GT-1 image have a defect

Discussion about Ricoh GR Digital II

GT-1 image have a defect

Postby Fairly » Tue Mar 06, 2012 2:28 pm

Who can help? the image was taken with the telephoto conversion lens "GT-1" was added. With 5.9 mm focal length will be no errors. Maybe 1 of 5 images is affected by the error.
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Re: GT-1 image have a defect

Postby odklizec » Tue Mar 06, 2012 3:15 pm

I'm afraid, what you are experiencing is a known "orange flare" problem seen in GT-1 shots (especially in high contrast and backlight scenes). It's caused by complicated nature of the GT-1 construction. It was discussed for example here:
www.ricohforum.com/phpbb/viewtopic.php? ... 757&p=8387
And I'm afraid, there is not much you can do with that, except to learn how to avoid the situations causing this issue and to post-process your photos to reduce this issue.

The problem is, that Ricoh engineers had to deal with two opposing problems. To make the adapter BIG and flare resistant or relative small but at a cost of flare? It's pretty complicated to make the tele-extension lens for wide angle lens and without loosing even a single EV of aperture. It's pretty unique what Ricoh managed to achieve with the GT-1, because as far as I know, there is no other tele-extension lens on the market like the GT-1. And it still amazes me, how sharp the GT-1 is. Sadly, the orange flare kills the fun and this was also the reason why the GT-1 has not been made for GRDIII/IV.
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Re: GT-1 image have a defect

Postby Fairly » Tue Mar 06, 2012 3:29 pm

Thank you very much for helpful, competent answer. I appreciate the picture quality of the GRDII + GT-1 lens.
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Re: GT-1 image have a defect

Postby odklizec » Tue Mar 06, 2012 4:00 pm

You are welcome! I took some of my best photos with GRDII and GT-1. I really wish Ricoh would produce a GRD with fast 40mm lens (starting at f1.4 o so). I think it would be a fast seller? ;)
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Re: GT-1 image have a defect

Postby CHICHORNIO » Tue Mar 06, 2012 4:31 pm

odklizec wrote:You are welcome! I took some of my best photos with GRDII and GT-1. I really wish Ricoh would produce a GRD with fast 40mm lens (starting at f1.4 o so). I think it would be a fast seller?


Me too! I love the Tele lens with my GRD2. And I`m in your boat too! I`m still waiting for the GRD V? May be? That will kill my actual 40mm Sigma DP2s (beatiful pictures out of the camera up to 50 iso, but dificult to handle). I`m posting an example of the flare caused by the GT-1. It`s a matter of practice to avoid this without getting into PS.
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Re: GT-1 image have a defect

Postby CHICHORNIO » Tue Mar 06, 2012 4:40 pm

odklizec wrote:I really wish Ricoh would produce a GRD with fast 40mm lens (starting at f1.4 o so)


By the way Pavel... Any clue about a new GRD? I need to upgrade my gear soon, and I was thinking in the Sigma DP2 Merrill, but... if Ricoh releases a new GRD V with a normal lens, I will think it over...
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Re: GT-1 image have a defect

Postby Fairly » Tue Mar 06, 2012 5:07 pm

@odklizec
You can be proud of what you've achieved, especially your GRD II photos at Flickr.
About 40mm (and Sigma DP2) I share your opinion.

@chichornio
Thank you for the picture!
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Re: GT-1 image have a defect

Postby Blow-in » Tue Mar 06, 2012 9:30 pm

I like the GT-1 too - I tend to shoot in 1:1 (ie square) format with it to reduce the risk of flare....of course you can achieve a similar effect with a crop.
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EXIF-Data
Image taken on: Thu Jun 30, 2011 9:46 am
Focus length: 8.4 mm
Shutter speed: 1/1410 Sec
F-number: F/4
ISO speed rating: 80
Whitebalance: Auto
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR DIGITAL 2
Exposure program: Aperture priority
Exposure bias: 3/10 EV
Metering mode: Pattern
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Re: GT-1 image have a defect

Postby Fairly » Wed Mar 07, 2012 4:45 am

Blow-in wrote:I like the GT-1 too - I tend to shoot in 1:1 (ie square) format with it to reduce the risk of flare....of course you can achieve a similar effect with a crop.


Thanks a lot for response, I like try the 1:1 crop on my GT-1 pictures...
Last edited by Fairly on Wed Mar 07, 2012 8:10 am, edited 1 time in total.
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Re: GT-1 image have a defect

Postby CHICHORNIO » Wed Mar 07, 2012 5:24 am

Fairly wrote:I like to dry the 1:1 crop on my GT-1 pictures...

Just an advice... Try to keep the iso up to 100. If you want to print the file, it will be a 7mp picture.
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