Ricoh GR + GT1 - useful or not?

Discussion about Ricoh GR

Ricoh GR + GT1 - useful or not?

Postby odklizec » Mon Sep 30, 2013 2:46 pm

Hi folks,

I'm happy to report that I'm finally in a possession of a GR for the test and review! I'm now a part of GR Ambassador program, which means I'm supposed to take some photos and put together my thoughts about the GR. Then I will join the existing number of GR ambassadors at special GR site: http://gr.pentax.eu I will do my best to put together some nice photos and stay as objective as possible in my review ;)

The first test I did after receiving the camera, and after setting it according my taste, was something I was quite curious about since the GR announcement. Will the GR works with the "ancient" GT-1 tele extension lens, originally developed for GRDI and II? As you may remember, I found the GT-1 lens practically useless with the GRD III and IV. The main reason was its brighter f1.9 lens and wider lens barrel. True, the GR lens barrel is even wider, however, it's also much shorter and the lens lowest f number is now 2.8. And these changes in GR design put me in a hope of a possible GT-1 reborn.

Because I don't have the GH-3 adapter yet, all I could do so far is a quick hand-held test. But even this unscientific test says that the GR+GT-1 looks promising! Although the GR+GT-1 combo will never win a corner sharpness contest, the center sharpness seems to be great. I would never use this combo for landscape photography, but it may be great addition for portraits? Stay tuned for a proper shots with GH-3 and comparison of 28mm, in-camera cropped 35mm mode and 40mm GT-1 test!

These are unmodified photos taken with GR + handheld GT-1:
R0000260_sm.jpg
R0000260_sm.jpg (334.96 KiB) Viewed 8885 times

EXIF-Data
Image taken on: Sun Sep 29, 2013 7:56 am
Focus length: 18.3 mm
Shutter speed: 1/125 Sec
F-number: F/4
ISO speed rating: 400
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Not defined
Exposure bias: -3/10 EV
Metering mode: Center-weighted average

R0000261_sm.jpg
R0000261_sm.jpg (343.21 KiB) Viewed 8892 times

EXIF-Data
Image taken on: Sun Sep 29, 2013 7:58 am
Focus length: 18.3 mm
Shutter speed: 1/200 Sec
F-number: F/4
ISO speed rating: 400
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Not defined
Exposure bias: -3/10 EV
Metering mode: Center-weighted average

R0000267_sm.jpg
R0000267_sm.jpg (539.59 KiB) Viewed 8917 times

EXIF-Data
Image taken on: Sun Sep 29, 2013 8:01 am
Focus length: 18.3 mm
Shutter speed: 1/200 Sec
F-number: F/4
ISO speed rating: 400
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Not defined
Exposure bias: -3/10 EV
Metering mode: Center-weighted average

R0000272_sm.jpg
R0000272_sm.jpg (540.64 KiB) Viewed 8885 times

EXIF-Data
Image taken on: Sun Sep 29, 2013 8:05 am
Focus length: 18.3 mm
Shutter speed: 1/200 Sec
F-number: F/3.5
ISO speed rating: 800
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Not defined
Exposure bias: -3/10 EV
Metering mode: Center-weighted average


Below shots show a real edge sharpness of GR+GT-1 combo and comparison with native 28mm and 35mm crop mode. Once again, these shots were taken by landholding the GT-1 in front of the GR lens, so they are not very scientific and precise example how the sharpness may look with GT-1 attached on GH-3.
28mm_f4.JPG
28mm_f4.JPG (978.55 KiB) Viewed 8566 times

EXIF-Data
Image taken on: Fri Sep 27, 2013 5:52 pm
Focus length: 18.3 mm
Shutter speed: 1/250 Sec
F-number: F/4
ISO speed rating: 100
Whitebalance: Auto
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Aperture priority
Exposure bias: 0 EV
Metering mode: Center-weighted average

35mm(crop)_f4.JPG
35mm(crop)_f4.JPG (993.05 KiB) Viewed 8542 times

EXIF-Data
Image taken on: Fri Sep 27, 2013 5:53 pm
Focus length: 18.3 mm
Shutter speed: 1/200 Sec
F-number: F/4
ISO speed rating: 100
Whitebalance: Auto
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Aperture priority
Exposure bias: 0 EV
Metering mode: Center-weighted average

