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Old Jul 2, 2008, 6:17 AM   #1
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All taken on auto focus & quite sharp (IMHO)


Red Admiral
1/160s, f9, 200 ISO, 375mm


Marbled White
1/250s, f9, 160 ISO, 375mm


Comma
1/250s, f9, 160 ISO, 375mm


Comma
1/200s, f9, 160 ISO, 375mm

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Old Jul 2, 2008, 7:21 AM   #2
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Sharp indeed. And great composition. Where were you that you got a nice variety?

How would you rate this lens at the wide end? Your 3 posts show it's capability at medium to telephoto. This seems to be a superb travel lens, where you don't want to be lugging around an arsenal of lenses and don't want to be changing lenses in the field.

Jim
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Old Jul 2, 2008, 11:07 AM   #3
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a200user wrote:
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Where were you that you got a nice variety?
On the sunny side of a disused chalkpit.


a200user wrote:
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How would you rate this lens at the wide end?
Very poor. It's the compromise for getting such a wide zoom range. Vignetting is quite bad. Almost decided to return the lens because of this but found that with lens correction in PS CS3 & in RAW, the vignetting can be almost totally eliminated on any shots where it's a problem. Kept the lens 'cause it's so versatile.

I try & keep the aperture to above f8 which under some lighting conditions is difficult.

I used Tav mode to set the desired shutter speed & aperture modifying if the ISO went too high (like to keep it below 400 but 500 seems OK).

I'm now trying out Av mode using the front wheel to adjust the ISO with the aperture set as high as I can manage under whatever lighting conditions prevail & it seems to work better.

All images were shot in RAW+ using maximum sharpness setting, converted with PPL v3 on manual & post processed with PS CS3.
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Old Jul 2, 2008, 7:01 PM   #4
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The lens works well in the close range - nice captures. TheButerfly Bush is well named - we have several in our yard -- they love them.
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Old Jul 2, 2008, 10:19 PM   #5
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Lovely series! And thanks for the explanation about the lens. It's nice to see what its capabilities are.
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Old Jul 3, 2008, 2:48 AM   #6
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Great series, all so good.
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Old Jul 4, 2008, 2:30 PM   #7
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It would be interesting to compare the Pentax 18-250mm against the Tamron 18-250mm. These photos look really great. Thanks for posting them.

Sarah Joyce
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Old Jul 4, 2008, 6:08 PM   #8
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mtclimber wrote:
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It would be interesting to compare the Pentax 18-250mm against the Tamron 18-250mm. These photos look really great. Thanks for posting them.
I doubt that you would see much of a difference, if any, bearing in mind that the Pentax is of Tamron origin.

I would have bought the Pentax purely because it looks better but was not prepared to pay UKĀ£100 more for the privalige.

Incidentially, one of the reviews that I read indicated that vignetting & CA were worse on the Pentax that on the Tamron (Canon mount). Perhaps that's the difference between Pentax x1.5 & Canon x1.6 - I'm assuming that the Canon uses less of the image area resulting in less vignetting.
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Old Jul 5, 2008, 1:39 AM   #9
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All nice shots. #1 gets lost in the background, but the rest really stand out and show the quality of the equipment and the skills of the photographer.

glenn
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Old Jul 5, 2008, 1:54 PM   #10
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Very nice series and a good summary of the capabilities of this lens. Thanks for sharing.

Tim
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