Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-31-2013, 11:25 PM   #211
Senior Member
MarinatedHerring's Avatar

Join Date: Dec 2012
Posts: 118
Nikon 28mm f/2.8 AI-s

Took some long exposure photos with my best Nikon lens.

Nikon 28mm f/2.8 AI-s. Apparently this is Nikon's sharpest wide angle manual focus lens from what I've read in several places. I haven't had the chance to use it so much in day light since I've been taking photos of birds and use 105mm or 200mm

ISO 125, F/5.6 / 2 second exposure



100% Crop



02-01-2013, 06:25 AM   #212
Loyal Site Supporter




Join Date: May 2011
Location: Richmond, Virginia USA
Photos: Gallery | Albums
Posts: 2,639
i'm hoping that i can get some shots of merganser ducks that like to sit far outside my range even with the 500....now i got the q

by the way what is everyone doing to not get purple fringing...
02-01-2013, 08:58 AM   #213
Veteran Member
crewl1's Avatar

Join Date: Jul 2010
Location: Los Angeles, CA
Photos: Gallery | Albums
Posts: 9,795
Original Poster
QuoteOriginally posted by pearsaab Quote
i'm hoping that i can get some shots of merganser ducks that like to sit far outside my range even with the 500....now i got the q

by the way what is everyone doing to not get purple fringing...
For some lenses PF can be reduced by stopping down, but each lens has different behavior on the Q.
There are some lenses that have well controlled CA/PF on the Q, and others that show it real bad.

The DA*300 does not show PF, and in my experience the Sigma 70-200 HSM II is also very clean.

The DA*200 has an issue with it, as do many older lenses.

That's the reason for this thread, to see what folks are running into with the various lenses they are trying.
02-01-2013, 09:20 AM   #214
Senior Member
MarinatedHerring's Avatar

Join Date: Dec 2012
Posts: 118
To avoid purple fringing with my older lenses I just try not to take photos where there are too many subjects at different depths. This is where the fringing occurs I think because it is more noticeable when the subject is out of focus. I could be wrong but I rarely get PF when I'm shooting one subject that is completely in focus.

02-01-2013, 11:13 AM   #215
Veteran Member




Join Date: Jan 2010
Location: Durham, nc
Photos: Albums
Posts: 891
DAL 18-55mm f3.5-4.5

Strangely enough, this lens is quite usable on the Q. It has no PF to speak of, and takes well to being stopped down.

First off, wide open it behaves like a soft-focus lens. Highlights glow, and the image seems otherworldly. Moreso at 18mm than 55mm, but both exhibit the same glowing effect. The lens is very soft here, obviously. It's still soft when stopped down one click, but really sharpens when stopped down two clicks.

My approximation is that one click is f4.5 at 18mm, and f8 at 55mm. Two clicks is around f6.3 at 18mm and f11 at 55mm. I didn't go beyond two clicks.

At 55mm and two clicks, which is about f11, the photo clearly shows considerably more detail than the f8 shot. Which is surprising, I'd expect diffraction to be hitting hard at f11.

18mm wide open


18mm one click


18mm two clicks


55mm wide open


55mm one click


55mm two clicks



Charles.
02-01-2013, 06:58 PM   #216
Site Supporter
Shanti's Avatar

Join Date: Jul 2012
Location: Western Denmark
Photos: Gallery | Albums
Posts: 903
Pf ca

QuoteOriginally posted by crewl1 Quote
For some lenses PF can be reduced by stopping down, but each lens has different behavior on the Q.
There are some lenses that have well controlled CA/PF on the Q, and others that show it real bad.

The DA*300 does not show PF, and in my experience the Sigma 70-200 HSM II is also very clean.

The DA*200 has an issue with it, as do many older lenses.

That's the reason for this thread, to see what folks are running into with the various lenses they are trying.
HI can you explain why one of my swan pics has none and the next one is very bad,from my last post here
02-01-2013, 07:23 PM   #217
Senior Member
MarinatedHerring's Avatar

Join Date: Dec 2012
Posts: 118
My guess (and I do mean guess) would be that if it is the same settings then it would have to be the subject. The swans look greyer (maybe they were in a shadow) in the first one. In the 2nd photo they are of a much higher contrast. Perhaps this is causing the purple fringing?
02-01-2013, 11:10 PM   #218
Veteran Member
crewl1's Avatar

Join Date: Jul 2010
Location: Los Angeles, CA
Photos: Gallery | Albums
Posts: 9,795
Original Poster
QuoteOriginally posted by Shanti Quote
HI can you explain why one of my swan pics has none and the next one is very bad,from my last post here
In the second pic if you look closely at right swan there appears to be camera shake that is showing up as a purple ghost.

