The Blog: See what
Sigma is saying.


First of all I would like to thank Sigma for the great opportunity to share my work and some nature photography techniques. Through this blog I can share ways to improve your nature photography and most importantly enjoy your photography more.

One of the most important pieces of advice I can share is to realize that your imaging success is not as dependent on your camera as most people believe. The most important factors for successful nature photography in order of importance are the photographer, the lens, being there, proper technique, knowing your subject and finally the camera.

Bald Eagle on approach, Kachemak Bay Alaska. © 2010 Robert OToole / Robert OToole Photography

Canon 1DMKII N and Sigma 70-200mm F2.8 HSM, Handheld, 1/1250 sec at F4, manual metering, flash off, ISO 100.

Another important factor to success is learning good technique. Get as much practice as possible and learn from others that are more experienced. If you are a beginner or novice start out with a quality lens and a good prosumer SLR and consider a tour or workshop to learn proper field techniques. Training can really help you get the most enjoyment out of your equipment.

Bald Eagles in a snow shower, Kachemak Bay Alaska. © 2010 Robert OToole / Robert OToole Photography

The image above was made with a point and shoot and the only reason I included it is to show what you can do with a very basic camera and some good technique. If your budget doesn’t allow for an 800mm lens learn to make the most of what you have and enjoy photography.

Bald Eagle banking, Kachemak Bay Alaska. © 2010 Robert OToole / Robert OToole Photography

Nikon D700 and Sigma 100-300mm F4 EX HSM, Handheld, 1/600 sec at F5.6, manual metering, flash off, ISO 800.

The images here were made during my Bald Eagle workshop in Alaska. If you would like to know more or to join my free newsletter list please email: or visit my website: You can send me ideas about any nature techniques you would like to learn more about in a future blog post.

Robert Robert OToole Photography

t:   +1.310.619.8017
e: w:

Facebook comments:

2 comments so far

Add Your Comment
  1. hi I bought SIGMA 70:300 OS lense,,,can I seek some advice and tips in this kind of lense…tnx..jappy castillo-phillipines

  2. Robert you offered excellent tips and advice, and I truly do appreciate it! Thank you, please keep doing it! I went from using the Sigma 18-250mm OS HSM for birding (not ideal) but had to use with what I had at the time, to now I share with my husband the Sigma 150-500mm OS HSM, and Nikon 28-300mm VR. I LOVE the Sigma 150-500mm OS HSM, for it’s reach, sharpness vs Nikon 28-300, and it’s fast focus! Now I have to share this lens with my husband, so I’m considering either the Sigma 50-500mm OS HSM or Sigma 120-400mm OS with an added teleconverter for more reach. It seems like the Sigma 120-400mm OS is much sharper than Sigma’s 50-500mm OS, but I’m far from an expert which do you think in your opinion would render best value on focus, sharpness, and reach? I would like to do a one of your workshops in the near future, maybe if you do one near Central Florida I can attend!