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Tag: macro lenses
09.10.2013

Macro Photography: How Sensor Format Affects Image Depth of Field

© 2013 Robert OToole Photography | Lens: Sigma Macro 150mm F2.8 EX DG OS HSM |  Camera: NIKON D800E | ISO: 100 | Aperture: f8 | Shutter speed: 1/250 sec | single SB-R200 flash. This flower was framed in the viewfinder with a full frame sensor format body in FX (full frame) mode.

One of the biggest challenges with macro photography is working with a limited depth of field or DOF. When I am shooting macro I am always trying to make sure the subject and elements in the frame appear sharp by adjusting the aperture and making sure the important elements in image fall on the plane of focus by adjusting my angle of view. But there is another important element that has a huge effect on DOF that most people don’t even know about, how a different sensor format can and will effect the depth of field in your image. Moving to a smaller sensor format at the same apparent magnification will give you lots more DOF to work with in your macro images.

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07.10.2013

Macro Photography: Working Distances with the Macro 105mm F2.8, 150mm F2.8 and 180mm F2.8

Sigma 180mm F2.8 EX DG OS HSM APO Macro. Image copyright 2013 Robert OToole Photography

Judging by the number of questions I get from photographers concerning the working distances of macro lenses I think it is a good subject to talk about.

The working distance of a macro lens, not to be confused with minimum focus distance, is the distance between the front of your lens and the subject. This is different from the minimum focus distance which instead means the distance to the subject as measured from the focal plane mark on the camera body, not from the front of the lens. Working distance is a more important figure since it tells how much space you have between the front of your lens and your subject. Working distance generally increases with longer focal length lenses, shorter lenses usually have shorter working distances.

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09.26.2012

Top Macro Photography Tips by Robert O’Toole

Nikon D800E, Sigma 180mm f/3.5 EX DG HSM APO Macro lens, single Nikon SB-R200 flash with diffuser @ 1:8 power, handheld, Manual mode 1/60th s, f16, ISO 320. Image copyright 2012 Robert OToole Photography

1. Shoot low for the best angle of view   Shooting at your macro subject’s eye level gives you a […]

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06.01.2012

Beachscapes

Spots where sand, sea, and sky come together offer certain challenges to photographers, but the results can be so amazingly rewarding. Conditions can change quickly as the sun hides behind a cloud, and conditions most certainly change slowly as the tides sink and rise and the sun and moon dance across the sky. The same patch of sea may be mirror calm and reflecting golden light, or it may be a churn of furious waves. Fogs, mists, and wind-whipped sand can make for gorgeous images even as they fool camera meters. There’s a world of possibilities waiting to be captured along these edges, whenever you visit, and with whatever Sigma lens you’ve got in your bag.

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05.31.2012

Macro photography by Robert O’Toole

Honey bee hovering over a Calandrinia flower. Sigma 180mm f/3.5 EX APO Macro HSM lens, single flash with diffuser at 1:8 power, handheld, Manual mode 1/250th sec, f8, ISO 500.

Macro or close-up photography is one of the most enjoyable and rewarding forms of nature photography. The proper set up […]

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04.19.2012

Spring Mushrooms!

Each year I anxiously await spring mushrooms. When early rains have saturated the ground and warm sunshine brings out new […]

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09.30.2011

Seeing the seasons with the Sigma 150mm F2.8 EX DG OS HSM APO Macro

It’s now officially Autumn here in the Northern Hemisphere. The days are getting shorter and hillside stands of trees are bursting into colorful displays of crimsons and golds. Obviously, it is a great time for ultrawide landscapes to capture those sweeping vistas. But it is also prime season for packing a telephoto macro lens like the Sigma 150mm F2.8 EX DG OS HSM APO Macro to capture the grandeur and spirit of the season in its tiny details.

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