rgp2130
Topic Author
Posts: 9
Joined: Mon Jan 28, 2013 1:30 pm

Lens Purchase

Tue Feb 05, 2013 5:46 am

Dear All,

I had posted this reply to my thread in regards to my Canon EOS 1100D, hopefully if I start a new thread it will garner some traction, I was thinking of getting another lens and this was my first choice as it offers both a good wide angle and telephoto capability and also hopefully to eliminate the barrel effect.

Canon EF-S 18-200mm f/3.5-5.6 IS

http://shop.usa.canon.com/webapp/wcs...vlet/product_10051_10051_200707_-1


Could you please let me know if this is a good buy as i dont need anything fancy and 200mm zoom is more than enough for me at this early stage.

Thanks

Giridhar.
 
vikkyvik
Posts: 11765
Joined: Thu Jul 31, 2003 1:58 pm

RE: Lens Purchase

Tue Feb 05, 2013 7:50 am

Quoting rgp2130 (Thread starter):
as it offers both a good wide angle and telephoto capability and also hopefully to eliminate the barrel effect.

I haven't used that lens, but with such a large zoom range, I wouldn't be surprised if it loses quality at one or both ends, and probably has barrel and pincushion distortion at the ends as well. A large zoom range will typically have some compromises.

You can get rid of barrel and pincushion distortion pretty easily in editing software. Though to be honest, it's almost never enough of an issue for me to bother getting rid of it. I used the 18-55 IS lens quite a lot (I think that's what you have), and actually found it to be pretty darn good for the price.

I'd suggest looking up lens reviews. Check out page 3 of this one:

http://www.dpreview.com/lensreviews/canon_18-200_3p5-5p6_is_c16/

Setting a brand new record for distortion, the 18-200mm weighs in with a decidedly disconcerting 3.4% barrel at wideangle; this is also a complex, wave-type distortion with re-correction towards the corners. The pattern shifts rapidly to pincushion, peaking at 50mm and -1.9% (again likely to be readily visible in real-world shots) before settling back to more reasonable levels at telephoto.

If lessening distortion is your goal, I'd be wary of that lens (or any lens with a huge zoom range).
I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 
rgp2130
Topic Author
Posts: 9
Joined: Mon Jan 28, 2013 1:30 pm

RE: Lens Purchase

Tue Feb 05, 2013 12:38 pm

Hi Vikkyvik,

Thanks for your reply and advise, i checked around and since you mentioned that the zoom plays a part in distortion I also was looking at a different lens.

Canon EF-S 18-135mm f/3.5-5.6 IS:

IS/" target="_blank">http://www.canon-europe.com/For_Home...es/EF-S/EF-S_18-135mm_f3.5-5.6_IS/

I could not find a review so I was hoping for your input, will getting a lower zoom such as the 18-135 help resolve my problem. Thanks.


Giridhar.
 
vikkyvik
Posts: 11765
Joined: Thu Jul 31, 2003 1:58 pm

RE: Lens Purchase

Tue Feb 05, 2013 3:36 pm

Quoting rgp2130 (Reply 2):
I could not find a review so I was hoping for your input, will getting a lower zoom such as the 18-135 help resolve my problem.

I'm not convinced that you have a problem. Distortion is a characteristic of zoom lenses; you'll never entirely get rid of it.

How about posting a photo or two so we can see what you're talking about?
I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 
rgp2130
Topic Author
Posts: 9
Joined: Mon Jan 28, 2013 1:30 pm

RE: Lens Purchase

Wed Feb 06, 2013 6:04 am

Hi Vikky,

I cannot actually find any photos which shows the barrel effect. But since i have uploaded them, I would like to show you two photos which were taken with my Eos 1100D, one is a inflight photo look out towards the clouds formation and the second is a picture of a flower. For some reason the rest of my photo's look exactly like the first one and i cannot get the sharpness I want as in the flower photo. It may be that the weather did play a role when i took the photo but the inflight photo was taken at altitude and it still looks grainy. Can you please help me and advise me on what to do to improve the quality. Thanks.


 
vikkyvik
Posts: 11765
Joined: Thu Jul 31, 2003 1:58 pm

RE: Lens Purchase

Wed Feb 06, 2013 3:56 pm

Quoting rgp2130 (Reply 4):
Can you please help me and advise me on what to do to improve the quality.

Can't really comment on quality of a resized photo.

I was under the impression that the barrel distortion was a major issue for you, but now it looks like it only pops up occasionally. I'm honestly not sure why you feel it's an issue.
I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 
rgp2130
Topic Author
Posts: 9
Joined: Mon Jan 28, 2013 1:30 pm

RE: Lens Purchase

Thu Feb 07, 2013 5:57 am

Hi Vikkyvik!

