Search results for 'back focus' - page 1041
Pentax fit lenses on Nikon body?
To go back to the original post. Yes, there are adapters for Pentax to Nikon but with significant loss of functionality and possibly image quality. Your options are: a) have the K10D repaired. b) buy a K5, or a K-01. c) Sell-up and jump ship. Unless you are the type that enjoys mixing and ...
Posted by womble on 19/04/2012 - 14:54
Pentax fit lenses on Nikon body?
To go back to the original post. Yes, there are adapters for Pentax to Nikon but with significant loss of functionality and possibly image quality. Your options are: a) have the K10D repaired. b) buy a K5, or a K-01. c) Sell-up and jump ship. Unless you are the type that enjoys mixing and ...
Posted by Northgrain on 19/04/2012 - 22:00
Sigma 30mm f1.4 or Sigma 28mm f1.8 macro - thoughts and experiences please
The 28mm f1.8 is one of the few non-pentax lenses that I have kept hold of due to its excellent image quality. The Macro feature is probably better described as close-focus, it can be slightly soft at maximum aperture (but only slightly, and how many lenses aren't?) - so if IQ is prime importance th...
Posted by LennyBloke on 20/04/2012 - 13:05
Is this fungus?
I've recently aquired an M42 500mm/f8 mirror lens which when viewed from the front shows a spotless mirror. However the back lens appears to have an appearance of "partial mirroring", see below. The effect manifests itself about 5-6mm below the surface of the lens, so either at the interface of two...
Posted by Frogherder on 20/04/2012 - 18:19
Is this fungus?
Thanks Iain for the reply, further information just obtained. If I look through the front I can justmake ouot the "stain" at the far end of a tunnel. If I rotate the focus whilst looking through the front the "stain" doesn't rotate but a dust spec on the mirror does. If I look through the ba...
Posted by Frogherder on 20/04/2012 - 19:48
Is this fungus?
OK, thanks to every one who took the time out to respond. I'm sold on the idea of it being between two lenses and as I've discovered there is no appreciable light loss. Coupled with the fact that despite spending time making a 55mm pin spanner to remove what I think is a locking ring holding t...
Posted by Frogherder on 24/04/2012 - 22:58
SMC-F 28mm F2.8
I'm never quite sure why manual focus necessarily means "should be cheaper"? Surely, the key thing is the optical qualities of the lens? AF is only fluff on top of the important aspects. Having said that, there do seem to be some lenses where "legendary" status (and to a certain extent rarity) ha...
Posted by womble on 27/04/2012 - 00:24
SMC-F 28mm F2.8
I own 3 prime lenses in 24 - 28 mm range; - Sigma 24/1.8, a fantastic lens. Razor sharp wide open. Bulky. My main portrait lens lately. A few samples, both at f2.2: http://www.gorjup.eu/blog/blaz-igralec-rugbyja-pri-rugby-klubu-ljubljana/ http://www.gorjup.eu/blog/peter-kavcic-kapetan-rugby-k...
Posted by flat4 on 27/04/2012 - 08:37
Holy Moly
It's the SMC Takumar 55mm 1.8 M42, circa 1972. Not much point selling it as it's only worth £20. Built like a tank, very smooth to focus. Forty years old and it looks brand new. Seems to be on the cool side colours wise, but that's my preference anyway. Just got to work out how to best util...
Posted by DrOrloff on 21/04/2012 - 16:45
Pentax Lenses
Pentax optical actually merged with Seiko not Hoya back in 2003/4 http://www.seiko-optical.com/Company_History.24.0.html?&L=21
Posted by Algernon on 22/04/2012 - 08:40
Pentax Lenses
Pentax optical actually merged with Seiko not Hoya back in 2003/4 http://www.seiko-optical.com/Company_History.24.0.html?&L=21 Case Closed!
Posted by stephanbennett on 05/08/2012 - 19:38
Lens for documenting / portraits at a wedding
I have the 35mm 2.4 - it's a lightweight lens, with the composite mount and no quick shift or aperture ring, but I've found it takes great pictures, and have some lovely portraits taken with it outside. For the price I don't think you'll find better - there were a few for sale on here a while bac...
Posted by AndrewH on 23/04/2012 - 09:10
Lens for documenting / portraits at a wedding
The 35mm f2.4. Great focal length for this sort of thing. Stick it in Av mode (at f2.4 - it is perfectly sharp enough wide open and will help blur distracting backgrounds a bit) and just let your brother get on with it. Let him also try the 50mm f1.7 in Av mode and see if he can pull of some 'bokeh'...
Posted by Pentaxophile on 23/04/2012 - 10:02
Lens for documenting / portraits at a wedding
I have the 50mm 1.4 & the 35mm 2.4, I use the 35mm more, just for the FOV. The 50mm is to long on a crop sensor, great for head & shoulder portraits. Also by going 35mm you can zoom in, if they use the 50mm you can't put stuff back into the shot ;-)
Posted by cabstar on 23/04/2012 - 13:52
Lens for documenting / portraits at a wedding
I have both a 50 F1.4 and the 35 F2.4 and I would go for the 35. In part because an F1.4 in novice hands is more likely to m1ss the spot and be slightly out on focus, however the 50 is great for indoors shooting. One piece of advice is to keep the camera on P and set to shoot Raw+, that way colo...
Posted by beakynet on 23/04/2012 - 22:23
Lens for documenting / portraits at a wedding
Thanks for the recomendations so far. Had to laugh at the idea of letting my novice brother loose with a manual only on the big day. That said he pulled a sharp focus the first and only time he tried! That said he had spun the aperture round to about 16... So beaky net, I too would be a bit anxio...
Posted by Evel79 on 23/04/2012 - 23:49
Lens for documenting / portraits at a wedding
From what I have read, the 50mm doesn't really start to shine until about f2.8 anyway. Does the f1.4-2.8 have any real value in terms of image quality (or is it low-light emergency only situations?). I normally use my 50mm between f2.8-5.6 when I want to be safe. Yet again we one of the most signifi...
Posted by Smeggypants on 24/04/2012 - 02:53
Lens for documenting / portraits at a wedding
For apertures wider that about f2.0 then this will only reduce focussing errors Agreed. Without a split focussing screen and using live view when possible focussing errors are not uncommon with my 50 1.7 when opened up and in a hurry (or not!) Plus the length of time and concentration this lens need...
Posted by Evel79 on 24/04/2012 - 06:48
Lens for documenting / portraits at a wedding
[personally I don't value that 70s soft porn layer of mist over the subjects The 70s soft porn mist ( soft focus ) effect ( and I remember it well - hehe ) is completely different to shooting with a narrow DOF. Teh sigma 30/1.4 for example is optimised to be sharp in the centre at the expense of edg...
Posted by Smeggypants on 24/04/2012 - 07:52
Lens for documenting / portraits at a wedding
Following on from Smeggpants's comments, it just goes to show that it's important to understand the design ethos of a lens. Unfortunately manufacturers rarely come clean about it, so we have to find out all by ourselves. Clearly the Sigma 30mm f1.4 favours central sharpness and makes an ideal len...
Posted by johnriley on 24/04/2012 - 08:27
