All Forum Comments
Comment by Clarky posted on 16-50 new arrival at 30/01/2008 - 16:21
Quote:
Is the Sigma available in Pentax fit? I haven't seen it in a Penta fitting? Also unlikely to have HSM for Pentax, even if it fits. Go for the Pentax.
I have looked into it and the new version will be available in the pentax mount. Is the Sigma available in Pentax fit? I haven't seen it in a Penta fitting? Also unlikely to have HSM for Pentax, even if it fits. Go for the Pentax.
I know the K10 doesn't support HSM but i am not that fussed with that aspect.
I really like the extra length the Sigma will give. If only Pentax will give a definitive answer on when the DA60-250 will be available
Comment by Clarky posted on 16-50 new arrival at 30/01/2008 - 12:22
Quote:
Have you won the pools, Clarky?
Anyway, have fun.
G
Spending all my X-mas cash and gift vouchors George Have you won the pools, Clarky?
Anyway, have fun.
G
And i am not finished yet either, so while i am here i will get your opinion as well as the forums on another lens i have been looking at.
I was very close to getting the DA 50-135 also as i want a good medium size zoom but i have looking very closely at the New Sigma APO 70-200mm F2.8 II EX DG MACRO HSM and have been weighing each of them up.
Price of the sigma is about the same as the pentax but the sigma is a fair bit heavier and bigger.
The sigma won't be available in Australia for another 8weeks but i can wait as i will need to sell some of my kit to raise the funds.
The most important part is what is the optical quality of the sigma compared to the pentax, would it be a good substitute for the pentax, I am still not sure.
What are your thoughts :
Comment by Clarky posted on 16-50 new arrival at 30/01/2008 - 09:41
Just arrived this morning my new DA16-50. Haven't had time too try it out yet but hope too on the weekend. My first star lens It sure is a sweet looking piece of kit and the AF is super silent
I am still waiting for delivery of my Sigma Bigma
I am still waiting for delivery of my Sigma Bigma
Comment by Clarky posted on 16-50 new arrival at 30/01/2008 - 08:56
Quote:
Is it possible to lubricate or clean the action?
Don't put any lubricant onto or in the lens what so ever Is it possible to lubricate or clean the action?
If any of it gets onto the elements or the aperture blades the lens will be history.
You would probably need to get it professionally cleaned but i don't know if that would be economically viable, the cleaning may cost more than the lens is worth.
If its not too bad you may have to live with it or get another off e-bay. I just ran a search and there are several listed for very little money.
Good luck and don't forget to post a few pics
Comment by Clarky posted on books/advice at 31/01/2008 - 08:43
Quote:
As far as I know, nobody has ever attempted a 300/f1 - now that would be an absolute monster!!
It would have a front element the size of a manhole cover As far as I know, nobody has ever attempted a 300/f1 - now that would be an absolute monster!!
Comment by Clarky posted on books/advice at 30/01/2008 - 10:20
Quote:
Hi Jeff, if nobody asked questions then forums like this would wither and die so keep it up
I don't have a particular recommendation book-wise but if you pop to your local library and get a book on general photography technique that should do the trick. The basics haven't changed in over 100 years so don't worry if it's not a particularly recent book (fat chance of that in most libraries anyway) so have a browse and get one you feel comfortable with.
George's info above is spot on regarding speed; I'd love a 300mm lens that opens up to f2.8 but they cost an arm and a leg - that's why I have the Tamron. At 300mm it's "only" f5.6 maximum but as long as the conditions are bright that's plenty enough to capture fast-moving bikes - just don't expect results in dimmer conditions to be as easily obtainable.
Just for reference, the apertures for a lens (widest/fastest first) are:
f1 - f1.4 - f2 - f2.8 - f4 - f5.6 - f8 - f11 - f16 - f22 - f32
You can't buy an f1 lens in Pentax mount (and mortals like us wouldn't be able to afford it if they made one) and anything 300mm long with an aperture of f1.4 or f2 would weigh a ton. A f2.8 would be very expensive and quite heavy at 300mm (but good if you could find one), a f4 slightly cheaper and lighter and then we have the f5.6 which is a good compromise being cheap, light and - as I said before - medium paced.
Good luck anyway!
Very well explained Hefty, You should write a book Hi Jeff, if nobody asked questions then forums like this would wither and die so keep it up
I don't have a particular recommendation book-wise but if you pop to your local library and get a book on general photography technique that should do the trick. The basics haven't changed in over 100 years so don't worry if it's not a particularly recent book (fat chance of that in most libraries anyway) so have a browse and get one you feel comfortable with.
George's info above is spot on regarding speed; I'd love a 300mm lens that opens up to f2.8 but they cost an arm and a leg - that's why I have the Tamron. At 300mm it's "only" f5.6 maximum but as long as the conditions are bright that's plenty enough to capture fast-moving bikes - just don't expect results in dimmer conditions to be as easily obtainable.
Just for reference, the apertures for a lens (widest/fastest first) are:
f1 - f1.4 - f2 - f2.8 - f4 - f5.6 - f8 - f11 - f16 - f22 - f32
You can't buy an f1 lens in Pentax mount (and mortals like us wouldn't be able to afford it if they made one) and anything 300mm long with an aperture of f1.4 or f2 would weigh a ton. A f2.8 would be very expensive and quite heavy at 300mm (but good if you could find one), a f4 slightly cheaper and lighter and then we have the f5.6 which is a good compromise being cheap, light and - as I said before - medium paced.
Good luck anyway!
BTW who did make that f1 you mentioned :
Comment by Clarky posted on books/advice at 30/01/2008 - 09:53
Quote:
Anybody can see Mr. Ist entring image?
Please replay.
Thanks.
Best regards.
________________
Dirk TROTTEYN.
K10D+ Sigma 18-50 1:2.8 DC; DA 10-17 fish-eye.
Image counter: 4736.-
Dirk i can't see it either Anybody can see Mr. Ist entring image?
Please replay.
Thanks.
Best regards.
________________
Dirk TROTTEYN.
K10D+ Sigma 18-50 1:2.8 DC; DA 10-17 fish-eye.
Image counter: 4736.-
Comment by Clarky posted on Discussion: Weekly Competition No. 30 "One of My Best Photos at 04/02/2008 - 00:04
Congats to Gwyn great shot, I thought it was in with a big chance
Well judged Dirk a job well done.
Well judged Dirk a job well done.
Comment by Clarky posted on Weekly Competition No. 30 "One of My Best Photos" at 04/02/2008 - 20:33
I couldn't resist this shot of 2 hoverflies mating in flight.
Exif
K10
Tamron 90mm + 31mm extension tube
f8.0
1/90
iso 200
Hand held no flash
Exif
K10
Tamron 90mm + 31mm extension tube
f8.0
1/90
iso 200
Hand held no flash
Comment by Clarky posted on Weekly Competition No. 30 "One of My Best Photos" at 02/02/2008 - 13:38
No contest, really. But if you must have 200mm, the Pentax will disappoint you.
The pentax does look very enticing though.
The only lens i have at 200mm and beyond is my Pentax A 200mm and a Tamron 28-300 which i am not that impressed with beyond 200mm
But i guess i can always use the Bigma (if it ever gets here) if i need something beyond 200mm, but then there is the weight issue,
Oh well i will give it some more thought, thanks anyways