup recently made a video going deep into the differences of sensor sizes in respect to aperture values, ISO, etc. Some of the points he’s made have been hotly contested. Also check out Gregory Crewdson’s work and the documentary about his process.
There’s how much focus falls off then there’s it falls off. Are they equal focal lengths when you start putting them on different sized sensors? Look, I’m not going to say he’s right or wrong on all of his points about sensor size and aperture and ISO values.
All of these images were shot from the same distance and all were shot at f 2.8.
Here we have three shots that are basically the same frame shot with three different focal lengths and you can clearly see the difference in the depth of field.
This extremely versatile zoom lens trades the brighter f/2.8 aperture of its shorter cousins, the 12-40mm f/2.8 and 40-150mm f/2.8, for a constant f/4 design in an easy-to-carry, all-in-one solution spanning a 24-200mm equivalent focal length range, and with built-in optical image stabilization to boot.
Olympus has been on a serious tear recently, releasing a number of highly-praised lenses, especially with regards to their growing Zuiko Pro series.
The Panasonic has a 2.0 crop factor compared to a full frame camera like the D3. We go from an 85mm lens to a 56mm lens to a 42.5mm lens.
Where things start to get confusing and is the topic of many a debate on forums is focal length of lenses and equivalent focal lengths in regard to crop sensors and all that. The only other thing we have to look at is focal length and sensor size.
Let’s look at three different sensor sizes and their equivalent lenses that would give the same field of view. The equivalent field of view lens on a 1.5 crop factor Fuji is the 56mm. Which one has the most effect on the changes in depth of field?
Then I pulled it out on jobs from time to time because I loved that little camera. My Phase One medium format images were the only images that had a noticeable change in quality when I looked at everything side by side. When I jumped to full frame sensors they were far better in terms of image quality than the crop sensors of that time. NOTE :: I’m not talking about tilting and/or shifting the lens or film to move the plane of focus. I’m talking about how an area of an image comes into focus and then falls out of focus.
Then I started putting the Q&A book together and I had the chance to run pages of test prints for the book. My Fuji images ran side by side with D3 and 5d2 images without a single noticeable drop in quality. The thing that made me stop and stare though is the focus falls off. Cheers, Zack A full time commercial and editorial photographer, Zack shoots everything from bands to CEOs to ad campaigns.