Page 1 of 3 123 LastLast
Results 1 to 20 of 53

Thread: A*300 f2.8

  1. #1

    Default A*300 f2.8

    Thanking Fengwei for his help to bring this lens in from france.

    By far the heaviest lens I have and it weight about 3Kg and handheld almost near impossible for me. So I may be looking for a sturdier tripod with a maybe gimball head, to pan and tilt.

    I used a monfrotto 190 mf4 with giottos M1001, the only tripod and ball head that I use for my macro, insufficient for stability as I could feel.

    A test shot of the lens with a 2X L(rear converter) and that makes it 600 f5.6 mounted.

    TAken at about 400 over meters from my flat, the signboard as the point of focus

    f8 1/40 secs with tripod mounted M mode.



    100 % cropped



    A test shot and c and c welcome. Any tripod to recommend for this beast, low cost if possible

    Long term, to try shooting birds and I know 300mm is insufficient. For a start will give a shot at this focal range.

    otc
    Last edited by otc; 17th March 2010 at 11:14 PM.

  2. #2
    Member reyreina's Avatar
    Join Date
    Dec 2008
    Location
    Singapore, Boon Lay
    Posts
    433

    Default Re: A*300 f2.8

    Hm, how different is the IQ with and without the teleconverter?

  3. #3

    Default Re: A*300 f2.8

    Congrats on this monster lens!


    mho,
    Could have bumped the ISO to 400 to get better shutter speed. Now its only 1/40 and with a non stable tripod, even the mirror flip can introduce camera shake.

    The hazy day does not do full justice to the lens and teleconverter combo.

    Do you have before teleconverter shots? Esp. the same scene with a 100% crop using 300mm and the one using the teleconverter.


    I think its time to go to the zoo

  4. #4

    Default Re: A*300 f2.8

    Congrats on the monster lens.

    The testing shot is a bit under exposed, and the target is way too far away. Test on something at a distance you'd use the lens for (10 to 20m for birds I guess) and see how.

    Looking forward to seeing some bird photos from your new setup soon

  5. #5

    Default Re: A*300 f2.8

    Quote Originally Posted by reyreina View Post
    Hm, how different is the IQ with and without the teleconverter?
    Quote Originally Posted by pinholecam View Post
    Congrats on this monster lens!


    mho,
    Could have bumped the ISO to 400 to get better shutter speed. Now its only 1/40 and with a non stable tripod, even the mirror flip can introduce camera shake.

    The hazy day does not do full justice to the lens and teleconverter combo.

    Do you have before teleconverter shots? Esp. the same scene with a 100% crop using 300mm and the one using the teleconverter.


    I think its time to go to the zoo
    Quote Originally Posted by fengwei View Post
    Congrats on the monster lens.

    The testing shot is a bit under exposed, and the target is way too far away. Test on something at a distance you'd use the lens for (10 to 20m for birds I guess) and see how.

    Looking forward to seeing some bird photos from your new setup soon
    Tks for your feedback. Will be taking with and without teleconverter and at a nearer distance of 20 meters. I need still objects now, not birds I have some shots with/without teleconverter but have not kept the exif. so will be taking notes on exif of the images. For a start, the teleconverter 2XL is a dedicated converter for this manual lens and I do have the 1.4L converter too when I bought my A200 macrof4.

    This monster of a lens can be a peeping tom lens esp with a teleconverter. What the eyes cannot see, you will be able to view thru the lens quite clearly at far distance of say 500 meters

    marcus
    Last edited by otc; 8th March 2010 at 12:26 PM.

  6. #6
    Senior Member creampuff's Avatar
    Join Date
    Jul 2006
    Location
    Dover
    Posts
    5,116

    Default Re: A*300 f2.8

    There's plenty of dust particles, pollutants and haze in our atmosphere. That's gonna affect the apparent sharpness for subjects at long distances. Suggest you shoot something closer and not against the light/backlit.
    You definitely need to go with a stronger tripod/head combo. Maybe a Markins M20 mated with a Gitzo 3 series. A Wimberley gimbal would be good too.

