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Photo Forum / Digital Photography / DSLR Cameras / January 2007Step Down Rings
I have a Hoya 72mm CP for my 18-200VR and have now have a 70-300VR which is 67mm. Do filters mounted on step down rings cause any loss of clarity?  SignatureJoan http://www.flickr.com/photos/joan-in-manly >I have a Hoya 72mm CP for my 18-200VR and have now have a 70-300VR > which is 67mm. > > Do filters mounted on step down rings cause any loss of clarity? If the filter is larger than the lens there should be no problem. Obviously, if the filter is smaller you will get vignetting. If the quality of the filter is crappy you'll have loss of clarity regardless. >>I have a Hoya 72mm CP for my 18-200VR and have now have a 70-300VR >> which is 67mm. [quoted text clipped - 4 lines] > Obviously, if the filter is smaller you will get vignetting. If the > quality of the filter is crappy you'll have loss of clarity regardless. If it's a step down ring, then chances are the filter diameter is smaller than the lens element diameter... SignatureSkip Middleton www.shadowcatcherimagery.com www.pbase.com/skipm > >>I have a Hoya 72mm CP for my 18-200VR and have now have a 70-300VR > >> which is 67mm. [quoted text clipped - 7 lines] > If it's a step down ring, then chances are the filter diameter is smaller > than the lens element diameter... Technically, yes, but I believe he's thinking of it the other way 'round - he mentions going from an (original) 72mm CP to use on a (current) 67mm lens. To the OP: 1) no, it shouldn't be a problem. 2) "step-up" and "step-down" is normally determined from the end closest to the camera :^) - thus, when putting a larger filter on a smaller lens, it needs a "step-up" adapter/ring. Technical nit-pick, but as you see, it does sometimes make a difference to use the correct terminology to get the correct answer. SignatureYou need only reflect that one of the best ways to get yourself a reputation as a dangerous citizen these days is to go about repeating the very phrases which our founding fathers used in the struggle for independence. -- Charles A. Beard >> >>I have a Hoya 72mm CP for my 18-200VR and have now have a 70-300VR >> >> which is 67mm. [quoted text clipped - 11 lines] > 'round - he mentions going from an (original) 72mm CP to use on a > (current) 67mm lens. I guess it would help if I'd read the ENTIRE post, now wouldn't it? I mean, after all, it wasn't that long... SignatureSkip Middleton www.shadowcatcherimagery.com www.pbase.com/skipm > >> >>I have a Hoya 72mm CP for my 18-200VR and have now have a 70-300VR > >> >> which is 67mm. [quoted text clipped - 14 lines] > I guess it would help if I'd read the ENTIRE post, now wouldn't it? I mean, > after all, it wasn't that long... :^) Happens to all of us. SignatureYou need only reflect that one of the best ways to get yourself a reputation as a dangerous citizen these days is to go about repeating the very phrases which our founding fathers used in the struggle for independence. -- Charles A. Beard Oops, thanks for the correction Ken. I take it then, that a 67-72 step up ring would be worth the purchase and save me a couple of hundred little Aussie dollars. SignatureJoan http://www.flickr.com/photos/joan-in-manly : Technically, yes, but I believe he's thinking of it the other way : 'round - he mentions going from an (original) 72mm CP to use on a [quoted text clipped - 6 lines] : sometimes make a difference to use the correct terminology to get the : correct answer. >Oops, thanks for the correction Ken. > >I take it then, that a 67-72 step up ring would be worth the purchase >and save me a couple of hundred little Aussie dollars. Using 72mm filters will work just fine, but remember that your lens hood won't fit. You might consider buying a 72mm screw-in lens hood specifically for use with the polariser. The 72mm Hoya CP I have doesn't have a thread to take anything outside it. Bit of a nuisance really as I like putting the lens cap on while walking around. SignatureJoan http://www.flickr.com/photos/joan-in-manly : >Oops, thanks for the correction Ken. : > [quoted text clipped - 4 lines] : hood won't fit. You might consider buying a 72mm screw-in lens hood : specifically for use with the polariser. >The 72mm Hoya CP I have doesn't have a thread to take anything outside >it. Bit of a nuisance really as I like putting the lens cap on while >walking around. Yes, that is a nuisance. A slim polariser is probably essential for the 18mm end of your other lens to minimise vignetting, so there probably