A Simple Explanation On How Aperture Impacts Depth Of Field (And Why Pinholes Are Always Sharp)

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There is a Seinfeld episode where George loses his glasses, yet he is able to spot a coin on the floor by squinting. Without knowing the team at Seinfeld made a very elegant scientific experiment comparing lenses to pin holes.

A Lens makes things sharp by focusing rays of light coming from a source so the rays converge on a single sport.

A pinhole, on the other hand, only allows light to enter from a single direction thus not letting it blur.

Both aspects are very clearly explained in this video by MinutePhysics.

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Is Depth Of Field Affected By Focal Length? A Practical Test

The fact that the depth of field varies depending on focal length seems pretty straightforward, doesn’t it? Matt Granger however says that wide angle lenses don’t necessarily have a smaller depth of field when compared to longer telephoto lenses:

To understand any of this, you have to know what depth of field is: (Yes, this is very basic) Depth of field is basically the depth of your image that is in sharp focus, it is usually about 1/3 in front of your focus and 2/3 behind it.

In his video, Matt conducts a test to prove his point: He takes the same shot with the same framing and only changes the focal length and the position of the camera. The aperture was kept the same – f/2.8 – throughout the shoot. Of course when changing the focal length of your lens you’ll have to physically move the camera if you want your final result to have the same crop.

Here are the results:

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Watch The Technology Under The Plastic In Nikon Lenses

We know that lenses are some of the most innovative piece of technology around. It actually quote surprising how much technology one can cram into what once was “just a piece of glass”. But today’s lenses feature so much tech and innovation that it is scary. This promotional clip from Nikon Asia shows how each of the different lens technologies look like once you take the lens shell away and look inside it.

The music is horrible, but it gives some great understanding on how a lens actually works, including some insight into the VR mechanism.

[NIKKOR Lens Technology via iso1200]

Understanding Full-Frame vs Crop-Sensor Impacts on Depth-Of-Field And Perspective

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There has been a lot of discussion going on about what are the impacts of using a crop sensor vs full frame when using a particular lens. How are crop factor sensors impacting depth of field and what are they doing to composition. In fact if you went to any photography forum on the web, you are likely to get as many answers as forum members.

Of course, the answer to that question really depend what you are comparing and how you are doing your tests. Photographer Neil van Niekerk did a thorough test accompanied with clear explanations on what actually makes a difference when using a crop sensor vs a full frame and  the answer is not that simple.

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Nikon Announcement – The D750 Is Coming And It Looks Promising

Nikon announced today the release of it’s latest edition the D750, a FX format DSLR that is aimed at the serious enthusiast and advanced amateur crowd. Taking a look at some of it’s features, and $2300 price point, the D750 could be the camera a lot of photographers have been waiting for. It takes the impressive video capture capabilities of its slightly more sophisticated colleague, the D810, and combines it with a compact size and tilting LCD screen that’s appreciated by hobbyists.

The D750 is currently available for pre-sale with or without a 24-120mm f/4G ED VR AF-S NIKKOR. Read on for full specs, photos, and video of the new DSLR in action…

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Samyang Adds A 12mm 1:2.8 Full Frame Lens To Their Line Of Wide Prime Lenses

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If the Zeiss Otus can be described as superb quality at a superb price, Samyang (known as Rokinon in the US) can be described as Good quality at a good price. This a reason that many choose those lenses as go to lenses when starting out and looking for decent quality primes and wide angles.

Today, Samyang announced the addition of a new lens to their arsenal: The Samyang 12mm 1:2.8 ED AS NCS. This is an Uber wide lens, with a 180˚ field of view on a full frame  sensor and a 118˚-124.6˚on APS-C.

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The Zeiss Otus 85/1.4 – A Lens Made For Portraits With Strong Wallet-Impact

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Looks like Zeiss engineers are finally allowed out of their basements after completing (and launching)  the Loxia lens line last week and releasing a new Otus today.  Just a few minutes ago, Zeiss announced the release of a new Otus family lens – the Otus 85mm f/1.4. This is the second high end Otus lens after the ZEISS Otus 1.4/55.

The lens, classified as a short telephoto, should be an optical marvel. According to the press release:

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How To Convert Scrap Flooring Into A Lens Drawer

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Over the last week or so, I moved into a brand new office. It used to be a print house, so the floor was tainted beyond repair. (we actually took some floor tiles off and they had ink on the bottom). So we covered the entire thing with laminate flooring. Now we had some tiles that we cut in the wrong lengths spare flooring ,which was great because I needed something to put my lenses in. And so was invented the laminate flooring lens drawer.

The idea is quite simple – place all my lenses in a drawer but still maintain some order and safety, and not have them roll onto each other. This really quick step by step tutorial will show you how it was done.

I was using a 5 drawer IKEA ALEX unit, but the same thing probably applies for every other drawer unit in the world.

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Why Leaf Shutter Lenses Matter

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Have you wondered how something as simple as a lens design might shape your approach to off-camera lighting? And what if that same lens could shape how light is recorded within a camera? Add to that this bonus: this same lens might take what you already have and make it four times more effective?

We are approaching an era where camera sensors and mega-pixels no longer matter and the darling of the off-camera lighting world isn’t what you might guess.

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Sony Set to Introduce New Interchangeable Lens Mount for Smartphones

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According to SonyAlphaRumors, Sony is preparing to announce another addition to its line-up of professional lens mounts for smartphones. This time, however, the new mount allows you to switch out between the lenses offered on their E-Mount line.

“These are the first pictures of the ILCE-QX1 E-mount camera. The third QX camera after the QX10 and QX100 (here one Bay). But unlike the other two this hasn’t a fixed lens but is an E-mount module. It has an APS-C sensor (not sure yet but should have the same great A6000 24MP sensor with fast af), built-in flash, costs 300 Euro body only and 450 Euro with 16-50mm lens.”

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