tag:blogger.com,1999:blog-34648316.post8549051422356283589..comments2024-03-01T21:57:13.601-08:00Comments on Hin's Photo Corner: Sigma 17-70mm f/2.8-4.5 As Walk-Around LensHin Manhttp://www.blogger.com/profile/11542007867767875530noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-34648316.post-34078254679935331112009-08-31T18:13:39.022-07:002009-08-31T18:13:39.022-07:00Yes Somanna, I am very delighted to see your comme...Yes Somanna, I am very delighted to see your comment and visit. Yes, I feel highly of the Sigma zoom though it is touch less in speed and IQ especially for portraits as compared to the Tamron 28-75mm f/2.8 zoom. <br /><br />I have have the exact fall off of apertures, I think the f/2.8 goes up to the 30+ mm and f/4.0 to f/4.5 probably reaches 50mm. So in the 50mm to 70mm, we may get the f/4.5. It is not bad at all and it is definitely faster than Pentax DA 17-70mm f/4.0 for the most part under 50mm. Exact aperture fall off need to confirm with others. <br /><br />The lens does extremely well for me, especially for outdoor and close-up. The portrait in 70mm, especially for indoor would be a challenge without the use of flash. It is a touch soft wide open in f/4.5 in the 70mm but still usable. It is pretty fast in the shorter end of the zoom as in 17mm to 35mm.Hin Manhttps://www.blogger.com/profile/11542007867767875530noreply@blogger.comtag:blogger.com,1999:blog-34648316.post-22642807145639101282009-08-31T11:40:58.005-07:002009-08-31T11:40:58.005-07:00Hin,
This post is exactly what I've been looki...Hin,<br />This post is exactly what I've been looking for! I am debating b/w the Sigma and Pentax version of this lens, and I'm tempted by the low price of the Sigma but the constant aperture of the Pentax. These examples are tilting the favor towards Sigma!Somannahttp://www.flickr.com/photos/shalootnoreply@blogger.com