Search results for 'back focus' - page 792
close-uplens filter or macro extension tube
sory if im being anoying, i dont have any idea about macro lenses, what about Tamron 70-300mm macro. how good will this be comparing with the other macro lenses? As far as my understanding goes that isn't a true Macro lens. A true macro lens have a magnification of 1:1 or greater, I believe that ...
Posted by Anvh on 03/07/2009 - 23:25
close-uplens filter or macro extension tube
A bit of a "tweak" to that info, in that Macro lenses are either 1:2 (SMC Pentax-M 100mm f4 is an example) or. more properly, 1:1 (Smc Pentax-FA 100mm f2.8 is an example). Zooms often go to 1:4 which is not bad, and some approach 1:3, but these are not true macro lenses. They do not have close en...
Posted by johnriley on 03/07/2009 - 23:47
Macro Reversing Adapter
the Pentax A 50mm + a reversing ring will give you ~1:2 (I think, someone please correct me if I am miss-remembering) The focus will be fixed so you have to move the camera/subject to bring the subject into focus. Also you will have to stop down the aperture manually. Optically the results fro...
Posted by Mongoose on 03/07/2009 - 14:15
Usage of fast lens! Query
It might be a good idea to post a picture as an example of what you are shooting. The 50mm f1.4 is ideal for low light, but it does depend on the subject. If the light is really poor manual focus might be better - focusing will certainly be critical as I assume you are using it with a wide apert...
Posted by johnriley on 05/07/2009 - 23:32
Usage of fast lens! Query
If your flash can be set so that the focus assist light is used, but no flash, that should help focussing in very low light. The setting on Pentax flashes is SB (Spot Beam).
Posted by Mannesty on 05/07/2009 - 23:45
Usage of fast lens! Query
I got a SMC-F 50mm F1.7 and it hunted for focus as well, Dunno if it being the first implementation of AF plays a role, but I was disapointed as well.
Posted by edumad on 06/07/2009 - 10:52
Usage of fast lens! Query
I got a SMC-F 50mm F1.7 and it hunted for focus as well, Dunno if it being the first implementation of AF plays a role, but I was disapointed as well. Daylight or sunlight is no problem and the shots are great, But i was useing it last night in the house at about 10pm(shooting my dvd collection) and...
Posted by organicimagery on 06/07/2009 - 11:20
Usage of fast lens! Query
If your flash can be set so that the focus assist light is used, but no flash, that should help focussing in very low light. The setting on Pentax flashes is SB (Spot Beam). i only have the internal flash at the min
Posted by organicimagery on 06/07/2009 - 11:20
Usage of fast lens! Query
It's probably a good idea to get a better definition of what you mean by "low light" ;) Give us an exposure reading and that will help (e.g. ISO3200, f/2, 1/30) In all situations you need a good point of reference for focussing - something with some contrast. Personally, I find that I always u...
Posted by MattMatic on 06/07/2009 - 12:04
Usage of fast lens! Query
It's probably a good idea to get a better definition of what you mean by "low light" ;) Give us an exposure reading and that will help (e.g. ISO3200, f/2, 1/30) In all situations you need a good point of reference for focussing - something with some contrast. Personally, I find that I always u...
Posted by organicimagery on 06/07/2009 - 12:28
Lens wish list - A different approach
I have been particularly interested in the recent discussions on what lenses you should have after the kit lens and suggestions on standard sets of lenses. I was wondering if aspiring experts needed a broad range of knowledge not only in different focal length and speed lenses but different types...
Posted by GlynM on 06/07/2009 - 17:51
Lens wish list - A different approach
:lol: What a serious case of LBA! :o :shock: :shock: Well, these are the problems with LBA, not in any order. 1. Never having the correct lens mounted. 2. Indecision as to what lenses to take with you. 3. Multiple camera bags (leads to BBA). 5. Multiple bodies, not to mention tripods, heads,...
Posted by RichardDay on 07/07/2009 - 13:04
Lens wish list - A different approach
Good for you, but don't forget that you're not cured and could revert back at any time! :)
Posted by johnriley on 07/07/2009 - 13:49
Lens wish list - A different approach
... Well, these are the problems with LBA, not in any order. 1. Never having the correct lens mounted. 2. Indecision as to what lenses to take with you. 3. Multiple camera bags (leads to BBA). 5. Multiple bodies, not to mention tripods, heads, flashes, lighting gear etc., etc. 6. Damaged shoul...
Posted by GlynM on 07/07/2009 - 13:58
Lens wish list - A different approach
... Well, these are the problems with LBA, not in any order. 1. Never having the correct lens mounted. 2. Indecision as to what lenses to take with you. 3. Multiple camera bags (leads to BBA). 5. Multiple bodies, not to mention tripods, heads, flashes, lighting gear etc., etc. 6. Damaged shoul...
Posted by RichardDay on 07/07/2009 - 18:30
Lens wish list - A different approach
Good for you, but don't forget that you're not cured and could revert back at any time! :) Nah, easy. I will just resist, I will resist, I will ...., I ...., I .... :wink: :roll: Honestly though, I'm much more content these days to concentrate on my abilities (:!: :!: :lol:), in both taking and p...
Posted by RichardDay on 07/07/2009 - 18:37
Pentax smc DA 40mm f/2.8 Limited
I have one of these. It was on my must-have list as a pancake lens and at £216 certainly sounds very attractive. However I hardly ever use mine. I prefer to use the FA50 or DA35 limited. The lens cap on the DA40 is a small screw-on disc, the hood is also screw on and these are a pain to remove qu...
Posted by GlynM on 06/07/2009 - 20:51
Pentax smc DA 40mm f/2.8 Limited
Stefan - I think the DA35 limited is a far superior lens. It has a beautiful sliding, integral, hood and a lovely push-on metal lens cap. It also has the space for a set of DOF markings that I expect to find on a quality lens. I've not got one but I believe the 43mm limited to be even better:) ...
Posted by GlynM on 06/07/2009 - 21:32
Pentax smc DA 40mm f/2.8 Limited
Have you compared the IQ side by side Glyn, I never really could except those taken by others. I believe that the bokeh of the DA40 was better then the DA35 with in the normal focus range and that's one of the reasons I went of the DA40. Also the sharpness across the frame was very constant with the...
Posted by Anvh on 06/07/2009 - 21:41
Pentax smc DA 40mm f/2.8 Limited
DA40: Small and compact, very fast focus, very sharp right across (being a pancake). - no close focusing, DA35: + Great macro facility, wider FOV, better lens cap etc., - not as sharp in the corners as the DA40, much slower focus (due to macro, has more length to travel) For me I ...
Posted by NorrisTudor on 08/07/2009 - 20:46
