Skip to content

SANParks.org Forums

View unanswered posts | View active topics






Post new topic Reply to topic  Page 5 of 6
 [ 82 posts ]  Go to page Previous  1, 2, 3, 4, 5, 6  Next
Author Message
 Post subject: Re: 2x Converter or Telephoto Lens
Unread postPosted: Mon Jan 04, 2010 4:00 pm 
Offline
Junior Virtual Ranger
Junior Virtual Ranger
User avatar

Joined: Tue May 19, 2009 2:15 pm
Posts: 1901
Location: Johannesburg - too far from the closest Sanpark
I use a 2x Kenko t/c on my 80-200mm F2.8 I don't have autofocus issues. I think I get better quality than using a Sigma 150-500mm (not had a good chance to compare shots yet).

Duques, bert, should we start a new thread in the Camera Club forum to discuss under and over exposing?

_________________
The 'mite formerly known as joshilewis

FGASA Level 1 Guide

Glen Reenen TR

15-18 June: Berg-en-dal


Top
 Profile  
 
 Post subject: Re: 2x Converter or Telephoto Lens
Unread postPosted: Wed Feb 17, 2010 7:32 pm 
Offline
Junior Virtual Ranger
Junior Virtual Ranger

Joined: Wed Oct 03, 2007 10:00 am
Posts: 579
Location: Durban Kwazulu Natal SA
to see the effect of the converters take a look at the 400mm shootout listed on www.ejphoto.com it is interesting to see the result of this dollar test.


Top
 Profile  
 
 Post subject: Re: 2x Converter or Telephoto Lens
Unread postPosted: Wed Feb 17, 2010 7:52 pm 
Offline
Junior Virtual Ranger
Junior Virtual Ranger
User avatar

Joined: Thu Apr 16, 2009 7:10 pm
Posts: 969
Location: Ruimsig, Gauteng
I have had long hard thoughts about this and spoke to allot of people.The canon 100-400 is a better lens than the Sigma 150-500 but the canon costs allot more so for the price of the sigma its more worth it how can I say its more value for money.Think the Canon almost R10 000 more expensive than the sigma and the sigma doesn't produce bad shots.
If I were you get the Sigma or if financially possible the Canon and if you not happy then get a converter.

_________________
'When someone shares something of value with you, and you benefit from it, you have a moral obligation to share it with others'


3 Male lions hunting buffalo: The Movie!!!


Top
 Profile  
 
 Post subject: Re: 2x Converter or Telephoto Lens
Unread postPosted: Wed Feb 17, 2010 8:24 pm 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar

Joined: Thu Jan 13, 2005 9:02 pm
Posts: 17118
Location: mind in SA, body in The Netherlands
joshilewis , i am slowly moving discussion threads to the camera club thread
Will make one with all the under-and over exposing topic i can find
Will move all technical discussion to the Camera Club
More suited :thumbs_up:

_________________
Submit your Images


Top
 Profile  
 
 Post subject: Use a Converter or not?
Unread postPosted: Thu Jun 09, 2011 10:35 pm 
Offline
Senior Virtual Ranger
Senior Virtual Ranger
User avatar

Joined: Tue Jun 07, 2011 7:07 pm
Posts: 13636
Location: Living in The Netherlands but raised in South Africa
Hi everybody,

We are going to Kruger in July 2011 and I have read a lot about converters.
I have never used one before and would like to have some advice about this issue before we leave.

Should I buy a converter for my kit(Nikon D7000 with Nikkor AF-S DX 18-105/3.5-5.6G VR and
Nikkor AF-S VR 70-300/4.5-5.6G IF-ED Zoom)? :hmz:

I heard that the range of the zoom is normally 105-450mm with a Nikon DX D-SLR

Would this mess up the pictures or would it extend my range to 600mm using my zoom :mrgreen:


Thanks for the advice

Greetings,

Gert-Jan

_________________
Live life on the edge but be careful not to fall off! :wink:

2013 Trip: Satara, Lower Sabie, Hluhluwe, Berg-en-Dal, Lower Sabie, Satara, Elephant Plains(Sabi Sands) :dance:

Our 2013 Trip Report: Vinkie and Apex Predator back in the bushveld


Top
 Profile  
 
 Post subject: Re: Use a Converter or not?
Unread postPosted: Thu Jun 09, 2011 10:46 pm 
Offline
Honorary Virtual Ranger
Honorary Virtual Ranger
User avatar

Joined: Fri Jan 14, 2005 5:42 pm
Posts: 17943
Location: Red sand, why do I keep thinking of red sand?
Gert-Jan, you can use it, but!
The 70-300, which is the only lens you should use it on, will become a f/8 lens with the converter on. Not a problem, except for autofocus. Your camera will not AF with f/8 lenses, so it's manual focus only.