28mm+GT1_40mm_f4.JPG
28mm+GT1_40mm_f4.JPG (778.65 KiB) Viewed 8472 times

EXIF-Data
Image taken on: Fri Sep 27, 2013 5:55 pm
Focus length: 18.3 mm
Shutter speed: 1/200 Sec
F-number: F/4
ISO speed rating: 100
Whitebalance: Auto
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Aperture priority
Exposure bias: 0 EV
Metering mode: Center-weighted average

28mm+GT1_40mm_f8.JPG
28mm+GT1_40mm_f8.JPG (889.75 KiB) Viewed 8434 times

EXIF-Data
Image taken on: Fri Sep 27, 2013 5:56 pm
Focus length: 18.3 mm
Shutter speed: 1/45 Sec
F-number: F/8
ISO speed rating: 100
Whitebalance: Auto
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Aperture priority
Exposure bias: 0 EV
Metering mode: Center-weighted average

35mm(crop)+GT1_50mm_f4.JPG
35mm(crop)+GT1_50mm_f4.JPG (834.23 KiB) Viewed 8418 times

EXIF-Data
Image taken on: Fri Sep 27, 2013 5:58 pm
Focus length: 18.3 mm
Shutter speed: 1/180 Sec
F-number: F/4
ISO speed rating: 100
Whitebalance: Auto
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Aperture priority
Exposure bias: 0 EV
Metering mode: Center-weighted average


If you are interested, you can find full resolution photos here:
http://www.flickr.com/photos/odklizec/s ... 045019106/

I'm sure both girls will shoot me one day for posting their photos ;)

EDITED 4.11.2013:
The GH-3 finally arrived and over the weekend I got a short chance to take some photos. As I've expected, the GH-3 did not improve the corner/edge sharpness degradation. In addition, the combination of GH-3 and step-down ring made the vignetting noticeably worse. Apparently, during the handheld test, I was able to hold the GT-1 at much closer instance to the GR lens, which effectively eliminated vignetting. On a positive side, the GT-1 seems to be still somewhat useful for portraits with a lot of blurred background around the photographed subject, where the corner/edge softness and vignetting could be effectively masked out. Here are some new photos taken with GR + GT-1 using GH-3. For full res photos (and some more) photos check this flick set:
http://www.flickr.com/photos/odklizec/s ... 045019106/
R0001417_sm.jpg
R0001417_sm.jpg (467.38 KiB) Viewed 7516 times

EXIF-Data
Image taken on: Fri Nov 01, 2013 10:20 am
Focus length: 18.3 mm
Shutter speed: 1/80 Sec
F-number: F/4
ISO speed rating: 800
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Not defined
Exposure bias: 0 EV
Metering mode: Center-weighted average

R0001425_sm.jpg
R0001425_sm.jpg (453.96 KiB) Viewed 7454 times

EXIF-Data
Image taken on: Fri Nov 01, 2013 1:48 pm
Focus length: 18.3 mm
Shutter speed: 1/60 Sec
F-number: F/4
ISO speed rating: 1600
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Not defined
Exposure bias: 3/10 EV
Metering mode: Center-weighted average

R0001439_sm.jpg
R0001439_sm.jpg (459.14 KiB) Viewed 7498 times

EXIF-Data
Image taken on: Fri Nov 01, 2013 2:48 pm
Focus length: 18.3 mm
Shutter speed: 1/1250 Sec
F-number: F/2.8
ISO speed rating: 100
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Not defined
Exposure bias: -3/10 EV
Metering mode: Center-weighted average

R0001446_sm.jpg
R0001446_sm.jpg (513.99 KiB) Viewed 7433 times

EXIF-Data
Image taken on: Fri Nov 01, 2013 2:50 pm
Focus length: 18.3 mm
Shutter speed: 1/2000 Sec
F-number: F/4
ISO speed rating: 400
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Not defined
Exposure bias: -3/10 EV
Metering mode: Center-weighted average

R0001493_sm.jpg
R0001493_sm.jpg (328.83 KiB) Viewed 7418 times

EXIF-Data
Image taken on: Fri Nov 01, 2013 3:30 pm
Focus length: 18.3 mm
Shutter speed: 1/2000 Sec
F-number: F/5
ISO speed rating: 400
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Not defined
Exposure bias: -3/10 EV
Metering mode: Center-weighted average

R0001551_sm.jpg
R0001551_sm.jpg (502.05 KiB) Viewed 7399 times

EXIF-Data
Image taken on: Fri Nov 01, 2013 3:59 pm
Focus length: 18.3 mm
Shutter speed: 1/500 Sec
F-number: F/4
ISO speed rating: 100
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Aperture priority
Exposure bias: -3/10 EV
Metering mode: Center-weighted average

