The other thing we notice is change in exposure as we add extension tubes. Instead of 1:1, magnification is 2.5 times life-size! That’s pretty impressive! The MFD changes and magnification with macro lens are less apparent, unless we compare the full stack of tubes to the image without. These Kenko Extension Tubes are giving new life and function to an already spectacular lens! The first thing I notice is that at 200mm, adding extension tubes drastically reduces the MFD (from 37 inches down to 3.5 inches) whilst noticeably increasing the image projected on the sensor. Side-by-side comparisons of my LEGO photographer: 90mm on left and 70-200mm on the right: Extension Tube With the Tamron 90 macro, you can focus as close as 3.5” as well, but the gains in magnification are more significant as your’re starting off at 5” MFD. No takeaway here is you can change your MFD with the Tamron 70-200 from 24” down to 3.5” with a full stack of extension tubes. This chart shows all the technical details, which is part of the story. I had a ruler laid down to measure differences in Minimum Focus Distance (MFD). My methodology was as follows: Camera in Aperture priority at maximum aperture, ISO locked at 64 and Shutter speed variable. There is still some movement in the photos as it’s difficult to keep everything perfectly aligned at these working distances and adding/removing equipment. My favourite feature of the Alta Pro 2+ is the adjustable centre column – I could flip the column to horizontal and slide it fore and aft as I added extension tubes instead of moving my tripod or the set. The light output is consistent and they stay in place.Ī Vanguard Alta Pro 2+ Carbon tripod and Alta PH-32 pan head supported my Nikon D810. These are new to market and very useful for macro work. Kenko DG AF Extension Tubes are robustly constructed, which I feel is safer for my expensive camera and lenses, and they have the essential electronic contacts that allow Aperture, Auto Focus and Vibration Compensation, or Image Stabilization, to function as normal.įor my comparison, I used two Aurora Lite Bank C-LUX LED lights. This can make exposure a significantly more difficult. While you can find cheap, plastic extension tubes online, many of these don’t allow any electronic communication between lens and camera. They are camera mount specific – if you shoot Nikon, you need Nikon mount tubes. Like anything else in photography, there are a lot of options for extension tubes. It’s up to you to decide if it will work for your needs. The bonus is that you can focus closer! It’s almost like a macro lens, but as you’ll see – not quite. As soon as you add an extension tube, your lens will not focus to infinity. They move the available focus range closer to your sensor. There is no glass in extension tubes, so image quality and sharpness are NOT affected. For the Tamron 70-200, the focus range is from about 3 feet/1 meter to infinity.Įxtension tubes are a spacer that fits between your lens and your camera. This range is usually displayed on your lens. Lenses are designed to focus on your sensor plane – a lens will focus the light onto your sensor from any point between two set distances. Comparison images are attached so you can make an informed decision.įirst, a quick explanation of how lenses focus. For fun, I also put the extension tubes on the macro. In this article, I’m going to compare the results of using Kenko Extension Tubes with the Tamron SP 70-200mm f/2.8 Di VC G2 lens to using the Tamron SP 90mm f/2.8 Macro lens. Your thoughts quickly go to macro lenses, but there’s a growing trend in Wedding photography where macro lenses are being left at home in favour of Extension Tubes. PHOTONews has a focus in Macro photography this spring. It’s one of the best hobbies as the options and opportunities are endless. Photography is a wonderful world full of gadgets and toys, with a million and one ways to photograph anything and everything.
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