Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-14-2010, 04:33 PM   #31
Veteran Member
Laurentiu Cristofor's Avatar

Join Date: Nov 2009
Location: WA
Photos: Albums
Posts: 3,044
QuoteOriginally posted by boriscleto Quote
Not the best example. DA L 55-300 @ f/5.8 ISO 1250

Can't pass this opportunity of showing other hare shots @300mm:

Tamron SP 60-300@300mm f/5.6 1/125 ISO 800:


Tamron 70-300@300mm f/5.6 1/125 ISO 800


Not that easy to pick among them based on such shots, is it?


Last edited by Laurentiu Cristofor; 12-14-2010 at 04:35 PM. Reason: included image in quote to have all shots on the same page
12-14-2010, 04:41 PM   #32
Pentaxian
JohnBee's Avatar

Join Date: Sep 2008
Location: front of computer
Posts: 4,620
Hard to tell(because of size), but how would you rate the 55-300 vs the SP 60-300?
12-14-2010, 05:12 PM   #33
Veteran Member
Laurentiu Cristofor's Avatar

Join Date: Nov 2009
Location: WA
Photos: Albums
Posts: 3,044
QuoteOriginally posted by JohnBee Quote
Hard to tell(because of size), but how would you rate the 55-300 vs the SP 60-300?
I only used the 55-300 for a couple of hours. I got this shot with it:

@f/6.3:


I never did any formal comparison tests but these are my impressions from practical use. Note that I'm talking about the performance of these lenses when used wide open - by f/8 they all achieve good sharpness and it's harder to differentiate them.

The SP 60-300 might be the sharpest wide open. I'm surprised how sharp it is given that it's a zoom. But it is vulnerable to PF, so it's not all good.

Next, I'd say you have the DA 55-300 and the FA 100-300 - hard to tell which one is sharper - both can provide great results if used well. PF is not an issue for either of them. I focus manually, and the FA has a longer throw, so it works better for me. The DA probably has the shortest throw of all these lenses.

I also used the Tamron SP 300/5.6. It's as sharp as any of the above but is even more vulnerable to PF than the SP 60-300 zoom.

The Tamron 70-300 may be the least sharp of the bunch @300mm wide open, but not by much. It has a decent focus throw for manual focusing and the closeup capability is its selling point for me. It also suffers from PF, but it's different than the older adaptall lenses.

I also reviewed these lenses (other than the DA) here on PF. And you can follow the links in my signature for more sample shots from each of these lenses.
12-14-2010, 05:35 PM   #34
Pentaxian




Join Date: Feb 2010
Location: Eureka, CA
Photos: Gallery | Albums
Posts: 1,942
QuoteOriginally posted by sjwaldron Quote
The question is, are these other zoom lenses really much better though? I don't want to see you buy a lens that doesn't actually help your issue.
I agree. Perhaps if you saw some pics with the Tamron at 300mm it might help. Here's the sharpest one I could find from my library. I added generous doses of vibrance, clarity, sharpness and contrast in post:



This is a handheld shot at 200 ISO, f11, 1/250sec. Here's a ~100% crop of same paic:



The key to this shot is f11: the lens sharpens up as you stop down. I also nailed the focus and kept the camera remarkable steady (this can be tricky). I doubt this lens is capable of sharper results than this (and it still required a lot of sharpening in post). Most of the pics I took with this lens are not as sharp as this one. It takes a bit of skill and luck to draw out and maximize what sharpness is there.

12-14-2010, 05:58 PM   #35
Moderator
Site Supporter
photolady95's Avatar

Join Date: May 2009
Location: Cruising PentaxForums and watching your back.
Photos: Gallery | Albums
Posts: 9,518
Original Poster
The photo below was shot with the Sigma 70-300mm @300mm handheld. Are the other lenses sharper than this photo?



I think it's the weight that is a problem for me. The longer I hold it the heavier it gets and makes it almost impossible to shoot with.
12-14-2010, 08:16 PM   #36
Veteran Member




Join Date: Mar 2007
Location: Boston, PRofMA
Photos: Albums
Posts: 3,053
QuoteOriginally posted by photolady Quote
The photo below was shot with the Sigma 70-300mm @300mm handheld. Are the other lenses sharper than this photo?
Yes...that's pretty fuzzy. The Tamron definitely is at 280mm...and probably 300mm because it has a good macro mode. The 55-300 will definitely be sharper than that at 300mm as well. Consumer zooms are generally just ok, but to do better requires a prime/nonzoom (300/4) or heavier lens (Sigma 100-300).

I think the answer for you might be a tripod from how you describe the weight...look at the acratech GV2 ballhead which has a gimbal mode.
12-14-2010, 08:42 PM   #37
Moderator
Site Supporter
photolady95's Avatar

Join Date: May 2009
Location: Cruising PentaxForums and watching your back.
Photos: Gallery | Albums
Posts: 9,518
Original Poster
This photo is in my PPG. And the fuzzy could be from being uploaded from photobucket. Unfortunately, a lot of my photos look this way but are sharp in my editor.