It does mess up pictures a bit, as in that faults in the lens will be enhanced. I'm not using Nikon, so have no idea of the quality of that 70-300. Simple guideline, if it cost less than 1000 euro you might indeed see less quality.

Borrow or hire one, and go birding in Holland. I know quite a few good spots! That will show you what the quality and the handling will be like. Just don't go for herons, they stand still mostly. Try for Gaaien, rietzangers and such. That will be much like photography in Kruger.

_________________
Arriving currently: The photos from our trip! Overhere! :yaya:

Feel free to use any of these additional letters to correct the spelling of words found in the above post: a-e-t-n-d-i-o-s-m-l-u-y-h-c


Top
 Profile  
 
 Post subject: Re: Use a Converter or not?
Unread postPosted: Thu Jun 09, 2011 11:02 pm 
Offline
Senior Virtual Ranger
Senior Virtual Ranger
User avatar

Joined: Tue Jun 07, 2011 7:07 pm
Posts: 13636
Location: Living in The Netherlands but raised in South Africa
@DuQues: Thanks for the tip....I don't know if it's possible to hire a converter in Holland?

Don't want to spend too much money on a converter but an Converter Kit for the Nikon costs 200,- euro by Kenko....better to buy a good Flashlight for this money I think :mrgreen:

The 70-300mm lens is a good Super-zoom lens of course a xx-500mm would be nicer but you must have the budget and the time to visit places like Kruger more often :lol: unfortunately we don’t have that opportunity :(

Which spots do you recommend for birding?

_________________
Live life on the edge but be careful not to fall off! :wink:

2013 Trip: Satara, Lower Sabie, Hluhluwe, Berg-en-Dal, Lower Sabie, Satara, Elephant Plains(Sabi Sands) :dance:

Our 2013 Trip Report: Vinkie and Apex Predator back in the bushveld


Top
 Profile  
 
 Post subject: Re: Use a Converter or not?
Unread postPosted: Fri Jun 10, 2011 7:54 am 
Offline
Honorary Virtual Ranger
Honorary Virtual Ranger
User avatar

Joined: Fri Jan 14, 2005 5:42 pm
Posts: 17943
Location: Red sand, why do I keep thinking of red sand?
PM sent.

_________________
Arriving currently: The photos from our trip! Overhere! :yaya:

Feel free to use any of these additional letters to correct the spelling of words found in the above post: a-e-t-n-d-i-o-s-m-l-u-y-h-c


Top
 Profile  
 
 Post subject: Canon 2x extender
Unread postPosted: Thu Jul 26, 2012 5:31 pm 
Offline
Junior Virtual Ranger
Junior Virtual Ranger
User avatar

Joined: Tue Jul 24, 2007 11:22 am
Posts: 4248
Location: Boksburg
Can anyone please tel me what a 2x extender lense do :hmz: , reason why I ask, a friend of my FIL told him that when you use a 2x extender lense on his 300 mm lense it will be like a 600mm lense :hmz:

_________________
Say NO to hotels in KNP!!!

KNP: Berg en Dal 7 to 10 August 2015


Top
 Profile  
 
 Post subject: Re: Canon 2x extender
Unread postPosted: Thu Jul 26, 2012 5:45 pm 
Offline
Moderator
Moderator
User avatar

Joined: Sun Jan 16, 2005 3:19 pm
Posts: 7948
Location: Portsmouth, England
That is exactly what it does.

But. You can only use them on certain lenses, usually only L series but not all of them. And you will loose two F-Stops, making the lens a lot "slower" e.g. on a 2.8 rated lens you would loose 2.8 and 4 so the best F-Stop you would get would be 5.6.

_________________
The final nominations for the 2014 Forum Awards are here. Please cast your vote and celebrate the forum and its wonderful members.


