Search results for 'back focus' - page 716
Sigma 135-400mm F4.5/5.6 APO DG
If you've got lots of light, which you probably do, relatively speaking, living where you do, then stopped down this lens is ok. Pull it back from 400mm, ideally to <300 when stopped down to between f/8 and f/16 and it becomes very good indeed for the money. My experience of this lens in the ...
Posted by yelvertoft on 26/06/2008 - 18:42
Lenses with Aperture rings
The Tamron I mentioned has a traditional aperture ring, so can be used in the same way that you would use an old Pentax lens. Another alternative would be an auto converter - auto-exposure or even auto-exposure and auto-focus. The fully auto Kenko 1.5X I have works reasonably well with the Tamro...
Posted by iceblinker on 27/06/2008 - 14:31
Pentax or Sigma?
Or to put the spanner in the works, how about the Tamron 90mm? I use the older manual focus version and its a cracking lens.
Posted by Mike-P on 27/06/2008 - 19:42
Safari/Travel lens(es)
Hi, I've been to Zambia on two occasions. A first time in my latter analog days (August 2004 for an expedition around the country, mix of wildlife and development projects) when I used a Tamron 100-300 on a 1.4x converter. Quality of that combination was very bad, although I liked the results ...
Posted by ishpuini on 01/07/2008 - 16:01
Safari/Travel lens(es)
I knew Wim would come through! Making notes myself because I still hope to get back there one day.
Posted by Gwyn on 01/07/2008 - 16:55
Anyone used Cameras2u?
That was quick from Sigma. lets hope Japan gets on and makes it for you now. BTW with a 2x converter it will be an F5.6 I believe. Yes, just been reading about it. It is also possible to use this lens with Sigma 1.4x EX and 2x EX APO Tele-Converter. 1.4x APO EX tele-converter (optional) allows...
Posted by Mike-P on 02/07/2008 - 16:07
Lens Choice
Hi all, hoping you might be able to help me with my dilemna a little (apologies for the length...). Right, I'm a fairly new owner of a K10d having only previously used compacts. Currently nothing beyond the K10d, 18-55 kit lens and memory cards. Kind of photography I'm interested in is I gues...
Posted by wysinawyg on 02/07/2008 - 14:14
Which macro lens?
I would def go for the 100mm version of whichever macro lens you decide on as if you are doing insects you need that extra reach. I would say either the Pentax, Tamron 90mm or Sigma 105mm will all do you just as well tbh. I use both a Tamron 90mm and an old Vivitar 100mm manual focus lens and pref...
Posted by Mike-P on 02/07/2008 - 14:49
Problem with Tamron Macro
I don't have that lens but I'd suggest any lens where the blades don't close down evenly has developed a fault - if it's still under warranty then I'd send it back to Tamron for repair/replacement.
Posted by hefty1 on 02/07/2008 - 18:28
Anyone bought expensive lenses from HK?
Apart from customs, the downside to this is if you need to return the lens. If you can send it to Pentax UK then OK. But if you need to return it to Hong Kong it is more of a pain. I still like to buy from a traditional shop, even though invariably this means more cost. My K10 broke on me with a ...
Posted by pschlute on 04/07/2008 - 11:08
Anyone bought expensive lenses from HK?
Apart from customs, the downside to this is if you need to return the lens. If you can send it to Pentax UK then OK. But if you need to return it to Hong Kong it is more of a pain. I still like to buy from a traditional shop, even though invariably this means more cost. My K10 broke on me with a ...
Posted by Clarky on 04/07/2008 - 11:25
Anyone bought expensive lenses from HK?
Provided you pay all the duties/VAT due on the lens Pentax UK should honour the guarantee (provided of course you provide proof that you have paid them!) - lenses have an international guarantee normally. However if you import marked as a gift or whatever so as to avoid duties then they will not ho...
Posted by Gwyn on 04/07/2008 - 11:39
Anyone bought expensive lenses from HK?
Have bought a 31mm Limited from Canada for £405 and paid £55 when it came into the country, think it should have been more as they misquoted the value. Bought a 2nd hand FA 100mm Macro from Japan, one of my best experiences buying off ebay. Paid saturday morning, arrived tuesday morning through a...
Posted by Unlocker on 04/07/2008 - 11:59
Kit lens replacement
Before spending any money you might like to post some examples of the softness that you're seeing. People with more experience of that camera / lens combination will soon be able to tell if the failing is of equipment or technique; if it's the latter then you'll have saved a few quid and hopefully ...
Posted by beachboy2 on 06/07/2008 - 09:17
Kit lens replacement
Meanwhile back on topic..... :wink: I agree with beachboy. Cocnetrate on learning to use the camera, learn how to get a good composition and about depth of field etc, then worry about what new lens to buy. It is too easy to rush out and buy a load of new lenses and then blame them for problems. ...
Posted by Gwyn on 06/07/2008 - 11:43
Kit lens replacement
Excellent and succinct advice from Hefty1, I would like to add the following: the Pentax version of the lens is marked with a brown line on the barrel's focusing ring between the minimum focus distance of 0.25m and 0.35m. The manual states that lens performance will be seriously impaired if used wid...
Posted by gartmore on 06/07/2008 - 18:22
Kit lens replacement
Many thanks for all the responses.There is a lot to think about and digest there and I will do my best to do so.Particularly interesting was the information on closing down the aperture at certain focal lengths,I was misguided in thinking that brighter is better.Strangely I was in Waterstones last w...
Posted by missmarple on 07/07/2008 - 07:16
Kit lens replacement
Thanks Hefty. you probably discovered the manual rather assumes that you understand the basics of photography That is certainly true, but it is not my only gripe with the manual. From my own experience one of the advantages of the aforementioned book is that it prompted me to delve back into the m...
Posted by Shaky on 07/07/2008 - 16:38
Kit lens replacement
Hey I was looking through my library and found the weirdest thing! "Understanding Exposure, revised edition" by Bryan Peterson What a coincidence! (Gerri buys the weirdest things!) I never woulda thought of that. If I was gonna write a book... I'd charge $50.00. I'd call...
Posted by Don on 09/07/2008 - 04:10
K Mount lens
The lens will be useable, with some restrictions. As there is no A setting and there are no electrical contacts on the lens you will need to activate the use of aperture ring option in the Custom menu. Then the lens can be used in manual exposure mode with stop down metering and operation. In oth...
Posted by johnriley on 07/07/2008 - 11:55
