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03-16-2012, 02:33 AM   #1
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pentax 55-300 out of focus

I just bought a Pentax DA55-300 ed from ebay this is a lens I have been saving up for for some time and really want so I was very disappointed with the results picture at 300mm f6.7 spot metering and focus 200 IO this is the best of 3 taken with support so i tried the same with my 70 200 takumar and the result was much much better . The person I bought from has promised a full refund but I am just shocked that the picture could be this bad any comments (this is a 100% crop)

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03-16-2012, 03:13 AM   #2
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Hmmm....have the 100% crop printed on a large canvas and tell people it's a long lost Monet!

But seriously, it's possible one the elements is not seated correctly...i.e. lens may have been dropped? You can only speculate. Good thing the seller offers a refund.
03-16-2012, 03:38 AM   #3
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Wow

You mean I could be rich!!!!!!!!!!!
03-16-2012, 04:09 AM   #4
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Were you closer than the minimum close focusing distance for this lens? As I recall it is about 1.4 meters for this lens.

03-16-2012, 04:48 AM   #5
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This was taken with the DA 55-300 @ 300 mm f/5.8 @ 1/320 ISO 640. It is one of my favorite lenses. Here are a few thoughts on yours:

1. Focus was off?
2. Closer than min focus distance (see #1)?
3. Bad lens?
4. Bad focus sensor in camera?
5. Camera focus out of calibration? (I had to send my K-r in for service to get the focus re calibrated)
6. Dirty lens?
7. Somebody magically appeared in front of you holding a frosted piece of glass???

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03-16-2012, 05:00 AM   #6
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I see missed focus, and some possibility of SR induced blur while using a tripod. There also seems to be some of the characteristic smudginess of a poor-quality UV filter on the lens.

Also pls post the full image (reduced in size of course, like ablundon's eagle) just so we can see the issue in context.

I've shot thousands of pix with the DAL 55-300 and used properly it is a very satisfactory piece of glass. Pic related:


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03-16-2012, 05:59 AM   #7
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My son has one and it performs great and the item in the photograph is about 30 meters away, I have tried it at all focal lengths and all are out of focus to some degree
03-16-2012, 07:37 AM   #8
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QuoteOriginally posted by telegazz Quote
I have tried it at all focal lengths and all are out of focus to some degree
Aha. OK, assuming everything else is OK, your copy of the lens may be damaged.
It happens. Get another copy - even one of the DAL versions available new off eBay for about AUD$250 - and try again.

03-16-2012, 08:15 AM   #9
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I'd still say you should post an original image, not just a crop. Obviously, don't use a filter, but do use a hood, and be sure you are not shooting in conditions where subject motion is an issue.

As it is, it is just impossible to tell if this is a simole case of the camera happening to have focused somewhere else within range of the focus sensor you selected; it's also impoosible to say how much of what we're seeing is the result of wind, flare, or just a poor quality filter.
03-16-2012, 02:13 PM   #10
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attached photo was taken from a distance of 5 meters on a tripod no filter with lens cap i took a series of photos at different focal lengths this was @ 200mm but is no better or worse than any of the others the image is JPEG straight out of the camera no crop . I have also done the same with other lenses the results are crisp so I will be returning this lens for a refund and keep on looking.

Has any one had dealing''s with SHUEIDO CAMERA'S they have DA-L 's from broken kits at reasonable prices

thanks again for all your help
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03-16-2012, 04:48 PM   #11
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QuoteOriginally posted by telegazz Quote
attached photo was taken from a distance of 5 meters on a tripod no filter
Hmm. Looks a bit soft but there may still be some issues of simple technique.
The light here is poor, aperture is f5.6, and the shutter speed you used is also too slow for the focal length you used. The 55-300 is at it's weakest wide-open, as are most lenses. Re-shoot something more contrasty, at a higher shutter speed (1.5x the focal length at least), and choose f8 or f9. On a stable tripod again. Then re-evaluate sharpness.

QuoteOriginally posted by telegazz Quote
Has any one had dealing''s with SHUEIDO CAMERA'S they have DA-L 's from broken kits
If they are eBay sellers based in Taiwan, I think that's where I got my DAL 55-300. It was cheap too.
03-16-2012, 05:17 PM   #12
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Indeed, looks like plain and simple camera shake to me. Although posting a crop from this image - find the leaf/blade the camera actually focused on and crop to it - would help say for certain.
03-16-2012, 06:03 PM   #13
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QuoteOriginally posted by telegazz Quote
Has any one had dealing''s with SHUEIDO CAMERA'S they have DA-L 's from broken kits at reasonable prices
Being you are in Australia, I don't know how the shipping or duty would be, but Adorama sells a "grey market" version of the DAL 55-300 for $240

21897 Pentax SMC P-DAL 55-300mm f/4.0-5.8 ED Auto Focus Telephoto Zoom Lens

I am looking for a DAL 55-300 myself. The regular DA 55-300 is one of my favorite lenses, and I want the "L" version now also to use on my K-x for the lightest weight.
03-16-2012, 07:05 PM   #14
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Hard to say. It's not impossible to shoot 210mm on APS-C hand-held at 1/180s, but it takes a steady hand and good technique. Try again in better light, so that you can get the shutter time down to below 1/(focal length * 1.5). That, or use a tripod to eliminate that source of blur altogether. Err... I now see that's essentially what rawr told you already.
03-16-2012, 08:25 PM   #15
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The last shot was on a tripod taken early morning no wind hence the bad light at 210mm (same camera same set up on takumar 70-200 @200mm crisp and clear) I tried to eliminate operator error as much as possible
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