Visit MPB Visit MPB Visit MPB

F* 300 f4.5 or DA * 300 f4?

Posted 09/11/2011 - 10:03 Link
Anybody able to offer a direct comparison of above?
Am aware of the differeces in weight and weathersealing, but how do the different focus mechanisms compare?

K5 + 8mm-500mm zooms and primes
Please feel free to play with any images I post.
My flickr: link
Posted 09/11/2011 - 10:08 Link
No weather sealing on F* and screw focus compared to SDM (actually faster imo) IQ wise there is very little, if anything in it.

F* 880g LINK gets 100%

DA* 1160g with hood LINK (F* has built in hood) and gets 9.75%
Edited by Mike-P: 09/11/2011 - 10:09
Posted 09/11/2011 - 10:09 Link
The DA is slightly sharper wide open. Not much in it stopped down.
It's also faster and quieter focusing. Works well with the 1.7AF
Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Posted 09/11/2011 - 10:11 Link
The DA* 300mm I tried wasn't faster focusing, if anything the SDM (as usual) was slower. Certainly quieter though.

Both work well with the 1.7x af.
Posted 09/11/2011 - 13:00 Link
TBH do not like the 1.7x af
Tried one for a few months, never realy got on with it,I am aware of it`s perceived desirability in Pentax world, but as i say not for me.

I have a 1.5x (cannot remember all the letters) that works well with SDM and screwdrive, it even works with my 18-135 WR.
Will pair that with the 300mm when I decide what to go for, atm I do not need weatherproofing so the F* is favourite, however will know next week if I am going to spend some time in a tropical rainforrest, if so then the DA* will probably be required.

K5 + 8mm-500mm zooms and primes
Please feel free to play with any images I post.
My flickr: link
Posted 09/11/2011 - 15:34 Link
Personally I'd go for the F* but only because I could use it on my film cameras as well. The DA* doesn't, AFAIK, have an aperture ring.

Kris Lockyear
It is an illusion that photos are made with the camera… they are made with the eye, heart and head. Henri Cartier-Bresson
Lots of film bodies, a couple of digital ones, too many lenses (mainly older glass) and a Horseman LE 5x4.

My website
Posted 09/11/2011 - 16:25 Link
DA* 300/4 - 1.4m - 77mm - D=83mm - L=184 mm - 1070g - weather sealing - no aperture ring - SDM - separate hood - tripod mount - 1:4

FA* 300/4.5 - 2m - 67mm - D=73mm - L=160mm - 935g - no weather sealing - aperture ring - screw AF - separate hood - no tripod mount - 1:6

F* 300/4.5 - 2m - 67mm - D=84mm - L=160mm - 880g - no weather sealing - aperture ring - screw AF - integrated hood - (removable) tripod mount - 1:6

FA* on K10D:
DA* on K-5:

I own the FA*.
Posted 09/11/2011 - 16:36 Link
I tried the FA* and the DA* side by side. The FA* was fractionally faster focusing (no doubt here) however the DA* is fractionally sharper. What swung it for me though was not the WR but the near silent focusing, the FA* is rather noisy and probably not the best for birds within close proximity that could be disturbed by the sound.

I know that's not the F* but near enough. Pentax. Pentax DA*300/4, Cosina 55/1.2, Lens Baby Composer Pro & Edge 80, AFA x1.7, Metz 50 af1.
Nikon. D800. D600. Sigma 500/4.5, Nikon 300/2.8 VRII, Sigma 120-300/2.8, Zeiss Distagon ZF2 21/2.8, Zeiss Distagon ZF2 35/2.0, Sigma 50/1.4, Nikkor 85/1.8, Nikon TC20EIII, Nikon TC14EII, Kenko x1.4, Sigma 2.0

Add Comment

To leave a comment - Log in to Pentax User or create a new account.