isn't a workaround. In that case, I would recommend that you invest in a 67mm CP which will work with your lens hood. You should always use a lens hood. If you look on eBay there are some very good deals on Hoya CPs from Hong Kong. > >Oops, thanks for the correction Ken. > > [quoted text clipped - 4 lines] > hood won't fit. You might consider buying a 72mm screw-in lens hood > specifically for use with the polariser. Good point. SignatureYou need only reflect that one of the best ways to get yourself a reputation as a dangerous citizen these days is to go about repeating the very phrases which our founding fathers used in the struggle for independence. -- Charles A. Beard > Oops, thanks for the correction Ken. > > I take it then, that a 67-72 step up ring would be worth the purchase > and save me a couple of hundred little Aussie dollars. I've got a ton of them, kicking around, and they can, indeed, save you money. SignatureSkip Middleton www.shadowcatcherimagery.com www.pbase.com/skipm >> Oops, thanks for the correction Ken. >> [quoted text clipped - 6 lines] > I've got a ton of them, kicking around, and they can, indeed, save you > money. What, little aussie dollars? Lots of aussie dollars when you don't have to buy another Hoya SMC CP. SignatureJoan http://www.flickr.com/photos/joan-in-manly : What, little aussie dollars? >>> Oops, thanks for the correction Ken. >>> [quoted text clipped - 8 lines] > > What, little aussie dollars? Actually, I used to have some little Aussie dollars kicking around, but I threw them back in hopes they'd grow a little... ;-) SignatureSkip Middleton www.shadowcatcherimagery.com www.pbase.com/skipm In article <45b1cd93$0$19993$5a62ac22@per-qv1-newsreader-01.iinet.net.au>, Joan > Oops, thanks for the correction Ken. > > I take it then, that a 67-72 step up ring would be worth the purchase > and save me a couple of hundred little Aussie dollars. Probably - I doubt that the step-up ring is even as thick as a normal filter, so that the thickness of it won't be any more likely to induce vignetting than if you were using a normal filter. If it is thicker, than it might be a slight problem at the extreme wide end of the range. SignatureYou need only reflect that one of the best ways to get yourself a reputation as a dangerous citizen these days is to go about repeating the very phrases which our founding fathers used in the struggle for independence. -- Charles A. Beard >I have a Hoya 72mm CP for my 18-200VR and have now have a 70-300VR > which is 67mm. > > Do filters mounted on step down rings cause any loss of clarity? What do you think of the new lens? So far so good, Rudy, although I need to revisit how to attach the Manfrotto quick release plate, as when I turned the camera (D50) to portrait it started to droop. SignatureJoan http://www.flickr.com/photos/joan-in-manly : What do you think of the new lens? <snip> I need to revisit how to attach the > Manfrotto quick release plate, as when I turned the camera (D50) to > portrait it started to droop. Which head are you using? 141RC on a 190Pro. SignatureJoan http://www.flickr.com/photos/joan-in-manly : <snip> : I need to revisit how to attach the : > Manfrotto quick release plate, as when I turned the camera (D50) to : > portrait it started to droop. : : Which head are you using? > 141RC on a 190Pro. I'm not familiar with that model. I use the 322 RC2, and it's easily adjustable for moving the center of gravity: http://www.flickr.com/photo_zoom.gne?id=26104004&size=o >So far so good, Rudy, although I need to revisit how to attach the >Manfrotto quick release plate, as when I turned the camera (D50) to >portrait it started to droop. Try applying a *very thin* coating of rubber solution (of the type found in bicycle puncture repair kits) to the composite pad of the Manfrotto QR plate. Allow the rubber solution to dry completely before using the plate with the camera, otherwise it might adhere rather too well. <g> Thanks for that advice, I'll get some and try it. SignatureJoan http://www.flickr.com/photos/joan-in-manly : >So far so good, Rudy, although I need to revisit how to attach the : >Manfrotto quick release plate, as when I turned the camera (D50) to [quoted text clipped - 6 lines] : Allow the rubber solution to dry completely before using the plate : with the camera, otherwise it might adhere rather too well. <g> > Thanks for that advice, I'll get some and try it. How about taking everyone's advice and figuring out how to not top-post? Greg Signature"All my time I spent in heaven Revelries of dance and wine Waking to