For the amateur deciding which lens to buy, the price difference from budget to high quality should be justified by a resultant shift in picture quality. The trouble is how does one actually compare lens quality. We took all the lenses an amateur may consider buying for big field sports photography and field tested them at a local cricket match. To make it a true-to-heart comparison, we even enlisted amateurs to shoot the pics and used entry-level camera bodies - Canon 400D, Nikon D60, Sony A350. From Canon we tested the 75-300mm USM lens, the 70-300 DO IS USM lens and the 100-400mm L IS USM lens. We actually requested the popular 70-300mm IS USM lens from Canon as it was a more appropriate pro telephoto upgrade choice. Nikon didn’t have a budget lens that entered the 300mm focal length range, so we only tested the pro telephoto 70-300mm VR lens and the pro super-telephoto 80-400mm VR. There is actually a higher quality pro super-telephoto lens available from Nikon, but at a price tag over R80 000, it is not a likely choice for amateurs. From Sony we used the 75-300mm lens, the 70-300mm SSM lens and the newly released 70-400mm lens. Rather than describe the lenses, we let the pictures do the talking. Below are the series of pictures reduced in size followed by a comparison of the same pictures enlarged to 100% and cropped. The 100% crops allow you to see the actual level of detail and quality captured that isn’t evident in a reduced size picture.

Comparison of Pictures - Full frame reduced size
The Budget Lenses
Canon 75-300 Canon EF 75-300mm f4.0-5.6 III USM
1/500th f5.6 ISO 400
Current Price: R3500

Canon EF 75-300mm f4.0-5.6 III USM

Sony DT 75-300mm F4.5-F5.6 Sony DT 75-300mm F4.5-F5.6
1/500th f5.6 ISO 400
Current Price: R2900

Sony DT 75-300mm F4.5-F5.6

The Pro Telephoto Lenses
Canon EF 70-300mm f4.5-5.6 DO IS USM Canon EF 70-300mm f4.5-5.6 DO IS USM
1/800th f5.6 ISO 400
Current Price: R18900

Canon EF 70-300mm f4.5-5.6 DO IS USM

Nikon 70-300mm f/4.5-5.6G ED-IF AF-S VR Nikon 70-300mm f/4.5-5.6G ED-IF AF-S VR
1/500th f5.6 ISO 400
Current Price: R6000

Nikon 70-300mm f/4.5-5.6 VR

Sony 70-300mm F4.5-5.6G SSM Sony 70-300mm F4.5-5.6G SSM
1/500th f5.6 ISO 400
Current Price: R9500

Nikon 70-300mm f/4.5-5.6 VR

Super-Telephoto Pro Lenses
Canon EF 100-400mm f4.5-5.6 L IS USM Canon EF 100-400mm f4.5-5.6 L IS USM
1/500th f5.6 ISO 400
Current Price: R19700

Canon EF 100-400mm f4.5-5.6 L IS USM

Nikon 80-400mm f4.5-5.6D ED AF VR Nikon 80-400mm f4.5-5.6D ED AF VR
1/800th f5.6 ISO 400
Current Price: R19700

Nikon 80-400mm f4.5-5.6D ED AF VR

Sony 70-400mm f4-5.6 G SSM Sony 70-400mm f4-5.6 G SSM
1/800th f5.6 ISO 400
Price Not Available Yet

Sony 70-400mm f4-5.6 G SSM

Comparison of Pictures - Enlarged to 100% and Cropped
The Budget Lenses
Canon 75-300 Canon EF 75-300mm f4.0-5.6 III USM
1/500th f5.6 ISO 400
Current Price: R3500

Canon EF 75-300mm f4.0-5.6 III USM

Sony DT 75-300mm F4.5-F5.6 Sony DT 75-300mm F4.5-F5.6
1/500th f5.6 ISO 400
Current Price: R2900

Sony DT 75-300mm F4.5-F5.6

The Pro Telephoto Lenses
Canon EF 70-300mm f4.5-5.6 DO IS USM Canon EF 70-300mm f4.5-5.6 DO IS USM
1/800th f5.6 ISO 400
Current Price: R18900

Canon EF 70-300mm f4.5-5.6 DO IS USM

Nikon 70-300mm f/4.5-5.6G ED-IF AF-S VR Nikon 70-300mm f/4.5-5.6G ED-IF AF-S VR
1/500th f5.6 ISO 400
Current Price: R6000

Nikon 70-300mm f/4.5-5.6 VR

Sony 70-300mm F4.5-5.6G SSM Sony 70-300mm F4.5-5.6G SSM
1/500th f5.6 ISO 400
Current Price: R9500

Nikon 70-300mm f/4.5-5.6 VR

Super-Telephoto Pro Lenses
Canon EF 100-400mm f4.5-5.6 L IS USM Canon EF 100-400mm f4.5-5.6 L IS USM
1/500th f5.6 ISO 400
Current Price: R19700

Canon EF 100-400mm f4.5-5.6 L IS USM

Nikon 80-400mm f4.5-5.6D ED AF VR Nikon 80-400mm f4.5-5.6D ED AF VR
1/800th f5.6 ISO 400
Current Price: R19700

Nikon 80-400mm f4.5-5.6D ED AF VR

Sony 70-400mm f4-5.6 G SSM Sony 70-400mm f4-5.6 G SSM
1/800th f5.6 ISO 400
Price Not Available Yet

Sony 70-400mm f4-5.6 G SSM