Also since the second pic is at higher shutter the light was brighter so that could also be part of the reason.

Perhaps run some tests using a tripod on solid ground?

02-02-2013, 07:56 PM   #219
Veteran Member
crewl1's Avatar

Join Date: Jul 2010
Location: Los Angeles, CA
Photos: Gallery | Albums
Posts: 9,795
Original Poster
Thanks for the recent reviews everyone. Finally got around to updating the index.
Adam created a program that will sort the lenses and group based on categories.
At the moment the categories are K-Mount Prime, K-Mount Zoom, and Other Mount.
If your lens appears in the wrong category please let me know here or via PM.
Also let me know if it looks like we need to break things down more as the list grows.
Thanks.
02-02-2013, 09:12 PM   #220
Site Supporter




Join Date: Sep 2007
Location: Victoria, BC, Canada
Photos: Gallery
Posts: 154
QuoteOriginally posted by crewl1 Quote
Thanks for the recent reviews everyone. Finally got around to updating the index.
Adam created a program that will sort the lenses and group based on categories.
At the moment the categories are K-Mount Prime, K-Mount Zoom, and Other Mount.
If your lens appears in the wrong category please let me know here or via PM.
Also let me know if it looks like we need to break things down more as the list grows.
Thanks.
Links in the index on page 1 seem to be broken now
02-02-2013, 09:13 PM   #221
Senior Member
MarinatedHerring's Avatar

Join Date: Dec 2012
Posts: 118
QuoteOriginally posted by Hornet Quote
Links in the index on page 1 seem to be broken now
Yes, they all seem to forward us to the home page of the forum.
02-02-2013, 09:16 PM   #222
Veteran Member
crewl1's Avatar

Join Date: Jul 2010
Location: Los Angeles, CA
Photos: Gallery | Albums
Posts: 9,795
Original Poster
OK thanks - let me check into it.

Edit: Think it is fixed now.

Last edited by crewl1; 02-02-2013 at 09:38 PM.
02-02-2013, 11:53 PM   #223
Senior Member




Join Date: Jun 2010
Location: San Diego
Photos: Gallery | Albums
Posts: 166
SMC-P FA 50mm f2.8 Macro

The FA 50mm macro doesn't seem to be on the list yet. These images were coupled to a Fotodiox PK(AF)-P/Q adapter; handheld.




02-03-2013, 12:06 AM   #224
Senior Member




Join Date: Jun 2010
Location: San Diego
Photos: Gallery | Albums
Posts: 166
SMCP-FA 77mm f1.8 Limited

And the FA 77 with Fotodiox adapter (Very nice Q combo).



02-03-2013, 08:41 AM   #225
Pentaxian
MegaPower's Avatar

Join Date: May 2010
Location: Hong Kong / Irvine, CA
Photos: Gallery | Albums
Posts: 562
I posted FA*80-200 in the other thread.
The Sigma 30/1.4 will be coming soon.
I got very good night image @f4 and f5.6. (The lens is optimums from f.2.8-5.6)
I accidently deleted the good picture and then the battery depleted...
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!
200mm, 50mm, adapter, auto, camera, f1.8, f2.8, flickr, focus, hawk, infinity, lens, macro, mirrorless, pentax, pentax q, pentax q10, pentax q7, q-s1, q10, q7, shot, shots, smc
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Has anyone tried Canon lenses on the Q/Q10? NeilGratton Pentax Q 14 05-31-2013 09:03 AM
Ideas on diffusing the onboard flash of the Q? Tonto Pentax Q 28 05-19-2013 11:46 AM
Pentax Q lenses tested by Photozone Mistral75 Pentax Q 9 11-16-2011 12:11 PM
Dumb Question: Adapted Leica lenses on film bodies? Why not??? DanielT74 Pentax SLR Lens Discussion 10 10-26-2011 12:05 AM
Could Pentax sell you on the Q if they had better lenses? devorama Pentax Compact Cameras 17 06-29-2011 09:34 PM



All times are GMT -7. The time now is 11:52 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