R0001556_sm.jpg
R0001556_sm.jpg (431.32 KiB) Viewed 7390 times

EXIF-Data
Image taken on: Fri Nov 01, 2013 4:09 pm
Focus length: 18.3 mm
Shutter speed: 1/350 Sec
F-number: F/4
ISO speed rating: 100
Whitebalance: Manual
Flash: Flash did not fire, compulsory flash mode
Camera-model: GR
Exposure program: Aperture priority
Exposure bias: -3/10 EV
Metering mode: Center-weighted average
Pavel Kudrys
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Re: Ricoh GR + GT1 - useful or not?

Postby Blow-in » Mon Sep 30, 2013 6:06 pm

Pavel,

Sounds interesting (not that I have a GR - yet). Will the GT-1 fit directly on to the GH-3 or will it need a steo-up? Anyway, I think the portraits look great and I hope it does work out as I liked my GT-1 on the GRD & GRD2.

Richard
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Re: Ricoh GR + GT1 - useful or not?

Postby Rog Tallbloke » Tue Oct 01, 2013 1:37 am

My GT1 works well on my GXR A12-28. Nice to see old lenses put to new uses. Good work Pavel.
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Re: Ricoh GR + GT1 - useful or not?

Postby odklizec » Tue Oct 01, 2013 8:39 am

Richard, yes, a step-down ring (49 to 37mm) is required to be able to connect the GH-3 with GT-1. The edge sharpness is not good, but this additional blurriness may be helpful in case of portrait shots? So far, I found the GT-1 quite usable with the GR. I hope it will be the same also with the GH-3 ;)

Rog, at some point, I tried the GT-1 also with A12-28 but because of the availability of A12-50, I found that combo less than useful. When I will receive the GH-3, I may eventually do the A12-28/GR comparison (with and without the GT-1).
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Re: Ricoh GR + GT1 - useful or not?

Postby Blow-in » Tue Oct 01, 2013 1:07 pm

Pavel, thanks. I think there is quite a bit of interest in the A12 28 versus GR comparison.

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Re: Ricoh GR + GT1 - useful or not?

Postby Rog Tallbloke » Tue Oct 01, 2013 3:31 pm

Pavel, I look forward to the comparison, although I know the new GR has a superior sensor. What I did find was that the GT1 added to my A12-28 was a lot less expensive than adding the A12-50 to my collection. The macro would be nice, but I have a GX200 for that. :D

I'm not sure what you mean by "less than useful". The images I get have good corner to corner sharpness, and of course, more reach for candid portraits. It does make the combo heavy though, and for my web work, a 40mm equivalent crop is usually fine. I admit I use it a lot less now I have the A16. It takes less time to swap the lensors than it does to screw on the GT1. So if anyone want to make me an offer for it, it would be good to see it get some use on a nice new GR.
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Re: Ricoh GR + GT1 - useful or not?

Postby paulyrichard » Tue Oct 01, 2013 9:16 pm

Great to see you checking this little attachment out, Pavel. I look forward to seeing more...
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Re: Ricoh GR + GT1 - useful or not?

Postby thelps » Wed Oct 02, 2013 12:18 am

The centers in your samples look great IMO.
Its hard to tell though about corners as they are out of focus areas in your above samples.
Perhaps a test with the newspaper on the wall to tell more. Stopping down may help.
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Re: Ricoh GR + GT1 - useful or not?

Postby odklizec » Wed Oct 02, 2013 9:43 am

Thanks for your comments guys. I will do a separate GR/GXR A12-28 comparison.

I've added some landscape shots, taken with GR+GT-1, to better show you the fuzzy edges ;) A full resolution shots are available at flickr. As you can see, aside the fuzzy edges, there is no trace of black corners. But it may be that I just held the lens too close the the GR lens? The corners may look much worse when using step-down ring and GH-3?

As I see it, the GT-1 looks as a great "effect and portrait" solution for GR. If one learns how to "hide" the edge fuzziness (by correct composition), it may produce great portraits. It's definitely not a solution for landscapes ;)
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Re: Ricoh GR + GT1 - useful or not?

Postby Rog Tallbloke » Wed Oct 02, 2013 4:09 pm

Agreed, there seems to be loss of DR in the landscapes besides the edge sharpness issue. Crop weighs less too. ;)
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