Zoom comparison

[HankScorpio]

For my own reference, I thought I'd do a quick zoom comparison chart as I sometimes find it hard to visualise just what a particular lens will do for me in the field without putting it on.

The pictures are rubbish (camera left on auto and wiggly tripod on windy day) but certainly give an idea.

I was quite surprised at the detail resolved at 400mm...

http://www.hankscorpio.net/misc/zoomtest/

[chris.mapey]

Thanks for that, I used to have a chart of piccy's years ago that did the same thing - long gone!

Useful resource, thanks for posting.

Best regards,

Chris

[ThatPhilBrettGuy]

Oh, erm, not sure about the Sigma 70-200EX then At least with the 2X converter. The 400x400 @ 400mm (enough 400's there ) shows similar effects to my duff 120-300 showed at the edges. Not out of focus or movement, something else. Mushy?

I took this hand held with the replacement 120-300 and the Sigma 2X converter. I'd expect to get similar if not better.



400x400 crop @ 100%



Nice resource though and thanks Hank! Taken with a Nikon so 1.5x multiplier yes?

[HankScorpio]

Yep, spot on.
I've never looked *that* closely at a 400 image before but the whole rig was definitely moving as the pics were taken. The tripod and head are flimsy and the camera was screwed to the tripod rather than using the lens ring which is what I would usually do for better balance.

I did this as a zoom comparison rather than a lens test but having seen the results, I'm hoping to get some time this week to check the lens itself. Hopefully it'll prove to be fine....