Meerkat

[Garry]

One of numerous photos of Meerkats that I have taken recently.

[Ian]

Re: Meerkat

You can't go wrong with these charming creatures One question - you used f/9 - this means the background, although blurred, could have had more definition dialled out if you used a wider aperture - say, f/5.6?

Ian

[Garry]

Re: Meerkat

You can't go wrong with these charming creatures One question - you used f/9 - this means the background, although blurred, could have had more definition dialled out if you used a wider aperture - say, f/5.6?

Ian

A very good question, Ian

The lens that I used here is the Canon 70 -200mm f2.8 IS " L "

It is razor sharp. But this lens is sharp, wide open on a full frame camera.

I learned after purchasing it, that they are not sharp on a cropped frame camera until f8

I have experimented numerous times, and have found this to be the case.

I first read about this problem in a well known review site.

[Barr1e]

Re: Meerkat

The lens certainly worked on the Meekat - great stuff - it's a cracker.

Regards. Barr1e

[Graham_of_Rainham]

Re: Meerkat

A classic pose for these guys...

I too have not been to a Zoo for years. Where is this

[Garry]

Re: Meerkat

A classic pose for these guys...

I too have not been to a Zoo for years. Where is this

Thank you Graham

This is Marwell Wildlife in Hampshire.

It was once Marwell Zoo, but has been renamed.

[Ian]

Re: Meerkat

A very good question, Ian

The lens that I used here is the Canon 70 -200mm f2.8 IS " L "

It is razor sharp. But this lens is sharp, wide open on a full frame camera.

I learned after purchasing it, that they are not sharp on a cropped frame camera until f8

I have experimented numerous times, and have found this to be the case.

I first read about this problem in a well known review site.

Interesting and puzzling. It is certainly contrary to what one might expect. With a cropped sensor the camera is seeing the central area of the image circle, which is the where the best image quality is found. With more densely packed pixels in a cropped sensor the threshold for diffraction softening is at a larger aperture and f/9 is very close to that threshold for the EOS-7D's diffraction limit. Many high quality modern lens designs now exhibit best resolution at almost full aperture. Assuming the anecdotes are true for this lens, I'd be looking to find a lens more suited for my 7D!

Ian

[Garry]

Re: Meerkat

Interesting and puzzling. It is certainly contrary to what one might expect. With a cropped sensor the camera is seeing the central area of the image circle, which is the where the best image quality is found. With more densely packed pixels in a cropped sensor the threshold for diffraction softening is at a larger aperture and f/9 is very close to that threshold for the EOS-7D's diffraction limit. Many high quality modern lens designs now exhibit best resolution at almost full aperture. Assuming the anecdotes are true for this lens, I'd be looking to find a lens more suited for my 7D!

Ian

Or! Get a full frame camera to add to my ever growing collection!

[John Perriment]

Re: Meerkat

Well, this shot is certainly sharp! I think everybody agrees these are adorable little creatures.