Search results for 'back focus' - page 1043
Centon 500mm Mirror Lens
Hi, I too have an old Centon 500mm Mirror and was wondering if I have to use the rear UV filter or not. Somewhere at the back of my mind tells me one had to be fitted at all times but looking on the Interweb I can find no refference to this and nothing is menotioned about in the user manual. Any ...
Posted by kevinwolves on 28/06/2012 - 13:26
Centon 500mm Mirror Lens
Hi, I too have an old Centon 500mm Mirror and was wondering if I have to use the rear UV filter or not. Somewhere at the back of my mind tells me one had to be fitted at all times but looking on the Interweb I can find no refference to this and nothing is menotioned about in the user manual. Any ...
Posted by kh1234567890 on 28/06/2012 - 14:06
Centon 500mm Mirror Lens
The original manual states a rear filter must always be in place. Yes, to stop cr*p falling in. If you examine the supplied filters you'll find that they are just flat bits of glass with no immediately observable magical properties. If anyone does find a real explanation as to why a flat piece...
Posted by kh1234567890 on 28/06/2012 - 22:36
Mint and super rare Pentax lens collection - some advise please
The A 100/2.8 should be worth £200... due to rarity value. The 'M' 35mm f/2.8 should go for about £60. Make sure that when it's stopped down to f/22 the iris opens and closes quickly as you flick the projecting lever on the back of the lens, whilst it's not on a camera. It's a common fault wi...
Posted by Algernon on 29/04/2012 - 18:23
Mint and super rare Pentax lens collection - some advise please
I assume the big gold star on the 200 macro isn't original? :? It appears very much as though it is original, it certainly doesn't look like it's been stuck on as an afterthought. Maybe a Pentax branding exersise for * lenses? Unless anyone can remember back to when they were new in the stores it wo...
Posted by thetimesaver on 30/04/2012 - 14:16
Mint and super rare Pentax lens collection - some advise please
At the end of the day (and I never thought I would ever say this, especially about a macro) ... it's only a lens. Now if you would excuse me I must get back to transferring money to my Paypal account ready to fund my bid.
Posted by Mike-P on 30/04/2012 - 20:37
Mint and super rare Pentax lens collection - some advise please
At the end of the day (and I never thought I would ever say this, especially about a macro) ... it's only a lens. Now if you would excuse me I must get back to transferring money to my Paypal account ready to fund my bid. My mistake was linking the Paypal directly to the bank a/c! Fortunately...
Posted by Col K10 on 30/04/2012 - 21:09
Mint and super rare Pentax lens collection - some advise please
At the end of the day (and I never thought I would ever say this, especially about a macro) ... it's only a lens. Now if you would excuse me I must get back to transferring money to my Paypal account ready to fund my bid. My mistake was linking the Paypal directly to the bank a/c! Fortunately...
Posted by dougf8 on 30/04/2012 - 21:17
Mint and super rare Pentax lens collection - some advise please
At the end of the day (and I never thought I would ever say this, especially about a macro) ... it's only a lens. Now if you would excuse me I must get back to transferring money to my Paypal account ready to fund my bid. My mistake was linking the Paypal directly to the bank a/c! Fortunately...
Posted by Unlocker on 30/04/2012 - 21:39
Mint and super rare Pentax lens collection - some advise please
The shift lens usually sells at about £300--£350.....................Kris. The listing makes no mention if the shift lens is being sold with the original manual, which is apparently rather essential for a shift lens, unles you enjoy endless hours of experimentation getting nowhere :D There isn't muc...
Posted by womble on 04/05/2012 - 17:36
Mint and super rare Pentax lens collection - some advise please
Well the 15mm F3.5 is a rare and well sort-after lens. Built in filters and pretty sharp. In fact a couple of years back, the classic camera place in Manchester had one in, but the previous owner had converted it to fit a Leica! Shocking! but if you think about it, an honour. As it is considered ...
Posted by Offertonhatter on 11/05/2012 - 19:31
Mint and super rare Pentax lens collection - some advise please
Ah, I see, you mean he's asking only for payment by cheque. Well I guess one way round that is for eBay to insist the everything is PayPal only, but many people would object to going down that route. Back to Caveat Emptor I think.
Posted by johnriley on 12/05/2012 - 19:48
SMC FA 100/2.8 Macro focusing problem
Hi there, i have a problem with my focusing ring on my recently acquired FA 100. Firstly, it refused to focus to infinity, now the focusing ring is loose and doesn't even rotate, just a noise. I think the focusing gear mechanism is out of alignment. Is there any service manual on the internet or ...
Posted by amplified on 30/04/2012 - 01:08
SMC FA 100/2.8 Macro focusing problem
+1 from me. You risk destroying a £300 - £400 lens, that may not be easily replaced, by attempting what might be a simple and inexpensive repair for a professional repairer. BTW, the fact that it wouldn't focus to infinity is no real problem for a macro lens, which is almost never used at infinit...
Posted by Mannesty on 30/04/2012 - 16:26
SMC FA 100/2.8 Macro focusing problem
One of the screws was lost and the others was loose. Little tightening and it is all right now. Got some aperture misalignment... +1.0EV error when stopping down after F2.8. After some 'scientific tests' i managed to get it to no error at all - works excellent at all apertures. Then again... anot...
Posted by amplified on 23/05/2012 - 01:33
35mm vs 50mm
I bought a CZJ Flektagon 35mm f 2.4. M42 mount.Manual focus of course. Very sharp even wide open and very close focussing handy as well.It had a good work out recently on wild orchids and farm scenes. Highly recommended. bb2
Posted by beachboy2 on 03/05/2012 - 10:17
Sigma 50-200mm OS HSM?
Hi Jacqui, which camera do you currently have? If it's a K100D/K110D or earlier, hsm/sdm will not work and you will have a manual focus lens. K100D super, K10D (with firmware update 1.30 if I'm not mistaken), K200d and newer are OK.
Posted by sterretje on 07/05/2012 - 19:00
Sigma 50-200mm OS HSM?
Well, I received my lens today and tried it out a bit in the garden. So far quite impressed, fully zoomed I expected really soft but, actually, not bad at all, it seems quite sharp to me, compared quite well to the tamron 70-300mm (although the one I bought did seem to have a problem and was particu...
Posted by jacqui2 on 09/05/2012 - 00:10
Are they 'identical'?
Yes, there may be internal coating differences but was taken with mine as was . Don't go back for the 35mm macro, it's now here infront of me..:oops:
Posted by Hardgravity on 06/05/2012 - 21:10
Are they 'identical'?
Don't go back for the 35mm macro, it's now here infront of me..:oops: If it wasn't for the fact that I'd bought an FA35 2 weeks since I would've nabbed it! 2 AF lenses in 2 weeks means I'm now very poor and have to walk more as I can't afford petrol! I am a tad jealous though... :mrgreen:
Posted by DaveHolmes on 06/05/2012 - 21:45
