SIGMA 28-105mm Lens
Posted 28/04/2010 - 08:36
Link
I had one some time ago, sold it to fund K10D purchase.
Not brilliant to be honest, but not bad either.
Not brilliant to be honest, but not bad either.
Z-1p, K-1, P50
F50 1.7. SMC-FAs 24, 35, 50 1.4, 85, 135. HD-FA15-30, DFA24-70, D-FA*70-200. The SMC-FA Limited Trinity.
Metz 45 CL-4, AF500FTZ. AF540FGZ.
Some Mamiya and some Nikon, and a Canon T70.
F50 1.7. SMC-FAs 24, 35, 50 1.4, 85, 135. HD-FA15-30, DFA24-70, D-FA*70-200. The SMC-FA Limited Trinity.
Metz 45 CL-4, AF500FTZ. AF540FGZ.
Some Mamiya and some Nikon, and a Canon T70.
Posted 29/04/2010 - 10:40
Link
Received your PM WeldingBlues, thought I'd post the reply here in case anyone had the same questions.
Here is a link to my original post about this lens:
https://www.pentaxuser.com/forum/topic/sigma-28-105mm-f2-8-4-mini-review-18492
And a few pics from an outing with it:
https://www.pentaxuser.com/forum/topic/farm-animals-18779
I haven't used it much to be honest. Still waiting to be invited to a party or a wedding
For me the biggest pluses with this lens are the good portrait range, relatively large aperture, and very very fast autofocus (due to the extremely tiny focus throw, so don't even think of trying to manually focus this lens!)
The only major negative is the large barrel distortion at 28mm. Probably easily fixable in PTLens, but I haven't had the need yet.
PS I have some homemade resolution chart shots I could email if you're interested. They clearly show the distortion at 28mm, as well as the good bits like the great corner sharpness even wide open.
Here is a link to my original post about this lens:
https://www.pentaxuser.com/forum/topic/sigma-28-105mm-f2-8-4-mini-review-18492
And a few pics from an outing with it:
https://www.pentaxuser.com/forum/topic/farm-animals-18779
I haven't used it much to be honest. Still waiting to be invited to a party or a wedding
For me the biggest pluses with this lens are the good portrait range, relatively large aperture, and very very fast autofocus (due to the extremely tiny focus throw, so don't even think of trying to manually focus this lens!)
The only major negative is the large barrel distortion at 28mm. Probably easily fixable in PTLens, but I haven't had the need yet.
PS I have some homemade resolution chart shots I could email if you're interested. They clearly show the distortion at 28mm, as well as the good bits like the great corner sharpness even wide open.
Tim
AF - Pentax K5, Sigma 10-20/4-5.6, Tamron 17-50/2.8, Sigma 30/1.4, Sigma 70-200/2.8, Tamron 70-300/4-5.6
MF - Vivitar CF 28/2.8, Tamron AD2 90/2.5, MTO 1000/11
Stuff - Metz 58 AF1, Cactus v4, Nikon SB24, Raynox 150, Sigma 1.4x TC, Sigma 2x TC, Kenko 2x macro TC, Redsnapper 283 tripod, iMac 27”, Macbook Pro 17”, iPad, iPhone 3G
Flickr • Fluidr • PPG • Street • Portfolio site
Feel free to edit any of my posted photos! If I post a photo for critique, I want brutal honesty. If you don't like it, please say so and tell me why!
AF - Pentax K5, Sigma 10-20/4-5.6, Tamron 17-50/2.8, Sigma 30/1.4, Sigma 70-200/2.8, Tamron 70-300/4-5.6
MF - Vivitar CF 28/2.8, Tamron AD2 90/2.5, MTO 1000/11
Stuff - Metz 58 AF1, Cactus v4, Nikon SB24, Raynox 150, Sigma 1.4x TC, Sigma 2x TC, Kenko 2x macro TC, Redsnapper 283 tripod, iMac 27”, Macbook Pro 17”, iPad, iPhone 3G
Flickr • Fluidr • PPG • Street • Portfolio site
Feel free to edit any of my posted photos! If I post a photo for critique, I want brutal honesty. If you don't like it, please say so and tell me why!
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1384 posts
17 years
Bedford
Only interested because its F2.8 and could be usefull in a situation where no flash is allowed etc.
“Nobody made a greater mistake than he who did nothing because he could do only a little.”
Edmund Burke (1729 – 1797)
[IMG]http://i941.photobucket.com/albums/ad254/weldingblues/K-7userbar-red.jpg[/IMG]