Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Pentax Lenses

Reply
 
Thread Tools Search this Thread
Old Sep 25, 2009, 5:33 AM   #1
Senior Member
 
mole's Avatar
 
Join Date: Mar 2009
Posts: 8,522
Default Lens advice: 70-300 F4-5.6

Sure could use some advice from some of the lens experts!
I've noticed a number of used Sigma and Tamron 70-300, F4-5.6 lenses for sale lately at relatively low prices - perhaps even I could afford one! How much better would one of these be for bird/wildlife photography than my trusty Tamron 18-250? Thanks!
mole is offline   Reply With Quote
Sponsored Links
Old Sep 25, 2009, 7:58 AM   #2
Moderator
 
Join Date: Aug 2004
Posts: 8,529
Default

Neither lens is very fast to focus and sharpness is what you would expect from 300mm lenses in this price range. Of the two, the Tamron is sharper.
JohnG is offline   Reply With Quote
Old Sep 25, 2009, 8:37 AM   #3
Senior Member
 
DMJJR's Avatar
 
Join Date: Oct 2005
Posts: 926
Default

Don't know what you are looking for in sharpness-I really like my DA 55-300. The shot on the left is cropped from a larger size-cropped the knob on the bat-the original shot was taken using an Ist DS- 6 megapixel from about 60 feet. I personally don't think I could expect anything better from my equipment.
Attached Images
 
DMJJR is offline   Reply With Quote
Old Sep 27, 2009, 9:23 PM   #4
Senior Member
 
cameanee's Avatar
 
Join Date: Dec 2005
Location: Left Coast
Posts: 228
Default

Bought my Tamron 70-300 years ago for my 35mmSLR. It has it's weaknesses and I've learned to work with them. BUT I love this lens and the Macro feature is nice.

One thing, now that I plop it onto a dSLR, purple fringing can be high. Something I live with since I don't PP my pics to correct the purple fringing. I really got to get dialed-in to the PP thing.
cameanee is offline   Reply With Quote
Old Sep 27, 2009, 11:41 PM   #5
Senior Member
 
Hawgwild's Avatar
 
Join Date: Mar 2006
Location: Pensacola, Florida
Posts: 3,525
Default

Mole, I first used a Tamron 70-300 when I bought my Nikon D-50. Then, when I bought my Sony A-300, I bought another Tamron 70-300 and I love it. It seems sharp enough for my purposes. Here are a couple of pictures taken with the lens, all shot at iso 200...

300mm f/8.0 1/30 sec



200mm f/9.0 1/125 sec



300mm f/8.0 1/160 sec



I think you could do worse than this lens, as well as better, but for the price, you can't go wrong...

Robert

Last edited by Hawgwild; Sep 27, 2009 at 11:52 PM.
Hawgwild is offline   Reply With Quote
Old Sep 28, 2009, 5:19 AM   #6
Senior Member
 
mole's Avatar
 
Join Date: Mar 2009
Posts: 8,522
Default

Thanks for all the fine advice, as well as the great sample photos. From what you've said, it doesn't look like either of these lenses will give me much benefit over the 18-250 tamron I'm now using. Thanks again!!
mole is offline   Reply With Quote
Old Sep 28, 2009, 8:32 AM   #7
Senior Member
 
cameanee's Avatar
 
Join Date: Dec 2005
Location: Left Coast
Posts: 228
Default

Mole, I guess I forgot to add that I almost always use my 18-250 over the 70-300 now.
cameanee is offline   Reply With Quote
Old Sep 30, 2009, 9:08 PM   #8
Senior Member
 
penolta's Avatar
 
Join Date: Apr 2007
Location: California USA
Posts: 5,206
Default

Quote:
Originally Posted by mole View Post
Thanks for all the fine advice, as well as the great sample photos. From what you've said, it doesn't look like either of these lenses will give me much benefit over the 18-250 tamron I'm now using. Thanks again!!
I have both of these lenses and my take is that the 18-250 is the better all-around/walk-around lens because of its compactness and greater range in focal lengths, but the 70-300 has two advantages: longer reach and maybe better resolution at the long end, and 1:2 magnification for close-ups - I much prefer it for tele-macros, but neither is a substitute for a true macro at an equivalent focal length - so it is hard to say that you would do any better for what you do than with what you have now. The 70-300, however, is also an absolute bargain at the price it sells for. BTW the DA55-300 may be the better at 300mm, but it is not much good for close-ups - I would rank it first for bird photography, then the 70-300, and lastly the 28-250. I would avoid the non APO 70-300 Sigma, but the APO version seems to be well liked. I have a Sigma 28-300 (in Sony mount) which is quite compact, 1:3 close-up, and a capable walk-around lens lens, but otherwise nothing to get excited about.
__________________
.
.
If life brings you lemons, you can make lemonade.

Last edited by penolta; Sep 30, 2009 at 9:32 PM.
penolta is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 6:45 AM.