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01-08-2010, 04:18 PM   #1
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some questions regarding DA 55-300

Hey guys i just recieved the 55-300 DA lens. It is an amazing piece of hardware for sure, loving the color contrast and size. One thing that bothers me is that the focus ring sometimes makes a scratching sound while i rotate it. Is this sound okay or is something defective? Like i said it is not all the time, just at a certain angle it makes this sound. Second question is does the 55-300 have better IQ than the kit 18-55?

Thanks in advance ^^

01-08-2010, 04:20 PM   #2
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The sound is as if there are some sand pebbels stuck in the focus ring
01-08-2010, 09:36 PM   #3
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that doesn't sound normal. better have it checked asap.
01-08-2010, 10:07 PM   #4
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I don't manually focus the lens much at all, but haven't heard anything that sounded like scratching when I have - it sounds just like any other lens I have - quiet. My 18-55 lens came with a DS so is the old type. Between my two lenses, the 55-300 wins.

01-08-2010, 10:28 PM   #5
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The 55-300 normally feels slightly gritty when moving the focusing ring but is very smooth and free to move, nothing like pebbles as you've described.

As for IQ - the 18-55 is a different lens and cannot be fairly compared, but it can be said that the 55-300 produces adequately sharp images right through its focus lengths and at all apertures. It also does well with contrast and colours. The same cannot be said about the kit lens on either count.
01-08-2010, 10:30 PM   #6
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No one else has asked...is this the DA L simplified version? If so, it doesnt have quickshift - you can only use MF after toggling the MF switch on the camera - if this is the case those are the gears for AF you are hearing...and you should definitely not be doing it!
01-08-2010, 10:48 PM   #7
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sorry, i'm actually talking about the DA 55-300 not the DAL. Hmm, so I wonder what is causing that sound. I will have to call B&H. The thing is, it's only when the lens is held at a particular angle.
01-09-2010, 09:24 AM   #8
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My non L sounds and feels like little plastic gears turning, no matter what the angle.

Cheers, Mike.

01-09-2010, 01:19 PM   #9
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Okay after having the lens for about 2 days, I can't seem to reproduce the sound, it might just have been a nw lens thing straight out of the factory. Now my next problem is taking steady shots at 300mm lol. I'm practicing all the advise the people here gave me. It'll take some practice. Maybe my hands are just naturally shakey.
01-09-2010, 02:28 PM   #10
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the 55-300 is better than the 18-55 as it's IQ is really good from wide open to F10 at all FL'S which equates to a bloody good lens considering how the 18-55 performs from 5.6 to f10

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01-10-2010, 02:05 PM   #11
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QuoteOriginally posted by joodiespost Quote
Okay after having the lens for about 2 days, I can't seem to reproduce the sound, it might just have been a nw lens thing straight out of the factory. Now my next problem is taking steady shots at 300mm lol. I'm practicing all the advise the people here gave me. It'll take some practice. Maybe my hands are just naturally shakey.
Without SR on, the rule of thumb for shutter speed is 1/focal length in secs (at 35mm equivant).
Equals to 1/(300 x 1.5) = 1/450s. Also your DOF at 300mm is very shallow wide open. Consider closing it 1 or 2 stops.
SR should give you 2 or 3 stops extra.

So how are you doing at 1/125s and f8? Does that work for you?

- Bert
01-10-2010, 02:09 PM   #12
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QuoteOriginally posted by bymy141 Quote
Without SR on, the rule of thumb for shutter speed is 1/focal length in secs (at 35mm equivant).
Equals to 1/(300 x 1.5) = 1/450s. Also your DOF at 300mm is very shallow wide open. Consider closing it 1 or 2 stops.
SR should give you 2 or 3 stops extra.

So how are you doing at 1/125s and f8? Does that work for you?

- Bert
Thanks Bert, i seem to be getting better at taking steadier shots. As this is my first camera period, I will need to practice and practice. I am also awaiting the final firmware for the K-x ie, 1.02. Seems like these two will really help me out in this area.

Joseph
01-10-2010, 05:16 PM   #13
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At 300mm, shoot with a monopod. Even adhering to the rule of thumb in terms of shutter speed, the difference you'll get in terms of image sharpness compared with hand holding is noticeable from my experience.
01-10-2010, 05:32 PM   #14
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QuoteOriginally posted by creampuff Quote
At 300mm, shoot with a monopod. Even adhering to the rule of thumb in terms of shutter speed, the difference you'll get in terms of image sharpness compared with hand holding is noticeable from my experience.
Thanks Dennis. BTW, I really like your website, clean elegant and informative. Say, are you Korean or Chinese with that Last name?
01-10-2010, 06:57 PM   #15
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QuoteOriginally posted by joodiespost Quote
Thanks Dennis. BTW, I really like your website, clean elegant and informative. Say, are you Korean or Chinese with that Last name?
Ha, ha, I'm Chinese (but not from the mainland)... as are a lot of other Pentax users...
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