No, I agree that its not an issue, just a concern i had for photo's that I will take from wide angle perspective. Yes I understand that the photo's on here are of a lower res and a small size but i wanted to just give you an example of what I mean. I had uploaded two photo's taken with my phone camera (8mp) and they got rejected... for the same reason, contrast too high, soft contrast and grainy picture. That is something i would also like help with.


Cheers,

Giridhar.
 
dazbo5
Posts: 2717
Joined: Tue Mar 29, 2005 8:05 am

RE: Lens Purchase

Thu Feb 07, 2013 8:58 am

Quoting rgp2130 (Reply 6):
I had uploaded two photo's taken with my phone camera (8mp) and they got rejected

given the quality standards of this site, you aren't going to be able to upload photos taken from your camera phone. The sensor on camera phones simply don't have the quality for uploading here.

The distortion you refer to from your lens really shouldn't be a problem for uploading photos here. If you look in the database, you'll find many shots where barrel and pincushion is apparent. It's a natural problem with lenses and you can use it to your advantage at times.

Darren
Equipment: 2x Canon EOS 50D; Sigma 10-20 EX DC HSM, 50-500 EX APO DG, Canon 24-105 f/4 L, Speedlite 430EX
 
celestar
Posts: 495
Joined: Mon Jul 09, 2001 11:37 am

RE: Lens Purchase

Tue Feb 19, 2013 8:12 am

I am not sure if you use 18-200 you can truly get 200mm tele effect out of this lens.
There is a term I forgot but apparently, in these super zoom, when you take at 200mm, you are not getting that focal length at the tele side. A better suggestion is to get a used 70-200/4, a superb zoom, I think, the best made by Canon. Don't spent on IS unless you can afford it.
 
Itay747
Posts: 40
Joined: Thu Aug 23, 2012 12:29 am

RE: Lens Purchase

Thu Feb 21, 2013 10:10 am

I have used the ef-s 18-200 and it's quite bad! It doesn't have USM and L mark on it, aperture is 3.5-5.6 of course. It's one of Canon's bad lenses. It costs on Amazon nearly 400 USD. Instead, I would buy the ef 70-300 IS USM, one of canon's best non-L lens out there, way better glass than the 18-200. It costs on Amazon 300 USD. If you can save some money, buy the 70-200 f/4L (costs on Amazon 575 USD, worth any dollar!) The combination of EOS 1000D/1100D and an EF 70-200 f/4L is one of the best. How much $ can you afford?

Itay
 
vikkyvik
Posts: 11765
Joined: Thu Jul 31, 2003 1:58 pm

RE: Lens Purchase

Thu Feb 21, 2013 4:38 pm

Quoting Itay747 (Reply 9):
I would buy the ef 70-300 IS USM, one of canon's best non-L lens out there, way better glass than the 18-200. It costs on Amazon 300 USD. If you can save some money, buy the 70-200 f/4L (costs on Amazon 575 USD

Note that both those prices are for used lenses, not new.

That said, there's nothing wrong with buying used lenses - I've had good luck with that.

Regarding the 70-300 IS USM, it's a decent lens, but gets quite soft above 250mm.
I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 
Itay747
Posts: 40
Joined: Thu Aug 23, 2012 12:29 am

RE: Lens Purchase

Thu Feb 21, 2013 10:05 pm

Quoting vikkyvik (Reply 10):
Regarding the 70-300 IS USM, it's a decent lens, but gets quite soft above 250mm.


Every lens lacks it's quality when taking photos near the equivalent. Although the 70-300 is not that sharp and doesn't get you those "chrisp" photos, it's one of the best lenses out there among it's range. Personally, I would save money for the 70-200 ( I own the 70-200 2.8).

Itay
 
vikkyvik
Posts: 11765
Joined: Thu Jul 31, 2003 1:58 pm

RE: Lens Purchase

Thu Feb 21, 2013 11:48 pm

Quoting Itay747 (Reply 11):
Every lens lacks it's quality when taking photos near the equivalent.

Have to disagree there. My 70-200 maintains quality quite nicely all the way out to 200mm.

And I'm not talking about just a little softness. I absolutely never shot with the 70-300 IS USM above 260mm. I can crop a 200mm shot with the 70-200 and still get far superior quality to the 70-300 IS USM at 300mm.

Basically, I consider the 70-300 a 70-250, for practical purposes. I would buy a used 70-200 over the 70-300 any day.

With that said, your mileage may vary.
I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 
Itay747
Posts: 40
Joined: Thu Aug 23, 2012 12:29 am

RE: Lens Purchase

Fri Feb 22, 2013 3:31 pm

I have found out that the 70-300L by canon is one of the best (even on 300mm). It costs a bit more than what I have- 70-200 2.8. I am thinking ti buy a 300 f4L IS though.. I have this dilemma about the 300f4L IS vs the 400 5.6L...
Anyway, although the 70-300 IS USM isn't perfect, it might be the solution for those who can afford to much $.

Itay

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