Search results for 'sensor cleaning' - page 141
Pentax A* 300mm and Lens Repairs
I'll get it serviced and try again later. You'll be lucky. I sent Asahi Photo an email several days ago asking for an estimated cost for cleaning mine, they haven't bothered replying yet. If you find someone who does a good job let me know:D
Posted by fatspider on 23/01/2012 - 20:41
Pentax A* 300mm and Lens Repairs
I sent Asahi Photo an email several days ago asking for an estimated cost for cleaning mine, they haven't bothered replying yet. I asked them about servicing my F* 300mm before I put it up for sale and they don't touch * lenses.
Posted by Mike-P on 23/01/2012 - 20:44
Pentax A* 300mm and Lens Repairs
I sent Asahi Photo an email several days ago asking for an estimated cost for cleaning mine, they haven't bothered replying yet. I asked them about servicing my F* 300mm before I put it up for sale and they don't touch * lenses. Even said the same about the mounting foot on my DA*300
Posted by bforbes on 23/01/2012 - 21:06
Pentax A* 300mm and Lens Repairs
Oh boy what a response :) I was thinking of starting a thread about where to send it for cleaning and you have saved me the effort, thanks for all the info. I was going to ask if Asahi but if they won't then perhaps Harrow Technical? . Anyone tried them recently?
Posted by aybee on 24/01/2012 - 18:37
Pentax A* 300mm and Lens Repairs
I asked them about servicing my F* 300mm before I put it up for sale and they don't touch * lenses. Has anyone actually visited Asahi photo? I have. I'm not sure I'd let them touch a lens I own. An old film camera that needs a CLA, perhaps, but anything important, hmmm... They replaced the shut...
Posted by cabstar on 24/01/2012 - 19:08
How good is this Sigma?
1:1 is 1:1. The reproduction on the DSLR APS-C sensor will be "life size" just as it is on the 24x36 film frame. The area covered is a little bit less than 16x24 mm with any 1:1 lens. OP: I use a Pentax M 100/4 macro lens. It is MF, goes only to 1:2 and is manual exposure to boot. I have a 50mm ...
Posted by Canada_Rockies on 01/11/2011 - 16:37
Sigma 10-20mm f4-5.6 & Sigma EF610 DG ST Flash
Thanks Dave- I've had good service from SRS (on stained K5 sensor)- just no free delivery/ discounts on several items. I will follow your advice in future. Cheers, Gary
Posted by Gary Hickin on 03/11/2011 - 19:57
Helios on k20d
Should k20d ask for the focal length Only when SR is turned on. It needs the FL to calculate the amount of sensor shift. it beeped when in focus. K20d does not do any of this is the beep option turned on in the menu? And what will shake reduction help with? Apart from reducing shake? Absolutel...
Posted by davex on 03/11/2011 - 22:12
Seven Lenses
As it happens, I'm in the process of rationalising my lenses down to seven: Sigma 10-20 DA 17-70 FA 50 1.4 DA 55-300 A 50 1.7 A 100 F4 Macro Sigma 50-500 Both my 400mm primes are going. It'll be very sad to say goodbye to both of them, for very different reasons. The Sigma is compact, ...
Posted by ChrisA on 04/11/2011 - 23:51
advice please on 35mm and/or macro lenses
I'm looking for a good standard/wide angle lens maybe 35mm or so of similar quality to my other good lenses, and also a macro lens. I'm tempted by the 35mm f2.8 limited macro since it seems like it might do both things. I'm a little skeptical about such a short focal length for a macro though. OT...
Posted by thomastherhymer on 06/11/2011 - 13:06
Sigma HSM AF
As said; Lots of opinons and preferences for all 3 options can be found with a forum search I understand the science behind lens and sensor SR, simple fact is I can see no observable difference when I leave both of them on. My only problem with lens based SR is image shift, and this is why I o...
Posted by davex on 13/11/2011 - 08:10
Sigma HSM AF
I understand the science behind lens and sensor SR, simple fact is I can see no observable difference when I leave both of them on. Now that's an interesting observation. I'll have to take a closer look at this. I take it you can see a difference between both on and both off?
Posted by ChrisA on 13/11/2011 - 09:50
The cheap 2.4 35mm... or spend elsewhere?
Hey John .... did you know that on picture 1 of 7 the 2nd man from the left has dropped his trousers and you can see his tail! :shock: :mrgreen: :wink: The reflection that's moving to the left is of the candles it's moving because you've moved :shock: No idea what the cause is.... lens or...
Posted by Algernon on 16/11/2011 - 13:42
UWA choices
Thank you all for your advice! I have no experience with UWA on crop sensor other than the wide end of the kit lens, so it is very interesting to read your comments and views on UWA lenses! Do you think that it's because we are getting very used to the 16:9 proportions of out TV screens? I must ...
Posted by bjolester on 27/11/2011 - 17:52
Ultimate collection of lenses that you would like
We may have had this before, but hey, it is getting near Christmas and there are some lenses that we would like in our stocking. So, lets go one further and put down what the ultimate collection of Pentax lenses that you would like to own. Anyone who says "all of them" is not taking this seriously...
Posted by Offertonhatter on 27/11/2011 - 21:35
DA 18-55 WR "better" on K-5 than K-7?
With the improved sensor on the K5, one could argue that all lenses work better on it! John
Posted by JAK on 17/12/2011 - 01:25
DA 18-55 WR "better" on K-5 than K-7?
Hi Guys, I have being using a Pentax 18-55wr on my K20D for the last couple of years with no problem and being getting some very good results, now i have upgraded to a K5 and i would say that the 18-55wr struggles to keep up with the sensor but my sigma 17-70 is fine on both. Needing a weather resis...
Posted by exevalley on 17/12/2011 - 10:40
DA 18-55 WR "better" on K-5 than K-7?
With the improved sensor on the K5, one could argue that all lenses work better on it! John It's probably that the improved ISO results allow 'so-so' lenses like the kit lens to be used at their optimal aperture (f8?) without using slow shutter speeds (and introducing camera shake).
Posted by Pentaxophile on 17/12/2011 - 11:02
Which lens to compliment K5 with 18-135 WR
Used at 24mm, I think it will work for full body portraits (head to feet) but, as the others stated, not for close ups of e.g. the head. A nose, for example, will look bigger which might not be flattering. See e.g. and Great info! I liked the portrait focal length comparison ( ). One thing to ...
Posted by Pentaxophile on 19/12/2011 - 14:00
Sigma 15mm f2.8 Hit or Miss?
The Sigma is a fisheye. The DA15mm is another kettle of fish entirely :wink: What's more the Sigma is designed for full frame. On crop-sensor you won't get a 'full fisheye effect', just a semi-fishy look like the Zenitar 16mm:
Posted by Pentaxophile on 19/12/2011 - 16:10