Top
 Profile  
 
 Post subject: Re: Canon 2x extender
Unread postPosted: Thu Jul 26, 2012 5:56 pm 
Offline
Honorary Virtual Ranger
Honorary Virtual Ranger
User avatar

Joined: Fri Jan 14, 2005 5:42 pm
Posts: 17943
Location: Red sand, why do I keep thinking of red sand?
Correct, but there are downsides to it;
- it shows all the faults of the lens.
- autofocus will be slower, or be switched off entirely
- switching it in and out can let dust onto your sensor

Have a look at this page. It is a good appraisal.
On my 100-400 I do use the 1.4, but I do not have AF then, as my 7D will not use AF above f/5.6.

But if you have a good lens (L-series) and you really need the longer lens it is a great tool.

_________________
Arriving currently: The photos from our trip! Overhere! :yaya:

Feel free to use any of these additional letters to correct the spelling of words found in the above post: a-e-t-n-d-i-o-s-m-l-u-y-h-c


Top
 Profile  
 
 Post subject: Which teleconverter to use with Canon 550D?
Unread postPosted: Fri Oct 05, 2012 8:20 am 
Offline

Joined: Mon Jun 11, 2012 9:33 am
Posts: 16
Location: Pretoria
I am in the process of buying a better camera (in stead of a good "mik en druk" ) for the first time, and I have decoded on the Canon 550D, the best deal I could find in my budget- and I have seen a number of good reviews also on this forum.

I am looking for a teleconverter to use with the canon 55-250 lens? Which would you recommend?

_________________
Satara : 8,9 July 2013
Lower-Sabie : 10,11,12,13, July 2013


Top
 Profile  
 
 Post subject: Re: Which teleconverter to use with Canon 550D?
Unread postPosted: Fri Oct 05, 2012 9:12 am 
Offline
Honorary Virtual Ranger
Honorary Virtual Ranger
User avatar

Joined: Fri Jan 14, 2005 5:42 pm
Posts: 17943
Location: Red sand, why do I keep thinking of red sand?
To be honest I would recommend none.

Your camera will use autofocus up to f/5.6. The teleconverter will take 1 (1.4x) or 2 (2x) stops of light which means that in combination with your f/4-5.6 lens you will have to use manual focus all the way.

If you decide to buy one anyway I would go for the Canon 1.4, that one does not degrade the image quality. With the 2.0 version you will see the IQ going down.

_________________
Arriving currently: The photos from our trip! Overhere! :yaya:

Feel free to use any of these additional letters to correct the spelling of words found in the above post: a-e-t-n-d-i-o-s-m-l-u-y-h-c


Top
 Profile  
 
 Post subject: Re: Which teleconverter to use with Canon 550D?
Unread postPosted: Mon Oct 08, 2012 7:59 pm 
Offline
User avatar

Joined: Sat Feb 07, 2009 10:27 pm
Posts: 137
Hi Gekophobe,

The advice given so far is probably spot on - the reason is that the lens you have is a kit lense - and by the way a very superb one at that. My wife has one of those lenses with her D400 and she gets fantastic pics - in fact I have a 70 - 300 lens that is hugely more expensive and I have to say that it does not give that much better pics.

If you go to a much better lens as I feel sure you will want to do eventually then you can consider a converter and the best one is the 1.4.

Can I add - you will lose about 2 stops on the lense but in the really bright light we have here it does not make that much difference - you should be able to get really good shots - look for a photographer called Gary Parker on the web - his pics are superb and he uses a 1.4 with his 100 - 400 lense.

KR

KC


Top
 Profile  
 
 Post subject: Re: Which teleconverter to use with Canon 550D?
Unread postPosted: Mon Oct 15, 2012 12:43 pm 
Offline

Joined: Mon Jun 11, 2012 9:33 am
Posts: 16
Location: Pretoria
Thank you for the good advice. I have now actually started playing around with the new camera - taking pictures of everything I see:). It is an awesome experience! I have to admit that I have a lot to learn and I have been thinking of taking a course or two. In addition, there is so much useful info on the forum. Can't wait for my next Kruger trip which is unfortunately only in July next year! In the meantime we have atrip to Golden Gate planned-so I will have time to practice.

_________________
Satara : 8,9 July 2013
Lower-Sabie : 10,11,12,13, July 2013


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 82 posts ]  Go to page Previous  1, 2, 3, 4, 5, 6  Next



Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group

Webcams Highlights

Addo Nossob Orpen Satara
Addo Nossob Orpen Satara
Submitted by Kokkewiet at 08:25:02 Submitted by Kokkewiet at 12:27:17 Submitted by RonelMentz at 22:02:55 Submitted by Kokkewiet at 08:53:41