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Sigma 70-200mm F2.8 EX DG OS HSM Lens - Pentax Fit

Mannesty
Posted 17/10/2012 - 09:46 Link
Mike-P wrote:
Is your 60-250mm too slow Peter?

I'm not sure Mike. I didn't have it with me at the last race meeting but I'll take it to the next one on Sunday and give it a try out.

I have used it before when the light was better a month or so ago.

Problem is that racing doesn't start until 7PM (or when the ambulance gets there, elph 'n saphety, init) and this time of year I have about 1 hour of sun, and that's quite low in the sky.
Peter E Smith - flickr Photostream
Edited by Mannesty: 17/10/2012 - 09:48
Mike-P
Posted 17/10/2012 - 12:00 Link
Didn't think they did health and safety in Spain yet
Mannesty
Posted 17/10/2012 - 13:26 Link
Rules is rules and I agree, health & safety doesn't feature much in spanish working life, but it does on the race track (well, mostly).
Peter E Smith - flickr Photostream
Mike-P
Posted 17/10/2012 - 14:19 Link
PM sent with sample shots at 200mm f2.8 as requested.
Mannesty
Posted 18/10/2012 - 17:17 Link
One more question for users of the Sigma 70-200mm F2.8 EX DG OS HSM Lens together with Lightroom 4 (LR):-

Is the lens correctly identified by LR and does the actual focal length used get recorded in EXIF data?
Peter E Smith - flickr Photostream
Mike-P
Posted 18/10/2012 - 17:22 Link
Why don't you just use one of the files I uploaded to find out?
Mike-P
Posted 18/10/2012 - 17:26 Link
Taken wide open after a little (-3) af adjustment on the K-5

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Mannesty
Posted 18/10/2012 - 17:32 Link
Mike-P wrote:
Why don't you just use one of the files I uploaded to find out?

Doh.

EXIF data shows 200mm as well as other exposure info, but lens is not recognised.
Peter E Smith - flickr Photostream
Edited by Mannesty: 18/10/2012 - 17:34
Mannesty
Posted 19/10/2012 - 08:46 Link
The image of your dog certainly looks sharp enough to me Mike, thanks.
Peter E Smith - flickr Photostream
Mannesty
Posted 21/10/2012 - 23:41 Link
One more question before I decide whether or not to buy this lens.

I need to know whether any AF offset that might be needed will be correctly applied to this lens.

The K5 (and other bodies) can store AF adjustments for up to 20 lenses. Given that I have determined that Sigma lenses are not identified by name in Lightroom, if I were to have more than one Sigma lens, will AF adjustments that I set for one Sigma lens be applied to all Sigma lenses rather than each lens have individual adjustments stored on the K5.

I ask because I already have a Sigma 180mm Macro lens.

If any of you have more than one Sigma lens, could I ask you to check and let me know please.
Peter E Smith - flickr Photostream
Edited by Mannesty: 21/10/2012 - 23:42
Mike-P
Posted 28/11/2012 - 12:09 Link
So how you getting on with the Sigma Peter?

I took mine out this morning and am really pleased with the way it performed on the K-5. I am more than happy to shoot everything at f2.8.
MattMatic
Posted 28/11/2012 - 12:56 Link
FWIW, there's a very useful list of the ID tags embedded in the various lenses here.

Where there is an overlap of lenses, you'll see a dotted number, e.g. '4 45', '4 45.1' and '4 45.2' show that the actual ID of '4 45' could be any one of these lenses: "Tamron Lens (4 45)", "Tamron 28-300mm F3.5-6.3 Ultra zoom XR", or "Tamron AF 28-300mm F3.5-6.3 XR Di LD Aspherical [IF] Macro" and you won't be able to tell which is which.

The ID '3 255' refers to ten different Sigma lenses!

The camera will use the Lens ID marker for the AF adjustment, and you'll only have a problem if you own two lenses with the same ID

e.g. this little group:
Quote:
'8 255' = Sigma Lens (8 255)
'8 255.1' = Sigma 70-200mm F2.8 EX DG Macro HSM II
'8 255.2' = Sigma APO 150-500mm F5-6.3 DG OS HSM
'8 255.3' = Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye
'8 255.4' = Sigma 50-200mm F4-5.6 DC OS

Matt
http://www.mattmatic.co.uk
(For gallery, tips and links)
Edited by MattMatic: 28/11/2012 - 12:57
Mannesty
Posted 28/11/2012 - 17:43 Link
Mike-P wrote:
So how you getting on with the Sigma Peter?

I've used it at one race meeting so far with mixed results, but I put that down to me, not the lens.

I'm thinking I might need the low light focus abilities of the K5 II or K5 IIs.

I haven't been able to use it much in proper daylight yet but I'll let you know when I have had a decent play with it.

I'll put a few of the images I' have taken with it onto Flickr tonight with a link later.
Peter E Smith - flickr Photostream
Mannesty
Posted 28/11/2012 - 17:46 Link
MattMatic wrote:
FWIW, there's a very useful list of the ID tags embedded in the various lenses here.

Where there is an overlap of lenses, you'll see a dotted number, e.g. '4 45', '4 45.1' and '4 45.2' show that the actual ID of '4 45' could be any one of these lenses: "Tamron Lens (4 45)", "Tamron 28-300mm F3.5-6.3 Ultra zoom XR", or "Tamron AF 28-300mm F3.5-6.3 XR Di LD Aspherical [IF] Macro" and you won't be able to tell which is which.

The ID '3 255' refers to ten different Sigma lenses!

The camera will use the Lens ID marker for the AF adjustment, and you'll only have a problem if you own two lenses with the same ID

e.g. this little group:
Quote:
'8 255' = Sigma Lens (8 255)
'8 255.1' = Sigma 70-200mm F2.8 EX DG Macro HSM II
'8 255.2' = Sigma APO 150-500mm F5-6.3 DG OS HSM
'8 255.3' = Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye
'8 255.4' = Sigma 50-200mm F4-5.6 DC OS

Matt

Thanks Matt. I'm wondering if there is a way to update Lightroom's lens ID database with our own lens descriptions. Anybody know if this is possible?
Peter E Smith - flickr Photostream
Mannesty
Posted 28/11/2012 - 18:14 Link
Here's some taken at f2.8, 1/180th, ISO800 processed in Lightroom.

ND Grad added, darkest at bottom, to 'dumb' down the flash. A bit of sharpening and noise removal, cropped. That's about it.

I'm about 20-30 feet away from the cars and standing behind a tyre wall and steel barrier, and trying to carry out my marshal duties as well.

This first image has had a bit more work done on it to bring out the sky because it was almost dark when I took this. The racing team wants a copy of it too so I thought I'd better put some effort into it

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K21_3494.jpg by Peter E Smith (AKA Mannesty), on Flickr

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K51_8090.jpg by Peter E Smith (AKA Mannesty), on Flickr

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K51_8093.jpg by Peter E Smith (AKA Mannesty), on Flickr

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K51_8105.jpg by Peter E Smith (AKA Mannesty), on Flickr

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K51_8106.jpg by Peter E Smith (AKA Mannesty), on Flickr

C&C welcome because I'm sure this lens is more proficient than I am. Only two race meetings left for this year though, we start again in Feb '13.
Peter E Smith - flickr Photostream
Edited by Mannesty: 28/11/2012 - 18:20

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