
Originally Posted by
WIlliam Maroldo
Hi Jay.
The better beamer is a flash extender, fits in front of a flash unit and focuses the light in a realitively narrow beam.
I think in this case the major problem is a you need a lens with more reach, and a flash wouldn't help.
Substantial crops almost always create serious image quality problems that can easily be attributed to other causes, such as looking like excessive noise, poor focus, insufficient shutter-speed, etc. Even the best image will exhibit what appears to be noise if enlarged too much. It is very helpful to disclose how much cropping was done when posting. It is worth noting that the size of the sensor is important as well. A full frame sensor will allow more cropping without image degredation than an ASP-C sensor and the more MP you have the greater you can crop.
It seems whatever reach your lens has, there will be many times when you need more, and you simply will not be able to make a decent shot. It is quite possible to incorporate a relatively small subject in environmental shots, or use clever composition, but you will not be able to "blow up" the subject to any great degree without severely compromising the image. regards~Bill