Canon 400D + Tamron 17-50mm for IR?

[ptyap]

Hi, I am just wondering whether the above combination (plus a Hoya R72 filter) would enable me to do IR photography? Please enlighten. Thanks.

[inckurei]

yeah. as long as the IR filter fits your lens.
i think 400d should be quite sensitive to IR light. can always do a test with your tv remote controller =D

[dejected]

17-50 will give you hot spots

[night86mare]

Originally Posted by inckurei yeah. as long as the IR filter fits your lens. i think 400d should be quite sensitive to IR light. can always do a test with your tv remote controller =D

Contrary to that, I had done an IR shoot with a 400D user before, exposures were nearly almost in the range of 20-30 seconds, and it was quite sunny.

Sensitive to IR yes, but needs very long exposures.

Don't know about the 17-50mm, check the lens list in the IR forums, if it is not there then wait around for a user to reply, hehe.

One good point about the 400D I noticed is that it is way easier to obtain the correct WB compared to Pentax or Olympus, have never touched a Nikon DSLR before, at least with respect to IR so no comparison there. =)

[ptyap]

Originally Posted by dejected 17-50 will give you hot spots

Really? I have a Canon 10-22mm too, but I think it's really quite expensive to get an IR filter for it's size (77mm).

[dejected]

check my flickr.. i used a 17-50 and you can see hot spots

Originally Posted by ptyap Really? I have a Canon 10-22mm too, but I think it's really quite expensive to get an IR filter for it's size (77mm).

[ptyap]

Originally Posted by dejected check my flickr.. i used a 17-50 and you can see hot spots

Can you point out which particular photo(s) of yours shows hotspot? You have quite a number of photos in you flickr page. Does the filter matter? Does Cokin IR filter differ anyhow from Hoya R72? Please enlighten. Thanks.

[dejected]

[PandaOng]

your does not seems that bad for the Hotspot. you may wish to cover your viewfinder when taking the shots. it will help to get rid of the hotspot especially when the sun is behind you.

[PandaOng]

Originally Posted by ptyap Really? I have a Canon 10-22mm too, but I think it's really quite expensive to get an IR filter for it's size (77mm).

Yes, the 77mm will cost you in the range of $200 plus....

I am using a 17-40mm (77mm thread) but due to the 1.6x Crop factor in 400D, you may consider getting a step-down ring and used a smaller IR filter. i am using a 67mm IR filter. have also used a 58mm before. just got a slight Vignetted on the side.

by saying that, you will also need to consider your range, as you are using a really wide lens.

Hope it help!

[ptyap]

Originally Posted by PandaOng Yes, the 77mm will cost you in the range of $200 plus.... I am using a 17-40mm (77mm thread) but due to the 1.6x Crop factor in 400D, you may consider getting a step-down ring and used a smaller IR filter. i am using a 67mm IR filter. have also used a 58mm before. just got a slight Vignetted on the side. by saying that, you will also need to consider your range, as you are using a really wide lens. Hope it help!

What about getting the cokin system instead? 77mm Adaptor + Holder + P007 costs about $60. What do you think?

[PandaOng]

Does the holder system works? guess not as there will be light leak. alt, try Ark19 method on DIY Filter ring found on the sticky.

[ptyap]

Originally Posted by PandaOng Does the holder system works? guess not as there will be light leak. alt, try Ark19 method on DIY Filter ring found on the sticky.

OK. Thanks.

[dejected]

the photographs taken above are by using a cokin 007 know where you stand and judge from there... ensure light leaks are ZERO

[ptyap]

Originally Posted by dejected the photographs taken above are by using a cokin 007 know where you stand and judge from there... ensure light leaks are ZERO

You mean you're using the cokin holder and you managed to keep the light leak at zero level? If yes, please share how you do so.

[dejected]

set the tripod to about waist level or slightly higher... see where you shadow is casted and, using your shadow block the whole camera...

Originally Posted by ptyap You mean you're using the cokin holder and you managed to keep the light leak at zero level? If yes, please share how you do so.

[ptyap]

Originally Posted by dejected set the tripod to about waist level or slightly higher... see where you shadow is casted and, using your shadow block the whole camera...

Then I suppose covering the lens with a piece of black cloth would also work?

[dejected]

it will... so long as there's no light leak.. no matter you use silicon, shadow or cloth

Originally Posted by ptyap Then I suppose covering the lens with a piece of black cloth would also work?

[ptyap]

Originally Posted by dejected it will... so long as there's no light leak.. no matter you use silicon, shadow or cloth

OK. Thanks, bro. I can now get the cokin system with P007 and try out IR photography with both my Tamron 17-50mm and Canon 10-22mm.

[dejected]

you're most welcome

Originally Posted by ptyap OK. Thanks, bro. I can now get the cokin system with P007 and try out IR photography with both my Tamron 17-50mm and Canon 10-22mm.