wwp@yahoogroups.com:
Re: Nikon 2.8/10,5 Sigma 3.5/8 or Tokina 10-17 ?
Luciano 2009-May-11 13:16:00
Flares, dust or waterdrops... why you guys don't photoshop it off from your
panos? Alex, your words "This is one of my worst panos..." is sad, please
don't say it again, just photoshop it and be happy! ;p)
btw, cool place, the valley behind the woods, where is locate?
Cheers,
Luciano
On Sun, May 10, 2009 at 11:37 PM, Alex Makienko <#removed#>wrote:
>
>
> Hans,
>
> The spots in the image you refer have absolutely the same nature as here:
>
> http://dimensions360.com/index.php?screen=show&id=7087d155&galle...
>
> This pano has been taken under an intensive shower - dense water dust was
> coming from the powerful waterfall (yes, the lens had been thoroughly
> cleaned before and, of course, after shoting :-)). What you see there is
> IMAGES of waterdrops on the front lens of Nikkor.
>
> Here:
>
> http://dimensions360.com/index.php?screen=show&id=e222c0bc&galle...
>
> the nature of the spot is completely different. This is one of my worst
> panos and a pure example of Nikkor's FLARE.
>
> Cheers,
>
> Alex
>
> ----- Original Message -----
> From: Hans Nyberg
> To: #removed# <wwp%40yahoogroups.com>
> Sent: May 10, 2009 8:54 PM
> Subject: Re: Nikon 2.8/10,5 Sigma 3.5/8 or Tokina 10-17 ?
>
> On 11/05/2009, at 2.00, Alex Makienko wrote:
>
> > C'mon! Do you think I'm a rookie? ;-) Please be sure that having 30
> > + years in serious photography (including professionsl one) and
> > being MS in physics (you probably know that optics is the part of
> > physics) I know how to keep lens clean.
> >
> > For your information: Flares shaped like spots, polygons and
> > somethong like that are NEVER caused by grease, fingerprints,
> > scratches etc. These defects cause parasitic beams, star-like
> > spots, additional lighting and anything else BUT spots and flares.
> > I hope I do not need to refer to a fundamental optics to confirm
> > that. Please just trust my experience in physics (and optics
> > particulary) and photography.
>
> Sorry Alex but I beat you. I have 56 years experience in photography
> of which 42 is as a professional photographer,
>
> Of course you get flares with poligons because of a lens which is
> not cleaned.
> Here is an example taken a couple of years ago.
> http://www.panoramas.dk/panorama/flare/dust.jpg
>
> This is the Canon 15mm one the best fisheye you can get. It has
> practically no flare very little CA very little lightfall and
> sharpness is exellent.
> However I took my brand new lens and went out to test it without even
> taking the lens cap of and look at the frontlens.
>
> I did not think of that it had to be cleaned before I used it, and
> on top of that I also by mistake on my new 5D stopped down to F19
> which accelerated the problem.
>
> I see this a lot on panos made even by very experienced
> photographers. And people complain that the lens has flares but in
> reality it is just a dirty lens stopped down to 16 or even 22.
>
> Hans
>
> Hans Nyberg
> Panoramas.dk<http://www.panoramas.dk>
> Features Fullscreen Panoramas from the best VR Photographers in the
> World
> email: #removed# <hans%40nyberg.com>
>
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