I have a tripod and head. I just chose not to use it because I do a lot of panning and manual shooting.
12-14-2010, 08:56 PM   #38
Moderator
Site Supporter
photolady95's Avatar

Join Date: May 2009
Location: Cruising PentaxForums and watching your back.
Photos: Gallery | Albums
Posts: 9,518
Original Poster
This also was taken at 300mm, the only thing I don't like here is the I missed the focus on his eyes.



12-14-2010, 10:01 PM   #39
Veteran Member
Frogfish's Avatar

Join Date: Dec 2009
Location: Shanghai
Posts: 4,490
Here are a couple of shots with the Tamron 70-300, I did have a macro shot somewhere too - definitely better than the butterfly shot above. It's very sharp in macro mode (up to 1:2).

ISO 400, F5.6, 1/160, 300mm. Focus missed on the eye as you can see it's slightly forward, on the body.



This was at dusk so probably some motion blur, 1/80, ISO 800, F5.6, 300mm

12-14-2010, 10:30 PM   #40
Veteran Member
Laurentiu Cristofor's Avatar

Join Date: Nov 2009
Location: WA
Photos: Albums
Posts: 3,044
QuoteOriginally posted by photolady Quote
This also was taken at 300mm, the only thing I don't like here is the I missed the focus on his eyes.
And missing focus makes it hard to appreciate the sharpness. You need to judge the lens on a shot that is correctly focused, otherwise you're just appreciating the difficulty to focus

BTW, how do you focus exactly? Do you use AF and if yes, how exactly?

None of these lenses provide the sharpness that you usually get from a macro lens. But if used well, they can produce quite impressive images, which can be hard to differentiate especially at web sizes.

For example, from the following three shots, can you guess which shot was taken by the Tamron 70-300@300mm and which was taken by a Sigma 105 macro?

Sample 1:


Sample 2:


Sample 3:
12-14-2010, 10:36 PM   #41
Moderator
Site Supporter
photolady95's Avatar

Join Date: May 2009
Location: Cruising PentaxForums and watching your back.
Photos: Gallery | Albums
Posts: 9,518
Original Poster
I shoot manual everything. I don't like AF because sometimes it takes too long to find the focus, and shooting butterflies, bees, dragon flies, etc, they're long gone by the time the camera gets the focus right.

I missed the focus on the dogs eyes because I was focusing on his nose, not his face.

And of course the f stop wasn't right and the shutter speed didn't need to be 1/1000s either. But just seconds before that shot, I was shooting bees, little ones and bumble type.
12-14-2010, 10:48 PM   #42
Veteran Member
Frogfish's Avatar

Join Date: Dec 2009
Location: Shanghai
Posts: 4,490
Photolady : the Tamron 70-300 is definitely the right lense for you ATM because of the subject matter you seem to enjoy shooting. You will be delighted with it's 1:2 macro mode - it is very sharp for a lense in this price range - and will be very good for butterflies, dragonflies, bees etc.
12-14-2010, 11:07 PM   #43
Moderator
Site Supporter
photolady95's Avatar

Join Date: May 2009
Location: Cruising PentaxForums and watching your back.
Photos: Gallery | Albums
Posts: 9,518
Original Poster
Frogfish, is this the one you're talking about:

70-300 F4-5.6 TAMRON LD DI TELE-MACRO BLACK (62) (A17) 35MM SLR AUTO FOCUS ZOOM TELEPHOTO LENS
12-14-2010, 11:09 PM   #44
Veteran Member
yeatzee's Avatar

Join Date: Feb 2009
Location: Temecula
Photos: Gallery | Albums
Posts: 3,675
QuoteOriginally posted by Laurentiu Cristofor Quote
And missing focus makes it hard to appreciate the sharpness. You need to judge the lens on a shot that is correctly focused, otherwise you're just appreciating the difficulty to focus

BTW, how do you focus exactly? Do you use AF and if yes, how exactly?

None of these lenses provide the sharpness that you usually get from a macro lens. But if used well, they can produce quite impressive images, which can be hard to differentiate especially at web sizes.

For example, from the following three shots, can you guess which shot was taken by the Tamron 70-300@300mm and which was taken by a Sigma 105 macro?

Sample 1:


Sample 2:


Sample 3:
sample 2 = tammy.
12-14-2010, 11:34 PM   #45
Pentaxian




Join Date: Jul 2010
Location: Oregon
Photos: Albums
Posts: 1,418
You want cheap, light, and sharp at 300mm. That's a tough one. How about a Tamron sp 300mm f5.6?
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
300mm, af, k-mount, money, pentax, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
OK, Which is Sharper ? wll Pentax SLR Lens Discussion 10 09-06-2009 06:27 PM
Why aren't my images sharper??? deludel Pentax DSLR Discussion 91 08-01-2009 03:10 AM
Shouldn't this be sharper Part 2 FHPhotographer Pentax SLR Lens Discussion 7 01-18-2009 02:21 PM
Shouldn't this be sharper? FHPhotographer Pentax SLR Lens Discussion 17 01-17-2009 07:20 PM
What is sharper karq Pentax SLR Lens Discussion 6 10-25-2008 02:17 AM



All times are GMT -7. The time now is 02:03 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top