Search results for 'back focus' - page 1080
Portrait lens
If you are prepared to use a manual focus M42 lens then the Helios 58mm f/2 is a good low cost option ! An advantage is that it will FORCE experimentation with all the exposure and focus settings !!! Peter
Posted by PeterKR on 20/03/2013 - 21:02
Portrait lens
If you are prepared to use a manual focus M42 lens then the Helios 58mm f/2 is a good low cost option ! An advantage is that it will FORCE experimentation with all the exposure and focus settings !!! Peter And to back that up I just found the following on the US Forum :- "..the M42 Helios ...
Posted by PeterKR on 20/03/2013 - 21:34
Portrait lens
Thanks for all the help and feed back guys always a very helpful forum this one. Ian
Posted by philstaff on 21/03/2013 - 14:13
Portrait lens
It's a Soligor - you can *just* read the name. I don't think it's anything special, judging from comments about it on the manual focus forums. Andrew
Posted by andrewk on 22/03/2013 - 12:53
Portrait lens
It's a Soligor - you can *just* read the name. I don't think it's anything special, judging from comments about it on the manual focus forums. Andrew Thanks Andrew your more observant tban I am I missed that completly. Ian
Posted by philstaff on 22/03/2013 - 14:00
Some more uses for a lens Hood
The main purpose for a lens hood is of course to cut down the glare caused by angled light waves hitting the lens However there are other handy uses especially with lenses where the front element rotates during focussing. The auto focus lenses all seem to have a very narrow focussing ring on fro...
Posted by Horst on 19/03/2013 - 12:25
Tele-converters???
Think of the teleconverter as being a magnifying glass, in which case x2 makes perfect sense. 400mm becomes 800mm. However, there is a two stop light loss, so f/5.6 would become f/11, so camera shake may be a problem. Then we are magnifying the faults in a lens, so quality will suffer to some degree...
Posted by johnriley on 19/03/2013 - 17:02
Tele-converters???
Thanks for the tips. I find that my 400mm is sharper around f11 but would that be bumped up as well, would I be looking at f22 to get same level of sharpness? I've only seen a Sigma 1.4x converter, are there other ones that a more reasonably priced? With a 1.4x I would think around f16 and a 2x ...
Posted by Mike-P on 19/03/2013 - 17:23
Tele-converters???
My lens is so old it's manual focus already, no AF on it. I'll take your combined advice and have a look out for a 1.4 x converter or maybe stay away altogether and dream of a 150-500mm lens
Posted by Ralphpiano on 19/03/2013 - 17:28
Pentax SMC DA* 200mm F/2.8 ED (IF) SDM Feedback & Advice
Gorgeous lens, tack sharp at f2.8. That's it, in a nutshell. They cost a lot more than £500 when I got mine, but it was well worth its price to me, for its optical quality, and its build quality, and its intrinsic 'character'. "A thing of beauty is a joy for ever" as the poet put it:) Oh and its...
Posted by duncanM on 19/03/2013 - 23:46
M42 to K mount adaptors
Hi Andrew I have several cheap 3rd party adaptors from China and there are 2 points to note as there are 2 different types:- 1. To get the full focus range to infinity you need the type that fits inside the camera mount completely. The problem with these is that you may never get them out agai...
Posted by PeterKR on 20/03/2013 - 20:51
M42 to K mount adaptors
Drew, come and see me or remind me to show you the adaptors on my lenses next time we're out on a shoot. You absolutely do not have to pay out for genuine Pentax ones and I am happy to show you why! Mine cost around £7 each, there is no risk of them getting stuck on my cameras and no risk of the l...
Posted by davidstorm on 20/03/2013 - 22:11
M42 to K mount adaptors
David, Can you please tell me which adapter you use? Thanks All mine are from this ebay supplier: No problems with any of them, I've bought six or seven so far. The trick with these is knowing how to fit them. Leave them permanently on the lens, screwed down very tightly. Remove the sp...
Posted by davidstorm on 20/03/2013 - 22:25
M42 to K mount adaptors
David, Can you please tell me which adapter you use? Thanks All mine are from this ebay supplier: Cheers David:D Thanks David
Posted by giofi on 21/03/2013 - 05:50
M42 to K mount adaptors
Good timing on this thread. I've just bought an M42 fit slide converter thingy! My mother in law died recently and there are lots of slides. My slide scanner is playing silly beggars, everything is slightly out of focus, so I took a pop at a slide copier lens on ebay and got it. Next is the M42 ad...
Posted by Father Ted on 21/03/2013 - 12:09
Any experience with the Pentax-F SMC 85mm F/2.8 Soft Auto Focus lens
I was always interested in lenses with slightly soft focus effect. I managed to get this during my Leica days with the Summar 50mm f2 lens when used between f2 and f2.8 and also the Canon 50mm f1.2 with the Canon/Leica thread. Now I am very interested in the Pentax-F SMC 85mm F/2.8 Soft Auto ...
Posted by Horst on 22/03/2013 - 11:26
Any experience with the Pentax-F SMC 85mm F/2.8 Soft Auto Focus lens
Well, it seems nobody in this forum has used this lens. (Hard to believe) Regards, Horst
Posted by Horst on 25/03/2013 - 06:31
Any experience with the Pentax-F SMC 85mm F/2.8 Soft Auto Focus lens
I've used the 85mm f/2.2, but I was uninspired by its possibilities. The lenses are quite rare and very expensive as a result. In the version I had there was an adjustable baffle that increased the soft focus effect. I'd rather have a standard 85mm and use a soft focus filter or digital effect th...
Posted by johnriley on 25/03/2013 - 08:51
Any experience with the Pentax-F SMC 85mm F/2.8 Soft Auto Focus lens
I'm sure this must be a silly question really - but can someone tell me what the difference is (in outcome) between a lens that has a soft-focus effect and one that just isn't so sharp?? Andrew
Posted by andrewk on 25/03/2013 - 10:15
Any experience with the Pentax-F SMC 85mm F/2.8 Soft Auto Focus lens
It's the rendering Andrew. Soft focus lenses leave some aberrations uncorrected, so it creates a particular effect. Soft lenses are just unsharp and soft, however, they are so because of lens defects, so it's possible to get a really poor lens that actually gives you the results you want. See David ...
Posted by johnriley on 25/03/2013 - 11:12