  7. #7
    Senior Member
    Join Date
    Dec 2005
    Location
    "River end"
    Posts
    4,249

    Default Re: A*300 f2.8

    Congrats on the lens! For tripod, you might want to consider the Gitzo 35xx series with gimbal head. Don't forget your cable release and if you are going to use flash, you might want to consider getting a flash extender too.

  8. #8

    Default Re: A*300 f2.8

    Quote Originally Posted by creampuff View Post
    There's plenty of dust particles, pollutants and haze in our atmosphere. That's gonna affect the apparent sharpness for subjects at long distances. Suggest you shoot something closer and not against the light/backlit.
    You definitely need to go with a stronger tripod/head combo. Maybe a Markins M20 mated with a Gitzo 3 series. A Wimberley gimbal would be good too.
    tks Denis, I shall try at shorter distance. Wimberley gimball seems expensive. Any lower cost gimbal or any one try Manda gimball, Cost 350 sing can take wt about 10 kg.

    Quote Originally Posted by istDeS View Post
    Congrats on the lens! For tripod, you might want to consider the Gitzo 35xx series with gimbal head. Don't forget your cable release and if you are going to use flash, you might want to consider getting a flash extender too.
    Tks Desmond. Seems Gitzo is the favourite here. What about benro, much lighter n lower in cost. Is benro more versatile.? Better to hear fr own pentaxian who has experience on this

    marcus

  9. #9
    Senior Member
    Join Date
    Dec 2005
    Location
    "River end"
    Posts
    4,249

    Default Re: A*300 f2.8

    Quote Originally Posted by otc View Post
    Tks Desmond. Seems Gitzo is the favourite here. What about benro, much lighter n lower in cost. Is benro more versatile.? Better to hear fr own pentaxian who has experience on this

    marcus
    For Benro, you might want to talk to Jack from Ben photo. He should be able to advise you.

  10. #10

    Default Re: A*300 f2.8

    Quote Originally Posted by istDeS View Post
    For Benro, you might want to talk to Jack from Ben photo. He should be able to advise you.
    tks, desmond. I have gone down to peninsula to check on benro.


    Took this with the lens without teleconverter. iso bump to 1250 f2.8 and shutter 1/40sec distance about 15 feet. SR on, tripod



    Second shot with 2XL rear converter. iso 1250, same distance, f2.8 and 1/25 secs (still a little underexposed) on tripod, sr on.




    marcus

  11. #11

    Default Re: A*300 f2.8

    Thanks for sharing.
    Doing such test shots can be a real pain (been there done that and certainly don't enjoy doing it; neither am a methodological in it, so I get a mess of results).

    Looks decent from the test shots. Its a bit dark though, which only means that "You gotta have some fun with it in the sun"





    Quote Originally Posted by otc View Post
    tks, desmond. I have gone down to peninsula to check on benro.


    Took this with the lens without teleconverter. iso bump to 1250 f2.8 and shutter 1/40sec distance about 15 feet. SR on, tripod



    Second shot with 2XL rear converter. iso 1250, same distance, f2.8 and 1/25 secs (still a little underexposed) on tripod, sr on.




    marcus

  12. #12

    Default Re: A*300 f2.8

    Tks Pinholecam,

    Wow, its tough to record those info in M-mode. Not used to it.
    Okay, a few I took earlier outdoor, distance about 35 feet.

    2X L converter with A300 f5.6, shutter 1/40 secs iso 200, tripod with SR on




    2 nd shot, f8, 300 mm 2X L converter,, iso 400 shutter 1/30 secs, tripod and n SR On.



