Comments on: Canon 400D Digital Rebel XTi SLR Review Released

By: John

John — Fri, 06 Jan 2012 13:02:31 +0000

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By: John

John — Fri, 06 Jan 2012 01:06:44 +0000

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By: scape

scape — Thu, 24 Apr 2008 20:23:20 +0000

to keep this post going
possibly, but i’d guess that ir wavelengths are the same everywhere, find the exact cut offs and it should be well within reason (though thickness will vary). a professional ir filter will outperform that in camera lens anyways. it’s sad that one has to even do this, it should be an external lens filter

By: Markus

Markus — Wed, 14 Nov 2007 00:19:11 +0000

On the discussion of IR filters, I have a 400D I use for astronomy and normal use. I’m aware having the internal IR filter removed would improve the astronomy shots greatly but will make normal day shot very red. One option that was mentioned earlier was to put on an external IR filter, my question is, will an external IR filter affect the normal use photo quality due to differences in the specs of the original internal IR filter and the after market external IR filter. Assuming that the internal processing of the 400D had been tuned to its standard hardware (including the original internal filter)?

Thanks.

By: ShaolinTiger

ShaolinTiger — Wed, 15 Aug 2007 07:25:31 +0000

Help-Please: You need to make a much longer exposure to compensate for the light lost by using the IR filter. Try using M (Manual) mode and experiment with exposures like f/8 at 15 seconds. Reduce or increase shutter speed to adjust exposure.

By: help-please

help-please — Tue, 14 Aug 2007 02:59:49 +0000

would like to know how to see somthing other than the sun with a IR (R72) FILTER, 18-55mm, and an xti.
Are there settings to change to make the CMOS more sensitive so i’ll be able to see somthing other than black

By: Silencers

Silencers — Tue, 12 Sep 2006 10:00:10 +0000

Oooh, that clears up a lot of things. Thanks!

By: ShaolinTiger

ShaolinTiger — Mon, 11 Sep 2006 11:14:11 +0000

Silencers: No that’s not true, Canon mounts are universal as are Nikon, the other main contender is the 4/3rds system. Some news lenses are digital only, this means they will fit on old cameras, as they are standard mounts, but the autofocus isn’t backwards compatible. But old lenses fit on new digital bodies, again mostly with manual focus. There is no such thing as a model specific lens, that’d be silly for the manufacturer to limit themselves so much.

By: Silencers

Silencers — Mon, 11 Sep 2006 10:10:29 +0000

I agree with bodies coming and going. I’m abit concerned about the mounts though. I think some lenses have mounts specifically only for the Rebel and Digital Rebel mounts and won’t fit on other Canon bodies.

Can anyone confirm this? I don’t own an SLR system yet so I’d like to know these things before I start investing in them.

By: ShaolinTiger

ShaolinTiger — Sun, 10 Sep 2006 06:17:41 +0000

Albert: Yah lenses are for life, bodies come and go, that’s why when you go SLR you go for a system not a camera. The 5D is nice, but I’m not really into full frame yet, I prefer the extra focal length a 1.5x or 1.6x cropped sensor gives. Ah didn’t watch the video, youtube is banned here..Of course the former is preferable, but the latter is often more practical.