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10-15-2010, 11:33 AM   #16
Ira
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QuoteOriginally posted by YJD Quote
The Sigma 17-70 doesn't do macro, it does close up which I do like but so does the Tamron 28-75 even though the close up aren't as close. I think the sigma is 1:2.7 and the tamron 1:3.5. It's not those exact number but it should be around there.
The 28-75 does some incredible close-shooting work when you consider cropping and the lens's fantastic IQ.

I'm a big fan of that Tammy, and if I shot zooms, that would be the first one in my bag.

(Besides the 18-55 kit which I basically got for free when I bought the kit.)

10-15-2010, 11:50 AM   #17
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I have the Tamron 28-75, and while it is a very good lens there are times that I need to deal with the space between my sigma 10-20 and the 28mm limit of the tammy.

If I have the space in my bag, I take the FA-J 18-35 that came as a kit lens with my *istD.

If you already have the 17-70 and really want more speed indoor, note that you only get between nothing (short end) and 1 stop at the long end with the tammy, so for me, I would probably not change just for that, and give up the wider lens for normal walk around duty.

You might wish to look at adding a prime lets say in the 35-70 range and get even more speed. there are AF 35F1.4 (sigma) and F2 (Pentax)lenses available as well as 50mm F1.4 and these will get you 1-2 stops in addition to going to a constant F2.8 zoom, and wil be sharper wide open.
10-15-2010, 12:44 PM   #18
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QuoteOriginally posted by YJD Quote
Hi,

I already have a Sigma 17-70 which I love. It's sharp and allow close up pictures.

With the winter and cold coming up, I would spend more time inside taking pictures of my 3 kids and therefor I believe I need a faster lens.

It looks like the tamron will be ideal since it's 2.8 all the way through the zoom range and will still allow me to to close up which I love.

I do enjoy landscape too and I'm afraid I will miss the 17-28 range.

Did any of you had to make the same time a decision for the same similar reason?
Please, share what you have decided and why.

Thank,
Yael

Yael, you are better off with your Sigma. you'll surely miss those 11mm. not saying the Tamron is bad, but focal length flexibility is much more important than better IQ.

for me, I would choose the Tamron, just because I have the DA12-24.
10-15-2010, 02:09 PM   #19
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I just (last night) shot more on-the-fly photos of my twin toddler granddaughters. So I've been thinking about these things anyway.

A couple of years ago I picked up a 18-50mm 2.8 to get enough light and a small enough DOF for the kids. I found that I was not happy with the DOF - the kids wouldn't stay still long enough for careful composition and thin DOF.

So I went back to the Sigma 17-70mm, shooting in Av at more like f/5.6 or f/8 to get enough DOF to get the whole scene and both kids and parents. If I have to add some blur later, I'll muck about in PSE. Or even the 10-20mm when I want to have serious fun!

And I do use the 17-30mm range quite a bit. I recall that last night I was often at or under 20mm.

Your family and the shots you want could lead you elsewhere, but I would not sacrifice the wide end to get a DOF you may not have much use for.

In any case, have fun and shoot lots!

10-15-2010, 04:12 PM   #20
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Thank you all for your comments.

I will keep my current lens and save up for a new camera. The only lens I might be will be a Pentax M 85 if ever it comes around.
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