View Full Version : Canon 17-40mm + Hoya 77mm close-up lens?
skimer
28th of December 2005 (Wed), 18:41
Hi all!
Anyone know or had tried a close up lens on a wide angle lens like the canon 17-40mm? Any recommendation? I wanted to buy a filter lens to protect my lens, but wasn't sure if I should buy the regular UV Lens or the Close-up Lens. Sorry kind of a dumd question, but I am pretty new to this type, and your help would be much preciated.
Thanks!
Mike K
28th of December 2005 (Wed), 18:55
Hi all!
Anyone know or had tried a close up lens on a wide angle lens like the canon 17-40mm? Any recommendation? I wanted to buy a filter lens to protect my lens, but wasn't sure if I should buy the regular UV Lens or the Close-up Lens. Sorry kind of a dumd question, but I am pretty new to this type, and your help would be much preciated.
Thanks!
You are talking apples and oranges here. The UV filter is simply a piece of glass (often coated to reduce internal reflections) which should reduce UV transmission. It should do nothing to the visible image. A close up filter is a magnifying glass used to reduce the minimum focal length, and thus is appropirate for making a close shot even closer. (ie get closer to something small so it appears bigger in the frame). They add significant distortion and chromatic abberation (usually) to the edges of the image. I get the impression that this was not your intention, just physical protection?
As for the 17-40, I have found that flare is a significant problem with this lens. As a result, on mine, I have removed the UV filter and have gotten a longer hood (EW 83DII) since I use it with a 1.6 or 1.3x cropped cameras. The original hood was designed to prevent vignetting on a full frame camera and isn't very effective for cropped cameras. Filters exacerbate the flare problem.
Mike K
I Simonius
29th of December 2005 (Thu), 06:06
You are talking apples and oranges here. The UV filter is simply a piece of glass (often coated to reduce internal reflections) which should reduce UV transmission. It should do nothing to the visible image. A close up filter is a magnifying glass used to reduce the minimum focal length, and thus is appropirate for making a close shot even closer. (ie get closer to something small so it appears bigger in the frame). They add significant distortion and chromatic abberation (usually) to the edges of the image. I get the impression that this was not your intention, just physical protection?
As for the 17-40, I have found that flare is a significant problem with this lens. As a result, on mine, I have removed the UV filter and have gotten a longer hood (EW 83DII) since I use it with a 1.6 or 1.3x cropped cameras. The original hood was designed to prevent vignetting on a full frame camera and isn't very effective for cropped cameras. Filters exacerbate the flare problem.
Mike K
Just to say I havent noticed any flare prob on my copy of te 17-40, and that yes the UV filter is just for protection.
Personally , Im very glad I used it from the start, when I see some of the crap that gets on it - I wouldnt wnat that on my front element!!!
The close up filter is a different animal altogether - it migfght be quiet interesting to use!
The 17-40- lets you focus REALLY close anyway so my suspicion is that with a close up filter you would almost be touching the subject you were trying to shoot
I think using a close up on a different lens would work better, I don't think the 17-40+ close up would be a very good combo, but hey- it's cheap, try it if you want, nothing to stop you!
:-):D :D
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