the sound of laughter Up I'd rise and kiss the sky" - The Mekons How about not trying to be a netcop? SignatureJoan http://www.flickr.com/photos/joan-in-manly : How about taking everyone's advice and figuring out how to not top-post? : : Greg > How about not trying to be a netcop? Netcop? Yet another demonstration of your cluelessness. Greg Signature"All my time I spent in heaven Revelries of dance and wine Waking to the sound of laughter Up I'd rise and kiss the sky" - The Mekons At least I learnt good social behaviour from my parents. One of the many things they taught me was not to give advice unless it was requested. SignatureJoan http://www.flickr.com/photos/joan-in-manly : Netcop? Yet another demonstration of your cluelessness. : : Greg > At least I learnt good social behaviour from my parents. One of the > many things they taught me was not to give advice unless it was > requested. It's not advice. You sure didn't learn basic etiquette from them. Greg Signature"All my time I spent in heaven Revelries of dance and wine Waking to the sound of laughter Up I'd rise and kiss the sky" - The Mekons Twit! SignatureJoan http://www.flickr.com/photos/joan-in-manly : > At least I learnt good social behaviour from my parents. One of the : > many things they taught me was not to give advice unless it was [quoted text clipped - 3 lines] : : Greg > Twit! Whatever. Greg Signature"All my time I spent in heaven Revelries of dance and wine Waking to the sound of laughter Up I'd rise and kiss the sky" - The Mekons Does GT sit down to pee? >> Thanks for that advice, I'll get some and try it. > >How about taking everyone's advice and figuring out how to not top-post? > >Greg >Does GT sit down to pee? No, he/she just does it in his/her nappy. ;-) Wait a few hours, and we'll have the usual turgid lecture from "The Expert" Alan Browne on why people shouldn't top post, followed by a thread with at least a thousand postings from Alan Browne on why Microsoft Windows Vista is the best operating system ever. <Yawn> >>Does GT sit down to pee? > [quoted text clipped - 4 lines] > thread with at least a thousand postings from Alan Browne on why > Microsoft Windows Vista is the best operating system ever. As usual, with nothing substantive to say, you attack me out of the blue. I've never said a word about Vista, so I would enjoy hearing your motivations in linking me to it (from what I've seen & heard there is no need for me to consider it, I can't speak for others). We would Tony, enjoy seeing your Paris Match cover photo. Does it really exist or were you trying to garner respect that you haven't earned? Rather than your petty attacks on me, which gain you nothing as they are without substance, post some of your photography. Or is that also without substance? ;-) Signature-- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm -- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm -- [SI] gallery & rulz: http://www.pbase.com/shootin -- e-meil: Remove FreeLunch. >> Does GT sit down to pee? > > No, he/she just does it in his/her nappy. ;-) Funny. At least you didn't top-post that. Greg Signature"All my time I spent in heaven Revelries of dance and wine Waking to the sound of laughter Up I'd rise and kiss the sky" - The Mekons I put a piece of that synthetic rubbery stuff you use to stop carpet mats from slipping, between the camera and the QR plate. It seems to make a difference. SignatureJoan http://www.flickr.com/photos/joan-in-manly : Try applying a *very thin* coating of rubber solution (of the type : found in bicycle puncture repair kits) to the composite pad of the : Manfrotto QR plate. : : Allow the rubber solution to dry completely before using the plate : with the camera, otherwise it might adhere rather too well. <g> > I have a Hoya 72mm CP for my 18-200VR and have now have a 70-300VR > which is 67mm. > > Do filters mounted on step down rings cause any loss of clarity? Your filter is larger than the lens opening, the ring is of course just "air" and the sensor is cropped (I assume as you're using Nikon lenses) so there shouldn't be any problem (vignetting). Most rings are fairly thin and shallow and won't cause vignetting even with FF, unless at wide angle and wide open. You're more likely to get vignetting due to the circ-pol than the ring. Cheers, Alan Signature-- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm -- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm -- [SI] gallery & rulz: http://www.pbase.com/shootin -- e-meil: Remove FreeLunch. |
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