Which will be wider?

**barondla** · 05-12-2021, 06:44 PM

On APS-c the Pentax 10-17 fisheye at 10 is wider than the Sigma 8-16 rectilinear. So I'm wondering how the Arsat 30 fisheye will compare to the Pentax 645 DFA 25 rectilinear?

Thanks,
barondla

**UncleVanya** · 05-12-2021, 08:06 PM

The dfa 25 shows this info:

Quote:

Field of View (Diag. / Horiz.)

645 Digital: 95.5 ° / 82.6 °
645 Film: 109 ° / 96.7 °

According to this thread the 30mm fisheye covers 116 degrees diagonal on a 645D per post #7

645D and Arsat 30mm/f3.5 rectangular fisheye - PentaxForums.com

**barondla** · 05-12-2021, 08:36 PM

Originally posted by UncleVanya

The dfa 25 shows this info:

According to this thread the 30mm fisheye covers 116 degrees diagonal on a 645D per post #7

645D and Arsat 30mm/f3.5 rectangular fisheye - PentaxForums.com

Interesting info. I hadn't seen this before. The fisheye wins. Also didn't realize some adapters were aluminum while others are brass. My Arsat came with the adapter already on. Not sure what it's made of.

Thanks,
barondla

05-12-2021, 06:44 PM	#1
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,715	Which will be wider? On APS-c the Pentax 10-17 fisheye at 10 is wider than the Sigma 8-16 rectilinear. So I'm wondering how the Arsat 30 fisheye will compare to the Pentax 645 DFA 25 rectilinear? Thanks, barondla

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Landscape Wider view, Arches Nat'l Park, Utah	RICHARD L.	Post Your Photos!	22	07-18-2021 12:56 PM
Nature Wider view, freezing Batiscan River, CANADA	RICHARD L.	Post Your Photos!	2	12-20-2020 03:23 PM
Any k mount lenses wider than 14mm?	motorhead9999	Pentax SLR Lens Discussion	11	11-09-2019 03:38 AM
RA-4 colour paper roll wider than 50.8cm or 20inch	claremont247011	Film Processing, Scanning, and Darkroom	3	08-31-2019 08:40 AM
So, which is wider? And does it matter?	azcavalier	Pentax SLR Lens Discussion	10	10-17-2007 01:27 PM

05-12-2021, 08:06 PM	#2
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,454	The dfa 25 shows this info: Quote: Field of View (Diag. / Horiz.) 645 Digital: 95.5 ° / 82.6 ° 645 Film: 109 ° / 96.7 ° According to this thread the 30mm fisheye covers 116 degrees diagonal on a 645D per post #7 645D and Arsat 30mm/f3.5 rectangular fisheye - PentaxForums.com

05-12-2021, 08:36 PM	#3
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,715 Original Poster	Originally posted by UncleVanya The dfa 25 shows this info: According to this thread the 30mm fisheye covers 116 degrees diagonal on a 645D per post #7 645D and Arsat 30mm/f3.5 rectangular fisheye - PentaxForums.com Interesting info. I hadn't seen this before. The fisheye wins. Also didn't realize some adapters were aluminum while others are brass. My Arsat came with the adapter already on. Not sure what it's made of. Thanks, barondla