    Next 4 shots without teleconverter, just the 300 mm lens.

    f2.8, iso 100 shutter 1/250, SR off/ tripod.



    f5.6 iso 100 shutter 1/125 on tripod SR off



    f8 iso 200 shutter 1/80 on tripod SR off



    Personally, with this dedicated converter, there is some slight degradation of image qualities and the original A300 f2.8 is tact sharp even at f2.8. Yes the teleconverter is usable imho.
    At 2.8, the dof is extremely thin.

    marcus

  13. #13

    Default Re: A*300 f2.8

    Tks Pinholecam,

    Wow, its tough to record those info in M-mode. Not used to it.
    Okay, a few I took earlier outdoor, distance about 35 feet.

    2X L converter with A300 f5.6, shutter 1/40 secs iso 200, tripod with SR on




    2 nd shot, f8, 300 mm 2X L converter,, iso 400 shutter 1/30 secs, tripod and n SR On.



    Next 3 shots without teleconverter, just the 300 mm lens.

    f2.8, iso 100 shutter 1/250, SR off/ tripod.



    f5.6 iso 100 shutter 1/125 on tripod SR off



    f8 iso 200 shutter 1/80 on tripod SR off



    Personally, with this dedicated converter, there is some slight degradation of image qualities and the original A300 f2.8 is tact sharp even at f2.8. Yes the teleconverter is usable imho.
    At 2.8, the dof is extremely thin.

    marcus

  14. #14

    Default Re: A*300 f2.8

    These testing results look pretty good. Now you need to bring the lens and TC out for some birds

  15. #15

    Default Re: A*300 f2.8

    Quote Originally Posted by otc View Post

    Next 4 shots without teleconverter, just the 300 mm lens.

    f2.8, iso 100 shutter 1/250, SR off/ tripod.



    f5.6 iso 100 shutter 1/125 on tripod SR off



    f8 iso 200 shutter 1/80 on tripod SR off


    marcus
    i think there's a mistake labelling the pics here but the rest should be correct..the progressive background blur doesn't match
    Last edited by elavan; 9th March 2010 at 07:35 PM.
    D3|Tokina 28-70 f2.6-2.8|Samyang 14mm f2.8|K-7|Tamron17-50 f2.8|manfrotto190XproB
    Gallery

  16. #16

    Default Re: A*300 f2.8

    Quote Originally Posted by elavan View Post
    i think there's a mistake labelling the pics here but the rest should be correct..the progressive background blur doesn't match
    Tks, elavan.. you are right. the last image should be f2.8 with a creamier bokeh.

    I am a noob when comes to making comparison. I shall leave it as it is.

    marcus

  17. #17
    Senior Member nik34's Avatar
    Join Date
    Aug 2007
    Location
    AMK Singapore
    Posts
    2,445

    Default Re: A*300 f2.8

    Wow! congrat to you OTC.

    I guess you are the only 1 got this monster lens right?

    Going for birding shoot call me along but not now,cos i on MC..

    Enjoy your lens..Cheers!
    PENTAX l OldKMan

  18. #18

    Default Re: A*300 f2.8

    Quote Originally Posted by nik34 View Post
    Wow! congrat to you OTC.

    I guess you are the only 1 got this monster lens right?

    Going for birding shoot call me along but not now,cos i on MC..

    Enjoy your lens..Cheers!


    Lawrence, I was a little slow in picking f 300 f4.5 from desmond. So ended with this monster lens.

    Handheld is not possible for me cos it more than 3kg with the camera and rear converter..

    Once tripod and gimball is ready, will get in touch. Meanwhile take care and rest more.


    marcus
    otc

  19. #19
    Member seefei's Avatar
    Join Date
    Mar 2008
    Location
    West Coast
    Posts
    1,708

    Default Re: A*300 f2.8

    can show some pic of the monster?
    shoot to remember. flickr

  20. #20
    Member
    Join Date
    May 2009
    Location
    Singapore
    Posts
    1,043

    Default Re: A*300 f2.8

    Hi marcus, thanks for showing the those test shots. I bet it's going to turn out beautiful once you use it for birds shooting!
    Charlie Tan loves his SMC 大姑妈
    deviantART | flickr

Page 1 of 3 123 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •